CoachingAnswer

HOW DO YOU IMPROVE CYCLING ENDURANCE?

By Anthony WalshRoadman CyclingUpdated 10 July 2026

ANSWER

Cycling endurance improves through three mechanisms: progressive long-ride duration, consistent zone 2 volume, and practised on-bike fuelling. Extend your longest weekly ride by 10-15% each week until you can comfortably ride for 75% of your target event duration. Accumulate 4-8 hours of total weekly riding time with at least 70% in zone 2. Practise eating 60-80g of carbohydrate per hour on every ride over 90 minutes. Endurance is as much a fuelling skill as a fitness quality — most riders bonk because they eat too little, not because they trained too little.

KEY TAKEAWAYS

Extend your long ride by 10-15% per week to build ride duration safely.
70% of weekly volume should be zone 2 to build aerobic endurance.
On-bike fuelling at 60-80g carbohydrate per hour prevents late-ride collapse.
Aerobic efficiency — doing more work at a lower heart rate — is the marker of endurance.
Endurance improves over months, not weeks; consistency is more important than any single ride.

WHO THIS IS FOR

IS THIS YOU?

The rider preparing for a long event

You have a sportive or gran fondo coming up and you cannot currently ride the full distance comfortably.

The rider who fades after two hours

Your first 90 minutes are fine but your power and pace collapse after that.

THE ROADMAN VIEW

Endurance is the ability to hold a pace for a long time without falling apart. Most riders think the answer is more miles, and it partly is — but it is also about eating properly on the bike and not starting at an intensity you cannot sustain. The rider who fades at hour three is almost always under-fuelled or started too hard, not undertrained.

The practical plan is simple: make your long ride 15 minutes longer each week, eat on every ride over 90 minutes, and keep the intensity conversational. After 8-10 weeks of this, you will be able to ride distances that would have destroyed you at week one. It is not complicated; it is just patient.

EXPERT EVIDENCE

WHAT THE EXPERTS SAY

Dr Asker JeukendrupSports nutrition researcher, multiple carbohydrate transport pioneer
Endurance performance is limited as much by fuel availability as by fitness. Athletes who consume 60-90g of carbohydrate per hour during rides over 90 minutes consistently outperform those who rely on water alone, even when the underlying fitness is identical.
Dr Iñigo San MillanMitochondrial physiologist, UAE Team Emirates
Endurance at the cellular level is about fat oxidation capacity and mitochondrial function. Zone 2 training specifically targets these systems, enabling riders to spare glycogen and maintain power output deep into long efforts.

PRACTICAL APPLICATION

DO THIS WEEK

Build the long ride progressively
Start at a comfortable distance and add 10-15% each week. If your longest ride is 60km, add 6-9km per week. Every fourth week, reduce by 30-40% as a recovery week. Target: reach 75% of your goal event distance by three weeks before the event.
Practise fuelling on every long ride
From week one, eat 60g of carbohydrate per hour on any ride over 90 minutes. Use gels, bars, rice cakes, or whatever you tolerate. The goal is to train your gut alongside your legs.
Add midweek zone 2 volume
One or two easy 60-90 minute rides during the week accumulate aerobic volume without heavy fatigue. These rides should feel almost too easy. They build the mitochondrial base that supports long-ride endurance.
Monitor heart rate drift as a progress marker
On your long rides, note your heart rate at a consistent power in the first hour and the third hour. As your endurance improves, the drift between them will shrink — a sign your aerobic system is more efficient.

COMMON MISTAKES

WHAT CYCLISTS GET WRONG

MISTAKEStarting the long ride too fast.
FIXThe first 30 minutes should feel easy. If you go hard early, you deplete glycogen faster and will fade later. Start 10% below your target pace and settle in.
MISTAKENot eating on rides under three hours because they seem short.
FIXAny ride over 90 minutes benefits from fuelling. Waiting until you feel hungry means you are already behind on energy. Start eating at the 45-minute mark.
MISTAKEIncreasing long ride distance too quickly.
FIXMore than 15% increase per week raises injury and overtraining risk. Be patient — 10-15% per week with a recovery week every fourth week is sustainable long-term progress.

FAQ

FREQUENTLY ASKED QUESTIONS

How long does it take to build endurance for a 100-mile ride?

12-16 weeks of progressive training is typical for a rider who can currently ride 40-50 miles. Build the long ride by 10-15% per week and you will reach 75-80 miles by week 12, which is sufficient preparation.

Does indoor training build endurance?

Yes, though long indoor sessions are mentally demanding. A 2-hour indoor ride at zone 2 provides similar aerobic stimulus to a 2.5-3 hour outdoor ride because there is no coasting. Break it into blocks with cadence or slight power variations.

Is endurance the same as aerobic fitness?

Related but not identical. Aerobic fitness is your engine capacity (VO2max, threshold). Endurance is how long you can sustain a fraction of that capacity. A rider can have high VO2max but poor endurance if they have not trained duration and fuelling.

Can strength training improve cycling endurance?

Indirectly, yes. Stronger muscles fatigue less per pedal stroke, which delays the point at which technique breaks down on long rides. One to two strength sessions per week focusing on single-leg and core work supports endurance.