Thread drift alert: Where in an area accessible by road would it take SAR 24 hours to respond? That sounds rather flaccid.

I guess going into that environment, I would be sure to have amps, etc. and be at least reasonably self-sufficient. Which is actually a pretty good thing.

I have been impressed with the accuracy of pedometers that claim to be able to distinguish random motion from actual strides. In any event, you need to nail down the length of your pace rather accurately. Counting paces is much better than just a WAG as to the distance covered.