Half marathon in 1:45:00 with mile splits
- Pace ≈ 8:01 per mile
- Per km ≈ 4:59
- Split count = 13.1 splits
everyday calculator
Pace Split Calculator
Enter race distance and finish time to get pace per mile/km plus customizable split times.
Results
- Pace minutes (per mile)
- 8.00
- Pace seconds (per mile)
- 1.00
- Pace minutes (per km)
- 4.00
- Pace seconds (per km)
- 59.00
- Split minutes
- 8.00
- Split seconds
- 1.00
- Number of splits
- 13.10
How to use this calculator
- Enter race distance in miles plus your goal or actual finish time.
- Choose the split distance and unit (mile or kilometer).
- We calculate pace per mile/km, split time for your interval, and how many splits fit in the race.
Inputs explained
- Distance (miles)
- Race distance in miles. Convert km to miles if needed (10K ≈ 6.213).
- Finish time
- Hours, minutes, and seconds for the entire race.
- Split distance & unit
- Interval you want splits for—1 mile, 1 km, or any custom distance.
How it works
We convert finish time into total minutes, divide by distance to get pace per mile.
Per-kilometer pace uses the 1 mile = 1.60934 km conversion.
Split time multiplies pace by your chosen interval (mile or km). Split count = total distance ÷ split distance.
Formula
Pace/mile = Total minutes ÷ Distance_mi Pace/km = Pace/mile ÷ 1.60934 Split time = Pace/mile × Split_distance_mi
When to use it
- Building pacing charts for half/full marathons with custom mile or km splits.
- Planning treadmill workouts by converting race pace into per-interval times.
- Checking whether negative-split goals align with your target finish time.
Tips & cautions
- Round split times to the nearest second for practical pacing.
- If you train in kilometers, set split unit to km even if the race distance is entered in miles.
- Adjust split distances to match track intervals (e.g., 0.25 miles for 400m equivalents).
- Assumes an even pace across the entire distance—does not model changing effort or terrain.
- Requires distance in miles for the main input; convert km races manually before entry.
- Does not provide cumulative split table; multiply split time by split index for a rough guide.
Worked examples
10K goal of 45:00 with 1 km splits
- Split distance = 1 km
- Pace ≈ 4:30 per km
- Split count = 10
Deep dive
Turn finish times into per-mile and per-kilometer splits by entering distance, goal time, and your preferred split length.
Perfect for race pacing plans, treadmill settings, and custom interval charts without spreadsheet math.
FAQs
- Can I enter kilometers for race distance?
- Enter the kilometer number converted to miles (e.g., 10K ≈ 6.213). A future update may add a dedicated toggle.
- Does it show cumulative split times?
- We provide per-split timing and the number of splits. Multiply split time by the split index for cumulative marks.
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