Marathon Pace & Split Calculator

A marathon is 42.195 km (26.2188 miles). With 42 km splits and 26 mile splits, managing pacing on race day is critical — going even 5 seconds per km too fast in the first half is enough to cause a painful fade in the final 10 km.

Enter 42.195 km (or 26.2 miles) as your distance and your goal time. The calculator generates a complete split table for every km and every mile, plus your pace in min/km and min/mile.

For a 4:00:00 marathon, the required pace is 5:41 min/km (9:09 min/mile). The halfway split target is 1:59:59 for even pacing. Many elite runners target a 1–2 minute negative split — this calculator gives you the even-split baseline to work from.

Export the CSV and create a wristband split table using a spreadsheet, or program the target times into your Garmin structured workout for audio splits during the race.