All registration fee increases are effective at 12:00 AM Mountain Standard Time.
As each Endurance Challenge race reaches maximum capacity, runners will have the option to sign up for the event wait list. If a registered participant cancels, race entry will be granted to wait-listed runners in the order their registration was received. The wait-listed runner will be contacted when race entry is granted. Upon acceptance into the event, entrants must confirm their intent to participate and submit their registration payment within 24 hours to secure their spot.
* The Marathon Relay registration fee is PER TEAM. The Team Captain must pay the fee in full. Although we recommend four participants per team, you may register two or three participants per team if you so choose.