Pace Calculator

Calculate running pace, speed, and race time predictions

How Is Running Pace Calculated?

Pace = Time / Distance — expressed in minutes per kilometer (min/km) or minutes per mile (min/mi). Speed is the inverse: Distance / Time, typically in km/h or mph.

Result: Your pace per km and per mile, speed in km/h, and estimated finish times for common race distances (5K, 10K, Half Marathon, Marathon).

  • Key variables: distance and time
  • Limitation: Race predictions assume even pacing — terrain, elevation, and fatigue affect actual times

Run Details

Units:
Metric (km)
Imperial (miles)
1 km50 km
km
010
h
059
min
059
sec

Enter your run details to see your pace and race predictions

Understanding Running Pace

Pace is the time it takes to cover a set distance, typically expressed as minutes per kilometer or mile. Knowing your pace helps you train effectively, set realistic race goals, and avoid burning out during long runs.

Common Race Distances

Common Race Distances in Kilometers and Miles
RaceDistance (km)Distance (miles)
5K5.03.1
10K10.06.2
Half Marathon21.113.1
Marathon42.226.2

Frequently Asked Questions

What's a good running pace for beginners?

Beginners typically run at 7:00-9:00 min/km (11:00-14:30 min/mile). The key is maintaining a pace where you can hold a conversation - this is called "conversational pace" and builds your aerobic base safely.

How do I improve my running pace?

Improve pace through consistent training: run more miles at easy pace (80% of training), add weekly tempo runs at threshold pace, include interval sessions for speed, and allow proper recovery between hard efforts.

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