Pace Calculator
Enter your race time and distance to calculate pace per kilometre or mile, speed in km/h or mph, and your full breakdown.
Quick race presets
Your race time
Track every run with a GPS watch
A GPS watch is the most useful tool for monitoring your pace in training and on race day. These are well-regarded picks at different price points.
Garmin Forerunner 265
AMOLED display, live pace alerts, and advanced training analytics. The best mid-range option for runners serious about their times.
View on AmazonGarmin Forerunner 255
Accurate GPS, up to 14 days battery life, and a clean interface. A reliable first serious running watch.
View on AmazonNike Pegasus
Versatile daily trainer for tempo runs, long runs and easy miles - one of the most popular running shoes year after year.
View on AmazonHalf marathon training plans
Half marathon plans for every level, with pacing tables and race-week preparation built in.
Beginners Half Marathon Finisher Plan
£5.99
Intermediate Half Marathon Running Plan
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Breaking the Barrier: 1:45 Half Marathon Plan
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How the Pace Calculator works
Enter your total time and distance. The calculator divides total time by distance to give you pace per unit, and converts the result to speed in km/h and mph. Switch between kilometres and miles using the unit buttons.
Frequently asked questions
What is running pace?
Pace is how long it takes you to cover a set distance - usually expressed as minutes per kilometre or minutes per mile. A pace of 5:00/km means you take 5 minutes to run 1 kilometre.
How do I convert pace from km to miles?
Multiply your min/km pace by 1.60934. So a 5:00/km pace equals roughly 8:03/mile. This calculator does the conversion automatically.
What pace do I need to run a sub-4 hour marathon?
You need to average 5:41 per kilometre (9:09 per mile) to finish a marathon in under 4 hours.
Is pace the same as speed?
They are inverses of each other. Pace measures time per distance (min/km), speed measures distance per time (km/h). Lower pace = faster running.