If your distance from cache to cache is more than or equal to twice around the Earth (or 2 x 40,048.6577 km rounded to 80096 km) then you qualify for this challenge
The checker below will work it all out for you. Please attach the resulting list to your log.
Enjoy!
For reference, these Challenge caches have lasted a lot longer than expected. We were going to archive them at the start of 2026. But in chatting with some teams we will leave them to run their natural course.
So should any of these challenge caches attract a “Needs Maintenance” log for any reason.
We, Team StArnaud, will archive them and clean up GZ if anything is there.