Choose the 50km or 100km courseshort course main image


An awesome combination of fast pavement and rolling gravel roads. You’ll roll through Crane Hollow and other classic Boulder County mixed terrain. A road bike (with wide tires) or a cyclocross/gravel bike will be the best choice for this course. Sign up for the Run/Bike Combo and take on the 5.4 mile run before you ride the 50km course!


We’re switching up the 100km course this year adding beautiful views of the Twin Peaks and Carter Lake. You will ride north for a new gravel section and then a roll through a loop by Carter Lake. This means less overall elevation gain and no off-the-bike section. A cyclocross bike or road bike will be your best bet for this course.

gravel riders


We’re so honored for our events to have won 4 Best of the Rockies awards! Best Beer Fest (#sanitastacofest), Best Multi-Sport Festival (#burningcan #lyonsoutdoorgames) Best Road Race (#oldmanwinterrally), Rowdiest event (#burningcan #lyonsoutdoorgames). Huge thanks to @oskarblues, @lyons_colorado @sanitasbrewing @tacosupply ... See MoreSee Less

Were you in the action at this year's Oskar Blues Brewery Old Man Winter Rally? If you see yo self, tag yo self!

Video edited by Connor Tieulie
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