Are there any rules for support vehicles?

Yes. Specific rules for support vehicles are provided in the Race Rules and Regulations. Relay teams are limited to one vehicle only (no exceptions), so larger teams should plan ahead to have a van, pickup truck or other vehicle that can transport the full team and supplies. Ultra and Relay support vehicles must travel ahead of their runner to the next aid station or transition zone and wait for the runner to arrive. This is a critical safety consideration, and for relay teams this allows the team's next runner to be prepared to run the next leg.