Hiking Time Calculator

Estimate hiking duration using Naismith's Rule: 1 hour per 3 miles plus 1 hour per 2,000 feet of elevation gain. Accounts for terrain and pack weight.

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How It Works

Naismith's Rule (1892): Allow 1 hour for every 3 miles on flat ground, plus 1 hour for every 2,000 feet of ascent. This gives a base pace of about 3 mph. Rough terrain adds 25%, off-trail adds 50%. Heavy packs (>15 lbs) slow you about 0.5% per pound. Always plan to arrive at camp before dark.