Colossal Vail Participant Guide

Click here for the 2023 Participant Guide.

v3 posted 11/28/23 clarifies the Pistol Hill (PH) Northbound (39.1) cut-off as 7:00 pm, 12 hours.

v2 posted 11/10/23 includes one change: The north section of the 50 mile course and the entirety of the night half marathon course will have orange reflective flagging. Daytime segments for all races remain pink other than the equestrian bypass portion of the daytime half marathon which will be yellow.