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Road cycling – FTP, training and long distance

Your guide to structured road bike training and Gran Fondos

Road cycling combines endurance, strength, and tactics. This evidence-based guide shows you how to improve your FTP, train effectively, and successfully master Gran Fondos and cycling marathons.

In short, explained

  • FTP: Functional Threshold Power – the basis for training zones
  • Training: 80% Zone 2, 20% high-intensity intervals (polarized)
  • Key units: Sweet Spot, Threshold, VO2max intervals
  • Long distance: Gran Fondos require 3-4+ hours of endurance.
  • Nutrition: 60-90g of carbohydrates per hour during long events
  • Equipment: Power meter and bike fitting as the best investments

Road cycling – endurance, FTP and marathon distances

Road cycling is the pinnacle of cycling – hours of endurance on asphalt, tactical races in the peloton, and the pursuit of personal bests. Whether you're riding amateur races, completing Gran Fondos, or simply maximizing your fitness on a road bike, road cycling offers endless challenges.

The fascination lies in the combination of aerobic endurance, strength, and tactical skill. Unlike time trials, where you compete alone against the clock, road racing offers dynamic situations: using the slipstream, countering attacks, and launching a sprint in the finale. But even for non-competitive cyclists, structured training is worthwhile – it makes you faster, more efficient, and enables you to undertake longer rides.

What defines road cycling?

Road cycling encompasses various formats: peloton-based road races – tactical, with sprints and breakaway attempts. Criterium races – short circuits, many laps, technically demanding. Gran Fondos – long amateur events of 100-200+ km. Cycling marathons – similar to Gran Fondos, often with timing. For most amateur cyclists, Gran Fondos and structured training are the goal – road races require club membership and a license.

FTP – The central metric

In modern cycling, much revolves around FTP – Functional Threshold Power. This is the power output in watts that you can sustain for approximately one hour. FTP is the basis for training zones, race pacing, and progress tracking. This guide shows you how to improve your FTP and train for long distances.

Performance measurement and training zones

Modern cycling training is based on objective data – primarily power output in watts. A power meter revolutionizes training.

Why Watt?

Heart rate is sluggish and influenced by many factors (sleep, caffeine, heat, stress). Wattage is instantaneous, objective, and reproducible. You know exactly how hard you're riding—regardless of how you feel or external conditions. A power meter (on the crank, pedals, or hub) is the best investment for structured training.

Determine FTP

The classic method: 20-minute test. After a thorough warm-up: ride as hard as possible for 20 minutes. Average power output × 0.95 = FTP. Example: 20-minute average 280 W → FTP ≈ 266 W. Alternative: Ramp test – increasing power output until the test is stopped. Various formulas exist for calculating FTP.

Training zones

You define zones based on FTP. Classic 7-zone model: Zone 1 (Active Recovery): <55% FTP. Very easy. Zone 2 (Endurance): 56-75% FTP. The baseline – this is where you spend most of your time. Zone 3 (Pace): 76-90% FTP. 'Tough' – too hard for recovery, too easy for true adaptations. Zone 4 (Threshold): 91-105% FTP. At and around the threshold. Zone 5 (VO2max): 106-120% FTP. Sustainable for 3-8 minutes, very strenuous. Zone 6 (Anaerobic): 121-150% FTP. Short, intense intervals. Zone 7 (Neuromuscular): >150% FTP. Sprints, a few seconds.

W/kg – Power in ratio

Absolute watts are important, but for climbs, W/kg – watts per kilogram of body weight – is what counts. A 70 kg rider with 280 W FTP has 4.0 W/kg. An 80 kg rider needs 320 W for the same ratio. For flat terrain, absolute power output matters. For climbs, W/kg is what counts.

Training philosophy – Polarized vs. Sweet Spot

There are various approaches to endurance training. Two dominate: polarized training and sweet spot training.

Polarized training

The classic method of endurance athletes. Principle: 80% of training very easy (Zone 1-2), 20% very hard (Zone 4-5+). 'Zone 3' (tempo) is largely avoided – too hard for recovery, too easy for maximum adaptation. Advantages: Minimizes the risk of overtraining. Allows for high overall volume. The hard sessions can be truly intense (since you're recovered). Proven among professional cyclists and endurance athletes. Disadvantage: Requires a lot of time – the long Zone 2 sessions can last for hours.

Sweet Spot Training

The sweet spot lies at 88-93% FTP – hard enough for adaptation, sustainable enough for longer intervals. The principle: More time in zones 3-4 (sweet spot to threshold). Shorter sessions, but more intense. Advantages: More time-efficient – ​​better value for money per training hour. Good for amateurs with limited time. Rapid FTP improvements are possible. Disadvantage: Higher risk of fatigue. Less room for hard sessions. Potential for stagnation in the long run.

Which is better?

For most recreational cyclists: a mix of both. Base endurance in Zone 2 is essential – even if you have limited time. For athletes with time constraints, the Sweet Spot is effective. For Gran Fondos and long-distance races, you need the ability to ride in Zone 2 for hours. My suggestion: 70-80% Zone 1-2. 20-30% Zone 4+ (including Sweet Spot, Threshold, VO2max). Use Zone 3 sparingly.

Key units for road cycling

Effective training consists of different types of units – each has its purpose.

Zone 2 endurance

The foundation. Long, easy rides in Zone 2 (56-75% FTP). Duration: 90 minutes to 4+ hours. Effects: Aerobic base, fat burning, mitochondrial development. Frequency: 2-4 times per week (including parts of other sessions).

Sweet Spot Intervals

Intervals at 88-93% FTP. Example: 2 x 20 min @ 90% FTP (5 min rest). Effect: FTP development, time-efficient. Frequency: 1-2 times per week.

Threshold intervals

Intervals at 95-105% FTP. Example: 4 x 10 min @ 100% FTP (4 min rest). Effect: Direct FTP work, lactate tolerance. Frequency: 1x per week (intense!).

VO2max intervals

Short, intense intervals at 106-120% FTP. Examples: 5 x 5 min @ 110% FTP (5 min rest). 6 x 4 min @ 115% FTP (4 min rest). 8 x 3 min @ 120% FTP (3 min rest). Effect: Increased VO2max, improved performance at the limit. Frequency: 1x per week (very strenuous).

Above-below intervals

Alternating between just above and just below the threshold. Example: 3x (4 min @ 105% FTP + 4 min @ 90% FTP), without a break between the changes. Effect: Lactate management, race simulation. Frequency: Occasionally, during race preparation.

Sprints and neuromuscular work

Short, maximum efforts (10-30 seconds). Example: 6 x 15-second max sprints (3-minute rest). Effect: Maximum performance, sprinting ability. Frequency: Once a week or as the end of other workouts.

Training plan – 12 weeks FTP building

This plan systematically builds up your FTP – suitable for amateur cyclists with 8-12 hours per week.

Phase 1: Foundation (Weeks 1-4)

Focus: Aerobic base, getting used to volume. Weeks 1-2: 8-9 hours/week. 3x Zone 2 rides (60-120 min). 1x Sweet Spot (2x15 min). 1x Endurance with strides (6x20 sec at the end). Weeks 3-4: 9-10 hours/week. 3x Zone 2 rides (90-150 min). 1x Sweet Spot (2x20 min). 1x Easy Threshold introduction (3x8 min).

Phase 2: Development (Weeks 5-8)

Focus: Intensify FTP work. Weeks 5-6: 10-11 hours/week. 2-3 Zone 2 rides. 1 Sweet Spot (3 x 15 mins). 1 Threshold (4 x 10 mins). 1 long ride (3+ hours). Weeks 7-8: 11-12 hours/week. 2 Zone 2 rides. 1 Sweet Spot or Over/Under FTP. 1 Threshold (4 x 12 mins). 1 VO2max introduction (5 x 4 mins). 1 long ride.

Phase 3: Specific (Weeks 9-11)

Focus: Peak fitness, race preparation. Weeks 9-10: 10-11 hours/week. 2x Zone 2 rides. 1x Threshold or Over/Under. 1x VO2max (6x4 min). 1x long ride with race sections. Week 11: 9 hours/week. Slightly reduced volume. Maintain quality sessions. More recovery.

Phase 4: Taper (Week 12)

Focus: Getting fresh. 6-7 hours/week. Only Zone 2 and short, snappy openers. Plenty of rest before the target event.

Example week (Phase 2)

Mon: Rest. Tue: Sweet Spot 75 min (2x20 min @ 90% FTP). Wed: Zone 2 90 min. Thu: VO2max 70 min (5x4 min @ 115% FTP). Fri: Rest or very easy 45 min. Sat: Long ride 3-4 hrs (Zone 2, with some threshold sections). Sun: Zone 2 90 min (active recovery).

Gran Fondo and cycling marathon – preparing for long distances

Gran Fondos and cycling marathons are the long-distance events for amateur cyclists – 100 to 200+ kilometers, often with significant elevation gains.

What can you expect?

Typical distances: Middle distance: 80-120 km. Long distance: 120-160 km. Extreme: 200+ km. Duration: 3-8+ hours, depending on distance, terrain, and pace. Elevation gain: From flat to 4,000+ meters for alpine events.

Specific requirements

Aerobic endurance: You need to be able to ride for hours in Zone 2-3. Nutrition in the saddle: For 4+ hour rides, eating while riding is essential. Pacing: Riding too hard too early will be punished. Climbing ability: In events with elevation gain, uphill efficiency is crucial.

Training for long distance

Long rides are essential. A 3-4 hour ride per week. Some rides up to 5-6 hours during peak training. These long sessions train: endurance and fat burning; nutrition while riding; mental stamina; and saddle comfort (seats, neck, hands).

Nutrition during the event

Rule of thumb: 60-90g of carbohydrates per hour. That's 2-3 gels or bars per hour. Plus a sports drink. For very long events: Real food at aid stations. Practice: Test the same diet during training!

Pacing strategy

Start: Controlled, Zone 2-3. Don't get carried away by the adrenaline. Flat sections: Steady Zone 2-3. In the peloton: Use the slipstream = less effort. Climbs: Go by feel, but don't overdo it – you still have a long way to go. Second half: This is where it becomes clear who paced correctly.

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Aerodynamics and efficiency

At higher speeds, air resistance is the biggest enemy. Aerodynamics is not only relevant for time trialists.

Why aerodynamics?

At 30 km/h, roughly 70-80% of your energy is lost to air resistance. At 40 km/h, it's even more. Small improvements in aerodynamics can save enormous amounts of watts – or make you faster at the same power output.

Position on the bike

The biggest improvement: your position. Hands on the drops instead of the tops = 5-15% less drag. Elbows closer together = better aerodynamics. Head down (looking through your eyebrows) = less forehead area. Back flat = more aerodynamic than upright. Professional bike fitting optimizes your position for aerodynamics and comfort.

Clothing and equipment

Tight-fitting clothing: Flapping jerseys cost watts. Aero helmet: Relevant for long time trials or triathlons. Gloves, shoe covers: Small gains. Deep rims: More aerodynamic, but more susceptible to crosswinds. Integrated cockpit: Hidden cables, smoother front.

Group riding and drafting

Riding in the peloton saves 20-40% energy compared to riding solo. Drafting is the most effective aerodynamic measure. Positioning: Stay behind other riders. Not too far back – the peloton's accordion formation drains energy. Take the lead, then drop back and recover.

What's worth it?

For amateur cyclists: Optimize your position (free). Wear close-fitting clothing (inexpensive). Get a bike fitting (medium investment). Deep-section rims and aero equipment are nice to have, but the return on investment is lower than with the basics.

Mountain biking – climbing for road cyclists

Mountains are the biggest challenge in road cycling – this is where it becomes clear who is really fit.

Why mountains are different

Uphill, the primary factor is W/kg (watts per kilogram). Aerodynamics plays almost no role at low speeds. Your weight becomes the crucial factor – every kilogram has to be carried uphill. Pacing is critical – starting too fast leads to a collapse.

Training for climbing

Hill repetitions: Find a climb (5-15 min.) and ride intervals. Example: 4 x 8 min. on the climb @ 95% FTP (descent as a recovery). Long climbs: If available, ride 20-40 min. climbs regularly. Simulation: You can simulate hill profiles on your smart trainer. Improve FTP/kg: Either increase your FTP or reduce your weight (or both).

Pacing on the mountain

Start: Controlled! The first 2-3 minutes slower than your target pace. Then: Steady state at threshold (95-100% FTP) or slightly below. Heart rate: Heart rate rises more slowly on climbs – use wattage or feel as a guide. Steeper sections: Don't overdo it, maintain a consistent power output. Flatter sections: Maintain pace, don't let up.

Technology on the mountain

Sitting vs. Standing: Sitting is more efficient, standing provides short breaks and activates different muscles. Alternate. Cadence: 70-90 rpm is typical uphill. Too low a gear = more muscle fatigue. Upper body: Keep still, don't sway with the bike. Breathing: Rhythmic, deep.

Weight management

With the same FTP, every kilogram less makes you faster uphill. However, weight loss at the expense of performance is counterproductive. The goal is to reduce body fat while maintaining muscle mass. For recreational cyclists, 2-4 W/kg is typical. 4+ W/kg is very good.

Regeneration and periodization

Hard training alone won't make you faster – adaptation happens during recovery.

The principle of supercompensation

Training = Stress → Fatigue → Recovery → Adaptation. If you train hard again too soon, fatigue accumulates. If you wait too long, you lose the training effect. The timing of the recovery phase is crucial.

Regeneration measures

Sleep: The most important recovery measure. 7-9 hours, regularly. Nutrition: After hard sessions: Carbohydrates + protein within 30-60 minutes. Sufficient total calories – insufficient calorie intake prevents adaptation. Active recovery: Very easy cycling (Zone 1) can accelerate recovery. Other measures: Massage, foam rolling, compression, cold baths – supportive, but sleep and nutrition are more important.

Periodization

Training should be organized in cycles: Microcycle (week): Alternating between hard and light days. Mesocycle (3-6 weeks): Building up with progressive increases, then a recovery week. Macrocycle (season): Base phase → Build-up phase → Competition phase → Off-season.

Recreation weeks

Schedule a recovery week every 3-4 weeks. Volume: 50-60% of the previous week. Intensity: Only easy sessions or very short, intense openers. Purpose: To allow adaptation and reduce fatigue.

Recognizing overtraining

Warning signs: Persistent fatigue, declining performance despite training. Elevated resting heart rate, poor sleep. Loss of motivation, irritability. Frequent infections. If you experience these symptoms: drastically reduce training volume, get more sleep, and possibly take a complete break for a few days.

Equipment and bike setup

The right equipment makes a difference – but legs are more important than equipment.

The racing bike

Frame: Carbon is light and stiff, but aluminum is perfectly adequate for most. Material: Carbon, aluminum, steel (classic). Geometry: Endurance (more comfortable) vs. Race (more aggressive). Fit: The most important thing – a poorly fitting expensive bike is worth less than a well-fitting, inexpensive one.

Components

Drivetrain: Shimano, SRAM, Campagnolo – all work superbly. Electronic vs. mechanical: Electronic is more precise and requires less maintenance, but is more expensive. Gearing: For Gran Fondos with hills, a compact crankset (50/34) and a large cassette (11-32 or larger) are recommended.

wheels

After the frame, the most important upgrade factor. Aerodynamic wheels (40-60mm deep) offer real time savings. Lightweight wheels help on climbs. For recreational cyclists: Good aluminum wheels often offer the best value for money.

Bike fitting

A professional bike fitting is invaluable: It optimizes your position for performance and comfort, prevents overuse injuries, and makes you faster and more pain-free on long rides. Cost: €100-300 – well worth it.

Additional equipment

Helmet: Mandatory and for safety. Shoes: Stiff soles for efficient power transfer. Clipless pedals: More efficient than platform pedals. Computer: GPS and power meter – Garmin, Wahoo, etc. Clothing: Bib shorts are more comfortable than regular cycling shorts.

Budget priorities

If the budget is limited: Bike fitting (high return on investment). Good saddle (comfort = more training time). Power meter (better training). Then: Wheels, components, frame.

Häufig gestellte Fragen

FTP (Functional Threshold Power) is the power output in watts that you can sustain for approximately one hour. It forms the basis for training zones and race pacing. All interval intensities are defined as a percentage of FTP.

For recreational cyclists: 4-6 times per week, including 2-3 high-intensity sessions and 2-3 sessions in Zone 2. Total volume: 8-15 hours depending on goals and available time.

Not essential, but highly recommended for structured training. A power meter allows for precise zone-based training and objective progress measurement. The investment is worthwhile for serious amateur cyclists.

It's very individual. For recreational cyclists: 200-280 W or 2.5-4.0 W/kg is typical. 4.0+ W/kg is very good for amateurs. Professionals average 5.5-6.5 W/kg. More important than absolute numbers is your personal development.

From a solid foundation: 12-16 weeks. For your first long Gran Fondo (150+ km), you should already be able to regularly ride for 3-4 hours.

60-90g of carbohydrates per hour – that's 2-3 gels or bars plus a sports drink. For very long events (5+ hours), also consume solid food at aid stations. Test it out in training!

Two levers: Increase FTP and optimize weight. Training: Hill repetitions, threshold intervals, long climbs. An improved watt-to-weight ratio makes you faster uphill.

A training approach with 80% easy intensity (Zone 1-2) and 20% hard intensity (Zone 4+). The middle Zone 3 is largely avoided. Proven effective with professional endurance athletes, but requires a significant training time commitment.

Every 3-4 weeks. During the recovery week: reduce volume to 50-60%, only easy sessions. This allows for adaptation and prevents overtraining.

Yes! A professional bike fitting optimizes your position for performance, aerodynamics, and comfort. It prevents overuse injuries and makes you more efficient on long distances. Cost: €100-300 – one of the best investments you can make.

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