Swimming and cycling – the first two disciplines of a triathlon, without the final run. Aquabike is the ideal solution for anyone who loves triathlons but can't or doesn't want to run.

The format is simple: You swim, you cycle, you cross the finish line. No running, no knee problems during a marathon, no walking in the final kilometers. Instead: The fascination of open water swimming combined with the freedom of cycling.

Who is Aquabike for?

The reasons for aquabiking are varied and legitimate. Injuries that make running impossible – damaged knees, Achilles tendon problems, chronic back pain. Some people simply aren't suited to running, while excelling in the water and on the bike. Others want the triathlon experience without the running strain. And some use aquabiking as an alternative while recovering from a running injury.

The distances

Aquabike events are based on triathlon distances: Sprint: 750m swim + 20km bike. Olympic: 1.5km swim + 40km bike. Middle distance (70.3): 1.9km swim + 90km bike. Long distance (Ironman): 3.8km swim + 180km bike.

The events are often held in parallel with regular triathlons – you start in the water with the triathlon field and ride the same cycling route, but finish after the cycling.

This guide shows you how to prepare for aquabike competitions – from the sprint distance to the full long distance.

Aquabike is more than 'triathlon without running' – the format has its own characteristics.

No run = different tactics

In a triathlon, you need to conserve energy on the bike for the run. In aquabike racing, you can (theoretically) give it your all on the bike. This changes the race dynamics: the cycling can be more intense. Pacing is less critical – but still important. The danger: overpacing on the bike and a collapse in the final kilometers.

Swimming remains the same

The swimming portion is no different from the triathlon. Same distances, same open water, same challenges. Navigation, mass swim, wetsuit – all identical.

The transition area

Only one transition zone: T1 (swim → bike). The transition is identical to a triathlon – wetsuit off, helmet on, grab your bike. There is no T2 – you ride directly to the finish line.

The racing experience

You start with the triathlon field (often in the same wave). You ride the same bike course. But while the triathletes are putting on their running shoes in T2, you're already at the finish line. This can feel strange – the others are still struggling while you've finished. But that's also the beauty of it: no suffering in the marathon, instead an early finish and the chance to watch.

recognition

Aquabiking is an official discipline at many event organizers (e.g., Ironman). You receive a ranking, a medal, and an official time. It's not a 'half-measure' but a sport in its own right.

Swimming in an aquabike is identical to a triathlon – the same distances, the same requirements.

The distances

Sprint: 750m – the entry-level distance. Olympic: 1.5 km – requires solid swimming endurance. Middle distance: 1.9 km – technical efficiency becomes more important. Long distance: 3.8 km – serious swim preparation is necessary.

Training structure

Frequency: 2-4 times per week (depending on target distance). Distance per session: 2,000-4,000m. Mix: Technique, intervals, endurance, open water.

Technology priorities

Body position in the water: Hips high, streamlined. Arm stroke: Efficient catch, powerful pull. Leg kick: Less critical in aquabiking than in triathlon (no need to conserve leg energy for running), but still efficient. Breathing: Relaxed, bilateral if possible. Navigation: Sight regularly – essential in open water.

Example units

Technique (2,500m): 400m warm-up. 6x100m technique drills. 4x200m focusing on body position. 6x50m fast. 300m cool-down. Endurance (3,000m): 500m warm-up. 2,000m continuous (race pace or slightly below). 500m cool-down. Intervals (3,000m): 400m warm-up. 10x150m with 15-second rest (race pace). 300m cool-down.

Open water training

At least weekly during the season. Practice: orientation, mass swimming, wetsuit handling. Longer distances continuously (depending on target distance).

The advantage of the aquabike

Since you don't have to run, you can theoretically invest more energy in swimming. But: Don't overdo it – you'll still need energy for cycling.

In aquabike, cycling is not only the longest but also the final discipline. This is where the race is decided.

The difference to triathlon

In a triathlon, you save energy on the bike for the run. In aquabiking, the cycling leg is over – you can invest more. This means a slightly higher intensity is possible. You can go all out for the last few kilometers. But: pacing also applies to aquabiking. Starting too fast means a slump later.

Training structure

Frequency: 3-4 times per week. Weekly volume: 100-300 km (depending on target distance). Types: Endurance (easy, Zone 2). Tempo (threshold work). Intervals (VO2max, short bursts of hard work). Long ride (race simulation).

Example units

Endurance (90 min): Zone 2, constant pace. Cadence 85-95 rpm. Tempo (75 min): 15 min warm-up. 3 x 12 min at race pace (Zone 4), 5 min easy. 15 min cool-down. Intervals (60 min): 15 min warm-up. 8 x 3 min hard (Zone 5), 2 min easy. 15 min cool-down. Long ride (3+ hrs): Moderate intensity. Test nutrition. The last 30-60 min at race pace.

Pacing strategy

Pacing is important even without running: Sprint (20 km): Relatively hard is possible – but not all in the first 5 km. Olympic (40 km): Steady-fast pace, Zone 4. Middle distance (90 km): Controlled, Zone 3-4. Push hard in the last 10-15 km. Long distance (180 km): Start conservatively, Zone 2-3. The last 30 km can be faster.

aerodynamics

Important for every distance – without running, you have more energy for the aero position. Triathlon/time trial bike or aero bars. Aero helmet. Body position: low, compact.

In aquabiking, too, the transition from swimming to cycling is a specific skill that needs to be trained.

Why combined training?

The transition from water to bike requires: rapid reorientation after swimming, a change from a horizontal to a vertical position, and activation of the leg muscles for cycling. The first few minutes on the bike after swimming feel different than after a fresh start.

Coupling variants

Standard brick workout: 1,000-2,000m swim, then immediately 45-75 minutes of cycling. The classic swim-to-bike transition. Practice the transition: wetsuit off, helmet on, go. Short brick workout: 500m swim + 20 minutes cycling, repeat several times. More intensive transition training. Race simulation: Full swim distance + full bike distance (or close to it). Rare, but important for longer distances.

frequency

Once a week is ideal. For short distances, every two weeks is sufficient. Before the competition: 1-2 full simulations.

Training the transition

The transition from swimming to cycling has its own challenges: Dizziness: After swimming (especially in a horizontal position), you may experience brief dizziness. Stand up slowly and get your bearings. Wetsuit removal: Practice removing your wetsuit under time pressure – unzip, stick your arms out, run to your bike, continuing to peel off the wetsuit as you go. Helmet first: Don't forget – put your helmet on before you touch your bike (disqualification!). First few minutes on the bike: Your legs need 2-5 minutes to get into a cycling rhythm. Don't overdo it!

Tips

Practice the entire transition: out of the water → find the transition area → wetsuit off → helmet on → bike → climb line. The more automated, the better.

Without running, the nutrition strategy in aquabike is somewhat simpler – but still crucial for longer distances.

Before the competition

Identical to a triathlon: a carbohydrate-rich diet in the days leading up to the race. In the morning: eat breakfast 2-4 hours before the start. 100-150g of easily digestible carbohydrates. Shortly before the start: optionally a small gel or sports drink.

During the competition – swimming

No food or drink. For long distances: gel pack in neoprene for T1.

During the competition – cycling

Here's the difference to a triathlon: You don't need to save up for the run. Sprint (20 km, 30-45 min): Usually no nutrition needed. Maybe water. Olympic (40 km, 60-80 min): Sports drink and/or 1 gel. 30-60g carbohydrates. Middle distance (90 km, 2.5-3.5 hrs): 60-90g carbohydrates per hour. Sports drink + gels + possibly a bar. Long distance (180 km, 5-7 hrs): 60-90g carbohydrates per hour. Full triathlon nutrition strategy.

The advantage of the aquabike

Without running, your stomach is less stressed. You can eat more and a wider variety of foods while cycling. The risk of stomach problems during a run is eliminated. Nevertheless: Test what you can tolerate during training!

After the competition

Finish earlier = eat earlier! Consume carbohydrates and protein within 30-60 minutes. Rehydrate. Enjoy while the triathletes are still running.

The equipment for aquabiking is identical to that for triathlon – only without running shoes.

To swim

Wetsuit: Standard for open water swimming. Provides buoyancy and keeps you warm. Investment: 200-500 euros. Swimming goggles: Reliable, fog-free. Bring a backup pair! Swim cap: Often provided by the organizer. Bring your own as a backup.

Ride a bike

The bike: The most important investment. Road bike or triathlon/time trial bike. In aquabiking, an aerodynamic setup can be even more crucial than in triathlon – you don't have the running fatigue caused by the aero position. Helmet: Mandatory! An aero helmet saves time. Cycling shoes + clipless pedals: Recommended for efficiency. Bike computer: GPS, speed, ideally power meter.

Aquabike-specific

Tri-suit: A one-piece suit that you can wear from the swim to the bike. Saves transition time and is comfortable. Or: Separate swim/bike clothing (slower transitions). Race number belt: For your race number on the bike.

In the transition area

T1 only (swim → bike): Towel (for orientation, drying feet). Helmet (open, easily accessible). Cycling shoes (if not attached to the bike). Sunglasses. Nutrition for the bike (gels, bars in pockets).

Equipment advantage

In aquabiking, you can prioritize your equipment: Invest in the bike – it'll save you half the distance (and even more in terms of time). Aerodynamics are particularly worthwhile. You don't need to invest in running shoes.

This plan prepares you for an aquabike competition over Olympic distance (1.5 km swim + 40 km bike).

Requirements

You can swim 1,000 meters continuously. You can cycle for 60 minutes. You have a basic level of fitness in both disciplines.

Weekly effort

Weeks 1-6: 6-8 hours. Weeks 7-10: 8-10 hours. Weeks 11-12: Taper, 5-7 hours.

Phase 1: Foundation (Weeks 1-4)

Focus: Building a foundation. Per week: 3x swimming (2,000-2,500m). 3x cycling (45-75 min). 1x brick workout (swimming + cycling). Intensity: Mostly Zone 2, focus on technique.

Phase 2: Development (Weeks 5-9)

Focus: Increase volume and intensity. Per week: 3x swimming (2,500-3,500m, including intervals). 3x cycling (60-90 min., including tempo training). 1x brick workout (longer, more race-like). Key sessions: Long swim (2,500+ m continuously). Long bike ride (90-120 min.). Open water swimming.

Phase 3: Specific (Week 10)

Focus: Race simulation. Key unit: 1.5 km swim + 40 km bike in one training session. Practice transitions. Pace close to race pace.

Phase 4: Taper (Weeks 11-12)

Focus: Getting fresh. Volume: 50-60% of peak week. Intensity: Short, intense sessions. Last week: Only easy sessions, short increases in intensity.

Example week (Phase 2)

Mon: Swim 3,000m (intervals). Tue: Bike 75 min (incl. speed sections). Wed: Swim 2,500m (technique) + Bike 30 min (easy). Thu: Rest. Fri: Swim 2,000m (easy). Sat: Brick: Swim 1,500m + Bike 60 min. Sun: Bike 100 min (endurance).

Tactics count in aquabike racing – here's your race plan.

Before the start

Set up your transition area: Bike to your assigned spot. Helmet open on the handlebars. Cycling shoes ready (if not on the bike). Nutrition for the bike leg prepared. Memorize the location – you'll be coming out of the water wet and possibly disoriented.

Swimming

Identical to a triathlon: Choose your starting position according to your ability. Controlled start, find your own pace. Orientation: Sight the course regularly. Don't overpace – you need energy for the bike. Goal: Get out of the water efficiently.

T1 (Swimming → Cycling)

Run out of the water to the transition area. Take off your wetsuit (practice!). Put on your helmet (mandatory before you touch your bike). Put on your cycling shoes (if they're not on your bike). Grab your bike and head to the mounting line. Mount your bike and go. Goal: Under 3 minutes (under 2 for ambitious athletes).

Cycling

The first 5-10 km: Find your pace, get your legs into a rhythm. Pacing: Depending on the distance (see training section). Principle: Maintain a steady, fast pace; don't push too hard too early. Nutrition: For longer distances (40+ km), eat and drink regularly from km 15-20 onwards. The last 5-10 km: This is where you can invest – but only if you still have reserves. Without the run, you can give more than in a triathlon!

The difference to triathlon

In a triathlon, you save energy on the bike. In aquabiking, your effort ends after the bike leg – the last few kilometers can be faster. But: Aquabiking also requires pacing. If you give it your all at kilometer 5 of 40, you'll have nothing left at kilometer 35.

At the finish line

You're ready while the triathletes are still running. Enjoy it! Shower earlier, eat earlier, soak up the atmosphere earlier.

Aquabike is not just a sport in its own right – it can also be a bridge and an alternative.

Aquabike in case of injury

One of the most common reasons for aquabiking: running injuries. Knee problems, Achilles tendon injuries, stress fractures – anything that makes running impossible. Aquabiking makes it possible to: continue participating in triathlon events; maintain and improve swimming and cycling fitness; experience competition without the strain of running; and after recovery: return to full triathlon training with improved swimming and cycling form.

Aquabike as a permanent choice

Some people choose aquabiking permanently: chronic running problems. Personal preference – running isn't for everyone. Focus on swimming and cycling. That's perfectly legitimate – aquabiking is a fully-fledged sport.

Aquabike as triathlon training

Some triathletes use aquabiking strategically: as an off-season competition (when running is on hold), a fitness check for swimming and cycling, and an extra competition without the strain of a marathon.

From aquabike to triathlon

Once your injury heals or you get the urge to run again: Your swimming and cycling fitness is excellent. Running training needs to be built up gradually. Combining cycling and running is new – your body needs to adapt. The transition is possible and can be very successful.

The Aquabike Community

Aquabike has its own, albeit smaller, community. It's often made up of athletes with similar stories – injuries, surgeries, the desire to continue. The bond is strong. And at every triathlon event, there are aquabikers who share the atmosphere, even if their paths have taken different routes.