health

Half Marathon Pace Calculator

Q: What pace do I need for a sub-2 half marathon?

A sub-2-hour half marathon (21.0975 km) requires an average pace of 5:41 min/km (9:09 min/mile) or faster.

Q: How do I use the Running Pace Calculator?

Open the page and fill in the input fields — results update automatically. Pace per km/mile, speed and finish time.

Q: Are the results accurate?

Results follow published international standards (WHO, ACE, IOM) and are for reference only.

Q: Can this replace medical advice?

No. Always consult a qualified healthcare professional for health decisions.

Q: Is it free? Do I need to sign up?

Completely free. No registration, login or download required.

Half marathon pace calculator: enter your target finish time for 21.0975 km to get the required pace per kilometer/mile, plus split times.

Free online · Instant results

Pace (min/km) = total time ÷ distance. 1 mile = 1.609 km. Splits assume even pacing — real races: start 5-10 s/km slower.

Distance

Finish time (h : m : s)

Your pace

2'36"/km

Elite (sub-4 pace)

Speed23.02 km/h

Pace per mile4'12"/mi

Per 400m lap1:03

LevelElite (sub-4 pace)

Step-by-step

1Total time: 0:55:00 = 3,300 s
2Pace = time ÷ distance = 3,300 ÷ 21.0975 = 156.4 s/km = 2'36"/km
3Speed = 3600 ÷ 156.4 = 23.02 km/h

Finish times at 2'36"/km

Event	Distance	Finish time
5K	5 km	13:02
10K	10 km	26:04
Half marathon	21.0975 km	55:00
Marathon	42.195 km	1:50:00

💡 Level reference (pace/km): <4'00 elite, 4-5' competitive, 5-6' advanced, 6'-7'30 recreational, beyond beginner. Negative split (second half faster) is the pro racing strategy.

Frequently Asked Questions

What pace do I need for a sub-2 half marathon?▼

A sub-2-hour half marathon (21.0975 km) requires an average pace of 5:41 min/km (9:09 min/mile) or faster.

How do I use the Running Pace Calculator?▼

Open the page and fill in the input fields — results update automatically. Pace per km/mile, speed and finish time.

Are the results accurate?▼

Results follow published international standards (WHO, ACE, IOM) and are for reference only.

Can this replace medical advice?▼

No. Always consult a qualified healthcare professional for health decisions.

Is it free? Do I need to sign up?▼

Completely free. No registration, login or download required.

💡

This is a dedicated variant of the Running Pace Calculator, pre-configured for this scenario with tailored FAQs.