The North Face Thailand includes three ultra distances: 100, 75 and 50km. The course is fully marked and chipped; runners must run over chip-timing mats.
Runners of the 100 and 75km distances will have their gear checked at a specific checkpoint to ensure they carry the required hydration. External assistance is only allowed at the checkpoints.
There is a mandatory gear list and there will be random checks throughout the race.
Cut-offs are in place at each checkpoint.

