New for this year, a revised course of two unique loops which start and finish in downtown Carter Park as in years past. Experience the historic mining trails and parts of the Colorado Trail in Summit County.

Aid stations and medical coverage will support racers during the event. Carter park will be event headquarters where the cloverleafs converge and team riders’ exchange.

Competitors will proceed under a neutral start from Carter Park up Boreas Pass Road to Baldy Mt. Road to Sally Barber Road to begin the race

Marathon Racers ride Loops 1 and 2.
XC Racers race Loop 1.
Appetizer Racers compete on a shortened Loop 1.

Loop Maps: Not updated yet for 2020

Breckenridge Town Map

Course GPS Routes:

Aid Stations:

Aid will be provided on course (see course maps and descriptions), about every 10 miles, stocked with water, Hammer Heed hydration drink, Hammer Gels, KIND Bars, PB&J’s, bananas, oranges. You can also leave Drop Bags for transport to a particular aid station. You must leave these in the Carter Park aid bag drop zone on Saturday morning by 7:30am.



Josh Tostado
Josh Tostado with plenty of time to kill on Boreas summit