Running Pace Calculator: Pace, Speed & Splits
Turn a distance and time into pace per kilometre and mile, speed, and even splits.
- 2 cited sources
- Calculates in your browser
Your answer
Appears here as you enter your details. No demo figures — the number is yours, or it is nothing.
Baseline
Know all your numbers
BMI, resting rate, daily burn, eating target, macros, body fat, waist ratios, heart-rate zones and your fitness age: 15 in all. Answer once, see them together, and stop whenever you like.
Get my Baseline →Methodology
Pure arithmetic, done carefully:
pace = time ÷ distance, displayed per kilometre and per mile
(1 mile = 1609.344 m exactly), with speed as its reciprocal and
cumulative kilometre splits assuming perfectly even pacing.
Nothing is estimated or modelled here; the only assumptions are the ones you type in.
Interpreting your result
Pace is the runner's working currency: training plans prescribe it, races are paced by it, and progress shows up in it. The splits table is the practical output, write the key ones on your hand or set them on your watch, and you know at every kilometre marker whether you're on plan.
Even pacing is the strategy to beat: analyses of distance-running records consistently show near-even or slightly negative splits (second half marginally faster) produce the best times. If your target pace only feels sustainable with a fast start, the target, not the pacing, is the problem.
Limitations
- GPS watches routinely measure road races long by 0.5 to 1%, so your watch pace will read slightly slower than your official pace. The official distance is what counts.
- Hills, wind and heat change the effort a pace costs; effort-based running (or heart-rate zones) handles rough conditions better than rigid splits.
- Track distances are exact; trail-race distances often aren't. Adjust expectations accordingly.
Sources
Pull the receipts, 2 cited sources
Frequently asked questions
- How do I calculate my running pace?
- Divide your total time by the distance: a 50-minute 10 km is 5:00 per kilometre (about 8:03 per mile). This calculator does the conversion both ways and builds your splits.
- What is a good 5k or 10k pace?
- Recreational 5k times commonly span 20 to 35 minutes (4:00-7:00 /km). Pace is personal, so the useful comparison is your own trend, not a global average.
- Should I run even splits?
- For most race distances, even or slightly negative splits (second half marginally faster) are the well-tested strategy. The splits table here assumes even pacing.
- How does pace translate to treadmill speed?
- Speed = 60 ÷ pace-in-minutes. A 5:00 /km pace is 12.0 km/h; the calculator shows the conversion for your own numbers.
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