The Ironman Boulder 70.3 will return to Boulder County on Saturday, Aug. 3. Images of course maps and detour routes linked at the end of this notice, you may also use our interactive detour map found here: www.boco.org/IronmanAugust

Please avoid crossing the course, if possible. If you need to get from one side to the other, please use US 36/N. Foothills Highway, SH 66/Ute Highway, Jay Road, and/or Hover Road to get around the course.

Avoid using Niwot , Nelson, or St. Vrain roads. Those roads will be open, but you will experience longer delays than if you use the loop around. Law enforcement will be at all major intersections to help you turn or move through the race course, but you should expect delays if you are crossing the route.

Use the link at the bottom of this post to find links to view those photos in a larger format. Plan for increased travel times in the vicinity of the courses.

TRAVEL RESTRICTIONS
The bike course will active between 7 a.m. and 2 p.m. and will use the following roads: SH 119/Diagonal Highway, N. 63rd St., Monarch Rd., Niwot Rd., Neva Rd., US 36/N. Foothills Hwy, Nelson Rd., N. 65th St., St. Vrain Rd., SH 66/Ute Highway, N. 75th St./N. 73rd St., and 71st St.

All residents will have access to their homes, but you may encounter delays and should follow recommended detours. Event marshals will grant access to residents when safe to do so

• N. 63rd St. WILL BE CLOSED to vehicular traffic from Monarch Road. to SH 119/Diagonal Highway from 6 a.m. to 5:30 p.m.
• N. 71st St. WILL BE CLOSED to all traffic from Monarch Road to SH 119/Diagonal Highway from 6 a.m. to 2 p.m.
• Niwot Rd. WILL BE CLOSED to all traffic from SH 119/Diagonal Highway to 71st Street from 6 a.m. to 2 p.m.
• Monarch Road WILL BE CLOSED to all traffic from SH 119/Diagonal Highway to 71^st Street from 6 a.m. to 2 a.m. Access to IBM will be allowed via 71^st Street to Monarch Road =. NO ACCESS TO IBM VIA SH 119/Diagonal Highway
• Significant detour and heavy traffic is expected on SH 119/Diagonal Highway, though it will remain open to through traffic from Boulder to Longmont. All traffic will be shifted onto the Longmont-bound travel lanes to allow the bike course to use the Boulder-bound lanes.
• N. 51st/55^th Streets will be closed to vehicular traffic from Jay Road to Monarch Road except to local residents between 7 a.m. to 5 p.m.
• Boulder Reservoir will be closed all day on Friday and Saturday, Aug. 2 and 3.

Please use alternate routes around the course (i.e., US 36, Oxford Road, and Airport Road).

SPECTATOR SHUTTLES
All Ironman spectators must use the shuttle services to Boulder Reservoir from 7 a.m. - 2 p.m., no exceptions. Athletes and spectators arriving before 7 a.m. and after 2 p.m. must have a valid parking pass or utilize the shuttle services.

Shuttle Stops:

• Boulder High School - 1604 Arapahoe Ave, Boulder
• Boulder Marriott - 2660 Canyon Blvd, Boulder
• Holiday Inn Express – 4777 N. Broadway, Boulder
• Hampton Inn Boulder North – 6333 Lookout Rd., Boulder

RECREATIONAL CYCLING IMPACTS

Recreational cyclists should avoid traveling in the same direction as the riders on the bike course and avoid traveling on and across the SH119/Diagonal Highway between 55th Street and Oxford Road.

The IBM Connector Trail will be open to maintain cyclist access across the course on the SH 119/Diagonal Highway.

Recreational cyclists may use N. 63rd Street from Niwot Road to the IBM Connector Trail, but they may not cross SH 119/Diagonal Highway.

ADDITIONAL QUESTIONS OR CONCERNS?

If you have questions or concerns, please email Boulder@ironman.com.

You can also access more information at the event website: http://www.ironman.com/boulder. Click on the “spectators” tab for more info.

You may also contact John Holste, Boulder County Special Events Coordinator at jholste@bouldercounty.org.