Aquabike Calculator
Estimates aquabike finish time and swim and bike splits from target pace and speed.
Templates are illustrative distances you can edit, not event regulations.
Result
Enter a pace or speed for each leg to see your finish time and splits.
Constant average pace for each leg: no drafting, gradient or fatigue model. Estimate only — real results depend on course, weather, terrain, fatigue, transitions, equipment, nutrition and event rules. Not medical or coaching advice.
How the method works
Each leg is distance ÷ pace basis × pace (or distance ÷ speed); the finish is the sum. Fixed example values for illustration — not your result.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Pick an event template (Sprint, Standard or Long), or tick Edit distances to change them.
- Choose Metric or Imperial, then enter your swim pace (min:sec per 100 m or 100 yd), bike speed (km/h or mph) and, if you like, the T1 transition (blank uses the template's default).
- Read the total, the splits, cumulative times and — with a start time — the clock at each point. Use Target Finish to solve the swim pace or bike speed a goal needs, and Print race card for a one-page plan.
How it works
An aquabike is swim → bike (no run). Swim time = distance ÷ pace basis × pace; bike time = distance ÷ speed; the transition is added once. Paces are stored in metric base units, so switching to imperial never changes the result.
Target Finish fixes the other legs and divides the time left by the solved leg's distance; if the fixed legs already use up the target, it says the target is impossible instead of returning a negative speed.
Blank paces are missing, not zero, and seconds must be below 60. The model is constant average pace — no drafting, gradient or fatigue.
Worked example
Sprint aquabike. 750 m swim @ 1:50/100 m (13:45) + T1 3:00 + 20 km bike @ 30 km/h (40:00) = 56:45. A 55:00 target leaves 38:15 for the bike: 31.37 km/h.
Tips
- Times are estimates only — not medical or coaching advice. Always train safely and follow event rules.
- Distances are editable: choose “Custom…” to enter your own course lengths.
Frequently asked questions
What are typical aquabike distances?
They mirror triathlon swim+bike legs — e.g. sprint 0.75 km / 20 km, standard 1.5 km / 40 km, long 1.9 km / 90 km. Distances are editable.
How accurate are these times?
They're estimates. Real race times depend on terrain, weather, elevation, fatigue, transitions, nutrition, equipment, drafting and water conditions. Use them for planning and pacing, not as a guarantee.
Do my inputs get uploaded?
No. Everything is calculated in your browser — nothing is sent to a server or stored.
What is Target Finish mode?
Enter a goal finish time and the paces/speeds for the other legs, then pick the leg to ‘solve for’. The calculator works out the pace or speed you'd need on that leg to hit your goal.
Related tools
- Triathlon Finish Time Calculator
- Duathlon Calculator
- Aquathlon Calculator
- Required Bike Speed Calculator
- Critical Swim Speed Calculator
- Custom Multisport Calculator
Explore more in Health, Fitness, Nutrition & Body.
Cite this tool
Zerdly. (2026). Aquabike Calculator. Retrieved from https://www.zerdly.com/tools/aquabike-calculator/
Tip: Enter any known values to calculate the remaining results.
Designed to run locally in your browser. Tool inputs are not intentionally stored by Zerdly unless stated otherwise.