The main rule is you must race together as a team. Often race rules and regulations will state that all team members must stay within 50 to 100 yards of each other at all times. You must also finish the race with the same set of team members you started the race, all members completing the course in its entirety. You must also progress through the race in order, as prescribed by the race directors.

Beyond that, you should receive a race rules and regulations sheet from the race director prior to the race. This will layout any of the specific rules and requirements for that race. Some things you may enounter will include out of bounds areas, illegal routes, minimal environmental impact requirements, time cutoffs, etc.