Time to walk 21 miles

Walking Time Calculator / miles
How long does it take to walk
mi

How long to walk 21 miles?

Answer

Walking 21 miles takes about
6 hours and 38 minutes

≈ 6.63 hours

Average walking pace ≈ 3.17 mph (5.1 km/h) · non‑stop, flat ground

21 miles at other paces
2 mph10 h 30 minslow2.5 mph8 h 24 minleisurely≈ 3.17 mph6 h 38 minused here3.5 mph6 hbrisk4 mph5 h 15 minvery brisk

21 mi = 33.796224 km · 33.796224 km ÷ 5.1 km/h ≈ 6.63 h ≈ 6 h 38 min

See Also

FAQ

How long to walk 21 miles?

Walking 21 miles takes about 6 hours and 38 minutes

What walking pace does this calculator use?

An average pace of 5.1 km/h (≈ 3.17 mph), about 1.42 m/s, between the usual 1.31 m/s and the medium 1.47 m/s walking speeds of a 2020 review of 35 studies (Murtagh et al., Sports Medicine). The paces under the answer show 2 to 4 mph.

Does it include breaks or hills?

No — it is non-stop walking on flat ground; breaks, hills and crowds add time.