News & Press Releases

Thursday, June 05, 2014
Ironman event in Boise to bring impacts to local and state roads


June 5, 2014 

Information Contact:
Nicole Pineda
Office: 208-387-6257
Cell: 208-919-5697

Ironman event in Boise to bring impacts to local and state roads

Boise- Swim, bike, run – it’s the annual competitive Ironman 70.3 Triathlon event bringing more than 1,200 athletes to the Boise area to compete, and draw thousands of spectators to cheer. The three events will take place in and around Boise Saturday (June 7) starting mid-morning and continuing through late evening.

Traffic delays, road closures and detours should be expected along multiple Ada County Highway District (ACHD) and Idaho Transportation Department (ITD) roads that will serve as the biking and running courses. However, some of the changes this year mean that no roads will be closed for multiple days, and the busy Front and Myrtle Streets in downtown Boise will not be impacted.

Course maps for all three phases of the event can be found at the following link:

The following are specific impacts for the various portions of the race, involving both ITD and ACHD roads:


• Capitol Boulevard from Protest Avenue to Myrtle Street
o  Closed from 11 a.m. to 8 p.m.
• Capitol Boulevard from Protest Avenue to River Street
o  Closed from 11 a.m. to 6:30 p.m.
• Capitol Boulevard from University Drive to River Street
o  Closed from 11 a.m. to 12 a.m. midnight


I-84 Impacts:

• The I-84 Eisenman Road Interchange (Exit 59) eastbound and westbound off-ramps will be closed. Advance signage on I-84 will be provided directing motorists to use the Gowen Road Interchange (Exit 57). Electronic message boards will be placed in both directions of I-84 a couple of days before the race to alert motorists of the race-day closure.

Idaho 21 Impacts:

• Between the traffic signal where Idaho 21 intersects with Technology Way (the road headed to Micron) and E. Grand Forrest Drive (the road headed to Columbia Village):
o Southbound traffic will be diverted onto E. Grand Forrest Drive, loop through Columbia Village and return to Idaho 21 at the intersection of Idaho 21/Technology.
o Northbound traffic will remain on Idaho 21, but will be channeled into the southbound lane.
• Between E. Grand Forrest Drive and Diversion Dam, Idaho 21 traffic will be under one-lane, two-way flagger control with a pilot car guiding north- and southbound traffic.
• Between Diversion Dam and the top of Lucky Peak Dam, Idaho 21 traffic will be restricted to two lanes with one lane each serving north-and southbound travel.

Other Traffic Impacts:

• S. Eisenman Road from I-84 to the Factory Outlet
o Closed from 12:50 p.m. to 4:45 p.m.
• S. Eisenman Road from Gowen Road to the Factory Outlet
o Open
• Gowen Road from S. Eisenman Road to Pleasant Valley
o West only from 12:50 p.m. to 4:45 p.m.
• Pleasant Valley Road from Gowen Road to Ten Mile Creek Road
o Closed from 1 p.m. to 4:45 p.m.
• Ten Mile Creek Road from Pleasant Valley Road to S. Cole Road
o Closed from 1:20 p.m. to 4:30 p.m.
• Warm Springs Road from US Highway 21 to Bown Way
o North only from 2 p.m. to 5:40 p.m.
• Bown Way from Warm Springs Road to Boise Avenue
o Expect delays from 2:10 p.m. to 5:45 p.m.
• Boise Avenue from Bown Way to Holcomb Road
o Expect delays from 2:15 p.m. to 5:45 p.m.
• Holcomb Road/Bergeson Street from Boise Avenue to Federal Way
o East only from 2:15 p.m. to 6 p.m.
• Federal Way and S. Capitol Boulevard from Protest Road to University Drive
o Closed from 1:30 p.m. to 6:30 p.m.

Local law enforcement officers and event volunteers will be positioned along the race routes to direct traffic and help keep competitors and motorists safe. In several areas, police will assist motorists, and residents who live along the course with accessing or leaving their homes. Those driving along the bike course may, at times, drive alongside cyclists and are asked to use caution.

ACHD will have staff at their Traffic Management Center to monitor traffic conditions in the area and to adjust signal timing as needed to ensure traffic moves at a steady pace.

Boise Police, Ada County Sheriff’s Department and Boise Motor Escort will be providing escort for this event.

Competitors will start with the swim portion of the race at Lucky Peak’s Barclay Bay, followed by biking 56 miles through east and southeast Boise and surrounding areas to the Boise State University. Participants will then run 13.1 miles, most of which is along the Greenbelt, to the finish line at Julia Davis Park.

The BIKE ROUTE is as follows:

• Begin at Lucky Peak Dam
• West on Idaho 21
• South on Technology Way
• West on Circuit Lane
• South on Memory Road
• West on Federal Way
• North on Eisenman Road
• West on Gowen Road
• South on Pleasant Valley Road
• West on Ten Mile Creek Road
• U-TURN on Ten Mile Creek Road
• North on Pleasant Valley Road
• East on Gowen Road
• South on Eisenman Road
• East on Federal Way
• North on Technology Way
• East on Circuit Lane
• North on Technology Way
• East on Idaho 21
• West on Warm Springs Road
• West on E. Parkcenter Boulevard
• West on Bown Way
• South on E. Boise Avenue
• South on Holcomb Road
• West on Bergeson Street
• North on Federal Way
• Continue on to Capitol Boulevard
• East on University Drive
• The TRANSITION Area will be in the BSU parking lot north of the Brady Street Parking Structure.

The RUN COURSE is as follows:

• Begin at the BSU Parking Lot north of the Brady Street Parking Structure
• South to University Drive
• West on University to Capitol Boulevard
• South on Capitol to Julia Davis Park
• Enter park at Julia Davis Park Drive
• Access Greenbelt
• East on Greenbelt
• Stay right along the Boise River
• Cross Baybrook Footbridge to the south side of the Boise River
• West on Greenbelt
• Continue past BSU
• Cross the Ann Morrison Footbridge
• West to 13th on the Greenbelt
• Return to the north side of the Boise River
• Exit Greenbelt at Anne Frank Memorial
• Join 8th Street
• U-TURN at 8th and Broad Street
• Complete second loop
• END in Julia Davis Park v

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