These roads will be impacted by Saturday’s Tri Boulder triathlon

DENVER ( KDVR ) — A triathlon on Saturday could cause traffic headaches around the Boulder Reservoir.

The Tri Boulder triathlon is scheduled to begin at 7:15 a.m. with cyclists hitting the pavement at about 7:25 a.m. The last cyclists to leave the reservoir will be at approximately 8:30 a.m., and organizers anticipate the last cyclists will be off the road by 12:30 p.m.

Riders are also going to be riding single-file and be spread out. A sweep vehicle will follow the last cyclists and alert course marshals and police along the way, so traffic will be able to return to normal as quickly as possible.

Motorists are allowed to pass bicyclists but must allow at least three feet of space between their vehicle and the bicyclist. Drivers are also allowed to cross a double yellow center line to provide bicyclists extra room if the oncoming traffic lane is clear.

What roads will be impacted by Tri Boulder

Westbound Jay Road will be closed Saturday from Highway 119/Diagonal Highway to 51st Street from 7:15 a.m. to 11:30 a.m.

All other impacted roads will remain open for drivers throughout the event. This includes eastbound Jay Road from 51st Street to Diagonal Highway.

Motorists are asked to pay close attention to Boulder County Sheriff’s Office deputies in the area and the volunteer traffic marshals who will be ensuring the safety of everyone involved.

The Tri Boulder triathlon includes several races. The sprint triathlon and duathlon bike course is about 17.3 miles long. Riders will exit the Boulder Reservoir park and turn left onto 51st Street, before heading right on Highway 36.

Then, riders will turn right again onto Neva/Niwot Road and right onto North 63rd Street. Finally, riders will turn right onto Diagonal Highway, right onto Jay Road, and right on 51st Street, and head back into the park.

The Beast Triathlon and the Olympic bike course are similar. Riders are instructed to exit the Boulder Reservoir and turn left onto 51st Street.

Then the course goes right onto Jay Road, right onto Highway 36, and right onto Nelson Road. Riders are then instructed to turn right onto North 75th Street, travel straight onto North 73rd Street, and turn right onto Niwot Road.

The home stretch is turning right onto Diagonal Highway, right onto Jay Road and right on 51st Street, where competitors will head back into the park.

For the latest news, weather, sports, and streaming video, head to FOX31 Denver.