5K Pace Calculator: Hit Your Goal Time

The 5K is the shortest of the standard road distances and the one most American runners start with. Enter the finish time you want — the calculator shows the pace in min/km that holds it, plus the equivalent speed. The distance is already set to 5 km, which is 3.11 miles.

Worked example: 5K in 25 minutes

Pace = time ÷ distance = 25:00 ÷ 5 km = 5:00/km, which is 12 km/h, 8:03 per mile and 7.46 mph.

On a US course marked in miles, that is 8:03 at mile 1, 16:06 at mile 2 and 24:09 at mile 3, with roughly 51 seconds left for the final 0.11 mile. Print those three numbers on your hand and you never have to do arithmetic while breathing hard.

Goal times and the pace that produces them

Goal time	Pace (min/km)	Pace (min/mile)	Speed
20:00	4:00	6:26	15.00 km/h
22:30	4:30	7:15	13.33 km/h
25:00	5:00	8:03	12.00 km/h
27:30	5:30	8:51	10.91 km/h
30:00	6:00	9:39	10.00 km/h
35:00	7:00	11:16	8.57 km/h
40:00	8:00	12:52	7.50 km/h

Notice how tidy the left column is: at this distance, every 30 seconds of pace moves the finish time by exactly 2:30. That leverage is why 5K goals are usually set in five-minute blocks — and why shaving 10 seconds per mile is worth a full half-minute at the line.

What a 5K time actually measures

Very little, unless the course was measured too. USATF certification exists so that a 5K in Sacramento and a 5K in Boston are the same 5 kilometers; without it there is no personal best to speak of, only a number. Downhill point-to-point courses, short-measured neighborhood loops and a watch that adds 3% every time you cut a tangent all produce times that do not transfer.

The other thing a 5K time will not tell you is what pace you can hold for twice as far. The 10K pace calculator starts that conversation, and the drop between the two paces is smaller than most first-timers expect.

Training faster than you race

The pace that wins a 5K is built in workouts run above it — repeats of 400 m and 800 m on a track, where the effort is short enough to hold a speed you could not sustain for 3 miles. The track workout pace calculator turns a lap split into the same min/km figure this page uses, so you can see exactly how far above race pace you are working.

For the pacing strategy that turns a good fitness level into a good time, see the negative split calculator, and for other distances the running pace calculator covers all four.