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September 8, 2022

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Andrew Barth, 303-441-1032

Two cycling events in Boulder County Sept. 10–11, 2022

Temporary morning road closures affect westbound Jay Rd. on Saturday, and westbound CO 119 in Boulder Canyon on Sunday

Boulder County, Colo. - Two cycling events will be taking place in Boulder County the weekend of Sept. 10–11, 2022, the Harvest Moon Triathlon on Saturday, Sept. 10, and the Buffalo Bicycle Classic on Sunday, Sept. 11. Both events have road closures, but most roads used for both events will remain open to all users.

Saturday, Sept. 10 - Harvest Moon Triathlon

On Saturday, Sept. 10, the Harvest Moon Triathlon will start at 7:30 a.m. with the cyclists entering the road at approximately 7:50 a.m. Riders will be single file and spread out, with the last cyclists leaving Boulder Reservoir at approximately 9 a.m. All cyclists will be off the road by 2 p.m. A sweep vehicle will follow the last cyclists and alert the police and course marshals along the way so that traffic can return to normal as soon as possible.

Westbound Jay Rd. will be closed from CO 119/Diagonal Highway to 51st St. from 7:15 a.m.-2 p.m. on Saturday. All other roads on the bike course – including eastbound Jay Rd. from 51st St. to CO 119/Diagonal Hwy. – will remain open throughout the race. View the course maps at

Questions or concerns about the Harvest Moon Triathlon may be emailed to Lance Panigutti, Race Director at, or John Holste, Boulder County Special Events coordinator at

Sunday, Sept. 11 - Buffalo Bicycle Classic

On Sunday, Sept. 11, the westbound lane of CO 119 in Boulder Canyon will be closed to non-emergency vehicles from 6:30–9:30 a.m. for the Buffalo Bicycle Classic, a scholarship fundraising bike ride. The eastbound lane of Boulder Canyon and all other roads used will remain throughout the event.

Westbound CO 119 traffic may detour to Nederland and Peak to Peak Highway during the closure by using Lefthand Canyon Dr., Coal Creek Canyon, or Sunshine Canyon Dr./ Gold Hill Rd. View the course maps at

Questions or concerns about the Buffalo Bicycle Classic may be emailed to, or John Holste, Boulder County Special Events coordinator at

Safety For Road Users

If you are traveling through the area during either event, please pay close attention to the Boulder County Sheriffs, Colorado State Patrol, and the volunteer traffic marshals who will be helping to ensure safety for riders and travelers alike. When passing a bicyclist, motorists must allow at least three feet of space between their vehicle and a bicyclist. To pass a bicyclist safely, drivers may cross a double yellow center line when oncoming traffic is clear.

Saturday, Sept. 10, Harvest Moon Triathlon course map

Sunday, Sept. 11 Buffalo Bicycle Classic course maps