How this instrument works
Average speed is distance divided by time — the total ground covered spread evenly across the total time taken. It's a whole-ride average, so it doesn't capture how speed varied moment to moment: a ride with a fast flat section and a slow climb, and a perfectly even effort over the same distance and time, both report an identical average speed.
This instrument divides the distance you enter, in miles, by the time taken, in hours, to give miles per hour directly. It's exactly what a cyclocomputer or GPS device is calculating when it displays 'avg speed' at the end of a ride, though those devices track distance and elapsed time continuously rather than needing the two figures entered by hand.
For scale, a relaxed recreational pace often sits in the 10-14 mph range, a fit club rider might average 16-20 mph on rolling terrain, and elite time trial specialists can hold speeds above 30 mph for an hour. The outer edge of what's achievable on two wheels is the UCI Hour Record — Filippo Ganna's 56.792 km (about 35.3 mph) covered in exactly sixty minutes on a velodrome, under conditions no road ride can match.
- Enter Distance (miles) — the total distance covered for the ride or segment being measured.
- Enter Time (hours) — the time taken, in decimal hours; 90 minutes is entered as 1.5, not 90.
- Read Average speed (mph) — distance divided by time, the same figure a cyclocomputer's 'avg speed' readout reports.
- Use elapsed time (including stops) for an honest whole-ride average, or moving time alone if comparing pure riding effort between rides.
- Time must be greater than zero, or the instrument will prompt for a valid value.
Worked example — 20 miles in exactly an hour
Enter 20 into Distance (miles) and 1 into Time (hours) — a 20-mile ride completed in exactly sixty minutes. Average speed reads 20.00 mph.
That's a solid, realistic pace for a fit rider on flat-to-rolling terrain, roughly matching what a strong club rider might hold on a well-paced group ride. Halve the time to 0.5 hours at the same 20-mile distance and speed would double to 40 mph — a reminder of how sharply average speed responds to time, since it sits in the denominator of the formula.
Questions
What's a good average cycling speed?
For context, casual recreational riders often average 10-14 mph, a fit club rider on rolling terrain might hold 16-20 mph, and racers and strong time trialists can exceed 25-30 mph. These ranges shift substantially with fitness, terrain, wind and whether the rider is drafting in a group, so they're reference points, not targets.
Should I use moving time or total elapsed time?
Either is valid, but they answer different questions — total elapsed time (including stops at lights, cafes or mechanicals) gives an honest door-to-door average speed, while moving time alone reflects riding effort with stoppage removed. Bike computers usually report both separately; be consistent about which one you enter when comparing speeds across different rides.
How is this different from the bike-pace instrument on this site?
Both use the same distance and time you enter — this page reports the result as average speed in mph, bike-pace reports the equivalent as pace in minutes per mile. Speed is the more familiar figure for describing overall performance and comparing rides, while pace is often more useful for planning splits across the legs of a route.
How fast is the fastest anyone has ever cycled for an hour?
The UCI Hour Record — an athlete's total unpaced distance on a velodrome in sixty minutes — currently stands at 56.792 km for men (Filippo Ganna, 2022), about 35.3 mph average, and 50.267 km for women, roughly 31.2 mph. Both were set under highly controlled velodrome conditions that eliminate wind and traffic, well beyond what's realistic on an open road.
Does headwind or drafting change the speed this calculator reports?
No — this instrument only divides the distance and time you provide; it has no model of wind, drafting or terrain built in. Two rides with identical distance and time produce the same average speed here regardless of conditions, even though the effort required to produce that speed could have been very different between them.