42nd Annual Georgetown to Idaho Springs Half Marathon

1130 Miner St, Idaho Springs, CO 80452, USA

42nd Annual Georgetown to Idaho Springs Half Marathon

1130 Miner St, Idaho Springs, CO 80452, USA


The GTIS Half is a Colorado Runner's "Must-Do!" 

Enjoy a breathtaking view along Clear Creek as you traverse a scenic and gently rolling mountain course that winds down the Clear Creek Valley. Start in Georgetown where the elevation is at 8,500 feet, and gradually run along the frontage road that runs parallel to, but well away from I-70. Arrive in Idaho Springs at an elevation of 7,500 feet at the finish.

Enjoy a post-race celebration at Clear Creek football field in Idaho Springs with vendor booths, refreshments, finisher medals, award ceremony, oh and gorgeous Colorado Mountain scenery.

This is Colorado at its best!

"By far one of the most beautiful runs I have ever done" - participant


Start Time

8:00 a.m. (plan to be at the starting line at least 30 minutes prior to the start)

Run Perks

Custom finisher medal, great shirt, fresh mountain air, beautiful scenery, and a fun post-event celebration.


Race start is in Georgetown, next to Georgetown Lake on the frontage road. The race finishes in Idaho Springs at 12th and Miner St.

The post-race celebration is on the Clear Creek football field in Idaho Springs, there are a number of exits along I-70 where your fans can view the race.


The most up to date information for parking and shuttles can be found on the race info page of the event website (https://www.gtishalf.com).

Arrive early!

You have several opportunities to pick up your race bib and materials:
Advance Pickup at Runners Roost Lakewood

  • Saturday, August 1, between 11:00 am - 5:00 pm or
  • Sunday, August 2 between 11:00 am and 5:00 pm

Advance Pickup in Idaho Springs at the Buffalo Restaurant (1617 Miner Street)

  • Friday, August 7 between 11:00 am and 8:00 pm

Pickup at the Start Line in Georgetown on race morning

  • between 6:00 am and 7:30 am

Learn more at www.gtishalf.com

Colorado Mountain Half Series

We all love a Colorado original and we certainly love the beauty and tranquility of our rocky mountains. Three of Colorado’s original & most beloved half marathons-Estes Park Half Marathon, Georgetown to Idaho Springs & Ned * Ned– have joined together for the 3rd annual Colorado Mountain Half Series.

Join and save on all three events and get a custom special finishers medal, fun perks, and you earn points towards overall and age group awards.

Learn more at Colorado Mountain Half Series Website