Build your 15K race plan
Choose what you know, then calculate pace, finish time and every split.
Split chart
Even pace| Split | Split pace | Split time | Elapsed |
|---|
Calculate your 15K pace, finish time and splits
The 15K Pace Calculator converts between a target finish time and the pace required to achieve it. Enter either your planned 15K time or target pace to calculate pace per kilometre, pace per mile, average speed and cumulative race splits.
You can compare even pacing with a negative-split strategy, generate kilometre or mile split tables, print or save the result as a PDF, download the splits as CSV and create a shareable result.
How to use the 15K Pace Calculator
- Choose whether to calculate from a target finish time or target pace.
- Enter the time or pace you want to use.
- Select even pacing or a negative split.
- Choose kilometre or mile splits.
- Calculate, then print, download or share the result.
Worked example: a 75-minute 15K
An even-paced target of 1:15:00 requires approximately:
| Metric | Result |
|---|---|
| Pace per kilometre | 5:00 |
| Pace per mile | 8:03 |
| Average speed | 12.0 km/h |
| 5K | 25:00 |
| 10K | 50:00 |
| 15K | 1:15:00 |
These times assume continuous running at an even pace. Adjust the target for hills, turns, congestion, weather and any expected stops.
Even pace versus negative split
Even pacing uses the same planned pace throughout the race. It is simple to follow and provides clear 5K and 10K checkpoints.
Negative splitting starts slightly slower and finishes faster. This can help control the opening kilometres, but the faster second half must remain realistic for your fitness and the course profile.
Use the calculator’s split options to compare both strategies before race day.
How 15K compares with 10K and a half marathon
A 15K race is five kilometres longer than a 10K and 6.0975 kilometres shorter than a half marathon.
The distance sits between the speed demands of a 10K and the endurance demands of a half marathon. Most runners need a controlled opening, a stable middle section and enough restraint to maintain pace through the final five kilometres.
Practical 15K pacing guidance
- Use the first 2 to 3 km to settle into target effort.
- Check the 5K and 10K splits rather than reacting to every kilometre.
- Adjust pace for hills, wind, heat and crowded sections.
- Use effort alongside watch pace when the course is not flat.
- Increase effort gradually in the final 3 to 5 km when the planned pace still feels controlled.
Related Running Tools
- 10K Finish Time Calculator: calculate 10K pace, finish time and splits.
- Half Marathon Finish Time Calculator: build a half-marathon pacing plan.
- Running Pace Calculator: calculate pace, time or distance.
- Race Time Predictor: estimate equivalent race performances from a recent result.
- Training Pace Calculator: calculate easy, tempo, threshold and interval paces.
- View all Running Calculators
Frequently Asked Questions
What pace is a 75-minute 15K?
A 75-minute finish requires 5:00 per kilometre, approximately 8:03 per mile.
What are the 5K splits for a 75-minute 15K?
The even-paced checkpoints are 25:00 at 5K, 50:00 at 10K and 1:15:00 at the finish.
How far is 15K in miles?
Fifteen kilometres is approximately 9.32 miles.
Is even pacing or a negative split better?
Neither strategy is universally better. Even pacing is simpler, while a controlled negative split can reduce early overexertion. Course profile and fitness should guide the choice.
How do I print or download the split chart?
After calculating the plan, use the print or PDF option, download the split table as CSV, or create a shareable result.