A walk can be worthwhile without becoming a number you need to beat tomorrow.

Measurement changes what it measures. Attach a number to a walk and the walk gradually turns into a score, so that a shorter one starts to feel like a failure rather than an hour outside. What was restful becomes another thing you can fall behind on.

Go out once this week without tracking any of it. Take the route you like rather than the efficient one and come back when you feel like it. If the absence of a number makes you uneasy, that is worth noticing on its own.