Health & Wellbeing2 min check

Running Pace Calculator

Enter a target pace and we'll show finish times for popular distances — or enter a goal time and see the pace you need to hold.

Short answer

Pace (min/km) × distance (km) = finish time. We project 5K, 10K, half marathon (21.0975 km) and marathon (42.195 km) from your pace, plus the pace needed to hit a target time.

Step 1 of 10%

Calculation method, coverage and version

Inputs used: Target pace minutes (per km), Target pace seconds (per km), Goal distance (km, optional), Goal finish time (minutes, optional).
Calculation approach: The calculator applies the rules and assumptions described in “How it works” to the values you enter. Rounding can cause small differences from an official or provider calculation.
Coverage: Health & Wellbeing. UK nations, tax treatment, local rules and provider criteria can differ; check the official sources shown below before acting.
Content version: No page-specific review date is currently published. Treat the result as indicative and verify current rules independently.

Not included unless explicitly requested: personal circumstances not entered, provider discretion, future rule changes, professional fees and case-specific exceptions. Read the full calculator methodology.

How it works

Time = pace × distance. We multiply your per-km pace by 5, 10, 21.0975 and 42.195. For a goal time, required pace = goal seconds ÷ goal distance.

Worked example

5:30/km pace → 5K in 27:30, 10K in 55:00, half in 1h 56m, marathon in 3h 52m.

Who should use this

•Recreational runners planning a race goal
•Coaches building training paces
•Anyone tracking pace progression

Common mistakes

×Confusing min/km and min/mile (1 mile = 1.609 km)
×Assuming you can hold 5K pace for a marathon — it slows ~30–60s/km
×Ignoring elevation when pacing trail runs

Frequently asked questions

What's a good 5K time?▾

Beginner: 30+ min. Intermediate: 22–25 min. Advanced: under 20 min.

How do I improve marathon pace?▾

Build weekly mileage, add tempo runs at half-marathon pace, and long runs of 28–35 km.

Pace vs speed?▾

Pace is min/km (lower is faster). Speed is km/h (higher is faster). 6:00/km = 10 km/h.

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