Required Bike Speed Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter details
Distance(km)
Target time
::
Result
Fill in the fields to see your result.
Estimate only — real results depend on terrain, weather, fatigue, conditions and individual fitness. Not medical or coaching advice.
How to use this calculator
- Enter the distance (km) and your target time.
- Read the average speed you need.
How it works
Required speed = distance ÷ (target time in hours).
Worked example
40 km in 1:10:00. needs about 34.3 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
Does it account for hills/wind?
No — it's the flat average. Real efforts vary with terrain and wind.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.