Calculating Cycling and Ride Time
Ride time = Distance ÷ Average Speed. For a 40-mile cycling ride at an average speed of 16 mph: 40 / 16 = 2.5 hours = 2 hours 30 minutes. Average cycling speeds vary widely: leisure cycling 8–12 mph (13–19 km/h), recreational fitness cycling 12–16 mph (19–26 km/h), experienced cyclists 16–20 mph (26–32 km/h), competitive riders 20–28 mph (32–45 km/h). Wind, elevation, road surface, and fatigue all affect actual average speed.
For planning rides, add 10–20% time buffer for traffic lights, rest stops, punctures, and navigation. Elevation gain significantly slows average speed: an extra 100 m of climbing per 10 km typically reduces average speed by 1–2 mph. Strava and Garmin calculate moving time (excluding stops) and elapsed time separately. For group rides, estimate the group's average speed and add time for regrouping at key points.
Ride Time Estimates by Distance and Speed
| Distance | 12 mph | 16 mph | 20 mph |
|---|---|---|---|
| 10 miles | 50 min | 37 min | 30 min |
| 25 miles | 2 hr 5 min | 1 hr 34 min | 1 hr 15 min |
| 50 miles | 4 hr 10 min | 3 hr 8 min | 2 hr 30 min |
| 100 miles | 8 hr 20 min | 6 hr 15 min | 5 hr 0 min |
