[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"content-seo:paceCalculator":3},{"description":4,"seo":5,"faq":8},"Fill in any two of distance, finish time and pace, and this running pace calculator works out the third. Pick a 5K, 10K, half marathon (21.0975 km) or marathon (42.195 km) preset, type a goal time and you get the pace per kilometer you need to hold, plus the same pace per mile and your average speed in km\u002Fh.\n\nIt works the other way too: enter the pace you can sustain and see your projected finish time, or enter a time and pace to see how far that takes you. A split table lists your cumulative time at every kilometer, which is handy for pacing long runs or writing splits on a wristband.\n\nThe math assumes an even pace from start to finish, so treat the numbers as a plan rather than a promise — hills, wind and the day itself will move them.",{"ogTitle":6,"ogDescription":7},"Running Pace Calculator | Pace per km & mile, Splits - Giggleus","🏃 Enter any two of distance, time and pace to get the third, with pace per mile, average speed and a split table. Plan 5K to marathon goal times for free.",[9,12,15,18],{"question":10,"answer":11},"How do I calculate my running pace?","Divide your time by your distance. For example, 10 km in 50:00 is a 5:00\u002Fkm pace, which is 8:03 per mile or 12 km\u002Fh. Enter any two of distance, time and pace and the calculator does it for you.",{"question":13,"answer":14},"What pace do I need for a sub-4-hour marathon?","About 5:41 per kilometer, or 9:09 per mile, held evenly for all 42.195 km. A 2-hour half marathon needs the same 5:41\u002Fkm pace.",{"question":16,"answer":17},"How are miles converted?","One mile is 1.609344 km, so the mile pace is the kilometer pace multiplied by 1.609344. In kilometer mode the per-mile pace appears in the results too, and switching the unit to miles lets you enter distance and pace per mile directly, with speed in mph.",{"question":19,"answer":20},"What happens if I fill in all three boxes?","The box you changed longest ago is treated as the unknown and recalculated from the other two, and it is dimmed so you can tell."]