The M25 is a large circular tour of East Falkland. It is 193Km and was entirely gravel until a few years ago when they built a 50Km tarmac road between the military base of Mount Pleasant Complex (MPC), and the town of Stanley. The M25 uses about 40Km of this road, however there is still a gravel verge on the side so that the route can be run entirely on gravel. 

The route starts at MPC and goes clockwise so that the tarmac road is the last 40Km.