Running Pace Calculator
Convert race distance and finish time into pace per kilometre.
A 55-minute 10K is a 5:30/km pace (10.9 km/h). Most beginners should target conversational pace — if you can’t talk in short sentences, slow down. Roughly 80% of weekly running should feel easy; only 20% hard.
How to use the running pace calculator
- Enter distance and finish time.
- Get pace per km and speed.
- Plan race splits from it.
Running Pace Calculator — FAQs
What’s a good 5K time for beginners?
30–35 minutes (6:00–7:00/km) is a solid first goal. Sub-25 is strong; sub-20 is serious.
How do I predict marathon time?
Double your half-marathon time and add ~10–20 minutes (Riegel formula). A 2:00 half ≈ 4:10–4:20 full.
What is ‘conversational pace’?
A pace where you can speak in full sentences — roughly 60–70% of max heart rate. This is where aerobic fitness is built.
Should I run by pace or heart rate?
Heart rate adapts to heat, hills and fatigue; pace doesn’t. Use HR for easy days, pace for workouts.
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