Alone

Waking hopping etc okay, not riding in a powered vehicle or riding a bike. Poles okay but no motors engines or wheels helping their body move. They must move under own power not be dragged or carried. They can have accompanying vehicles or drones but those have to be physically independent

They can use caches of food and water etc but all must be in place before starting. This also applies to any accompanying vehicles

They cannot meet other people on the way but they can communicate

They have to go at least 4000 miles as the crow flies. Full circumference is 6783

It has to at least sort of be a circle around the moon returning to near the starting place