The Williams Route 66 Marathon Relay consists of three to five legs, with distances varying from 5 to 5.6 miles in length. This consistent distance allows team members to train together as a team, making it the perfect corporate initiative. Racers will compete on a USATF certified course while being electronically timed. Each team must have between three and five different participants that are at least 12 years old. Team members running more than one relay leg must run consecutive legs. Invite your co-workers, friends and family to build a relay team today. Then register your team for the marathon relay – right away!