There is an existing challenge that is not mine, and it would be a lot easier to determine if I qualify for it if there were a checker. It seems like it might be possible to design a checker around it, but I don't know for sure. You have to find traditional caches located various distances from the nearest *physical* cache. Here are the distances the cache owner requires:
.10 to .12 mile
.25 to .29 mile
.50 to .69 mile
1.0 to 1.1 mile
2.0 to 2.2 miles
3.0 to 3.3 miles
4.0 to 4.4 miles
5.0 to 5.5 miles
9.9 to 12.0 miles
Can a checker for this one be designed? Thanks in advance.