Running Calculators›How Long to Walk›Walk a half marathon
21.10 km · 13.11 miles

How Long Does It Take to Walk A half marathon?

Walking a half marathon takes about 4:22:11 at an average 3 mph, 3:44:44 at a brisk 3.5 mph and 5:14:38 at an easy 2.5 mph.

Easy stroll · 2.5 mph
5:14:38
24:00/mi · 14:55/km
Average walk · 3.0 mph
4:22:11
20:00/mi · 12:26/km
Brisk walk · 3.5 mph
3:44:44
17:09/mi · 10:39/km
Fast walk · 4.0 mph
3:16:38
15:00/mi · 9:19/km

Use your own numbers: open the how long to walk calculator →

Walking time for a half marathon at every pace

SpeedPace /milePace /kmTimekcal (60 kg)kcal (75 kg)kcal (90 kg)
2.5 mph (4.0 km/h) · easy stroll24:0014:555:14:3896312041445
3.0 mph (4.8 km/h) · average walk20:0012:264:22:1190811351362
3.5 mph (5.6 km/h) · brisk walk17:0910:393:44:4486910861303
4.0 mph (6.4 km/h) · fast walk15:009:193:16:3883910491259

Calories: ACSM walking equation, flat ground, gross kcal — gross calories include the energy you would burn at rest anyway, which is why slower (longer) walks show slightly higher totals. Steps: about 30,200 for an adult of average height.

Time to walk a half marathon
Average adults walk at roughly 2.5–3.5 mph; pace slows on hills, in heat and when carrying weight.

Tips for walking a half marathon

  • Start at a conversational pace and settle into a rhythm; most people naturally walk around 100–120 steps per minute.
  • Plan water and fuel for anything over about 90 minutes.
  • Walking a race? Check the course cut-off time. The run-walk calculator shows how adding short running intervals speeds you up.

Other walking distances

Last reviewed: October 2026 · Health disclaimer

FAQ

Walking a half marathon: questions

About 4:22:11 at an average walking speed of 3 mph (4.8 km/h). A brisk 3.5 mph walker takes about 3:44:44, and an easy 2.5 mph stroll about 5:14:38.

A half marathon is 21.10 km or 13.11 miles.

Roughly 30,200 steps for an adult of average height. Taller people take fewer, longer steps.

At 3 mph, about 1135 kcal for a 75 kg (165 lb) person, using the ACSM walking equation (gross calories). Heavier people, hills and faster walking burn more.