You can estimate distance by stride length, line of sight, or the angle subtended by a known-size object.
Quick check
Which is the most reliable way to roughly judge distance on foot?
Field estimation tricks
- Pace count — know your stride length; count paces; multiply.
- Known-size objects — a car is ≈4 m, a door ≈2 m; compare.
- Angular size — a thumb at arm's length covers ≈2°; use it to bracket far objects.
- Round and bracket — give a low guess and a high guess; the truth is between.
Estimates aren't lazy — they're a sanity check. If a map says 200 m but your pace count says 800 m, one of them is wrong, and now you know to look.
Your turn
Your stride is about 0.8 m. You walk 250 paces along a field. Roughly how long is it?