Running Pace Calculator

It varies hugely. A casual jog for most adults is 7:30–9:00/km (~12–14 min/mile). Recreational running is 5:30–6:30/km. Competitive club running is under 4:30/km. Elite marathon pace is around 2:50/km. Compare to your own previous runs — absolute averages are less useful than tracking a personal trend.

The calculator multiplies pace by distance — a pure arithmetic projection assuming even pace throughout. Real race times typically run 2–5% slower than projected for 10K and below, 5–10% slower for half-marathon and marathon, due to pace fade, hills, weather, and aid stops. The Riegel formula (T2 = T1 × (D2/D1)^1.06) is a more realistic projection if you have a recent shorter race time.

Because runners across Europe use both. Almost all races and most apps default to km, but mile-based pace is common for treadmills, US-format training plans, and athletes who came from the British tradition. Showing both removes a conversion step.

It gives you a goal pace and projected time, but a marathon requires a training plan, not just a calculator. Established plans (Pfitzinger 12-week, Hansons, Higdon) prescribe weekly mileage, long runs, tempo runs, and intervals. The pace calculator's job is to set the target — race-day preparation is what actually delivers it.

Divide minutes per mile by 1.609 (or multiply by 0.6214). 8:00/mi = 4:58/km. 10:00/mi = 6:13/km. The result above shows both at once, so you don't need to do the maths if you switch between pace systems mid-training.

Most evidence-based marathon plans have you training at race pace for only 10–25% of weekly volume. The bulk is easy aerobic running — much slower than race pace — with smaller doses of tempo and interval work. All-out training plateaus faster than mixed training and dramatically increases injury risk.