Georgetown to Idaho Springs Half Marathon 2021 - SOLD OUT

1130 Miner St, Idaho Springs, CO 80452, USA

Georgetown to Idaho Springs Half Marathon 2021 - SOLD OUT

1130 Miner St, Idaho Springs, CO 80452, USA




GTIS Half Marathon is back in person for 2021!  

...and we can't wait to see you!

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.

While there will be some changes to our traditional event due to COVID, one thing hasn't changed - the beautiful Colorado scenery!  At this time, we anticipate facial coverings will be required in all areas of the event except for while on the race route.  Participants will be expected to wear a mask up to the start line, once across the start line, it is at their discretion to remove their mask.  We encourage participants to be respectful of those around them, most especially around our amazing volunteers that are out there supporting your efforts!

This is Colorado at its best!

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


Start Time

COVID mitigation policies will be in effect.  For the start line, this means small groups, socially distanced, will start every 15 minutes.  YOU get to select your start time during registration.  These times will be strictly adhered to, please plan your arrival accordingly.

7:00 a.m. First wave start

7:15 a.m. Second wave start

...this will continue every 15 minutes.  Wave capacities are limited.  Encourage friends and family to sign up along with you so that you can all start together.  

*Wave times and capacities are subject to change based on state and local guidelines.

**The course will close at 1PM, please keep this in mind when selecting your start wave time.   

Run Perks

Custom finisher medal, great shirt, fresh mountain air, beautiful scenery, and a fun post-event celebration (on-the-go COVID style finish line 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 most up to date information for parking and shuttles can be found on the race info page of the event website (

The first shuttle(s) will leave Idaho Springs at approximately 6:15AM.  Please plan accordingly.

We usually stress arriving EARLY - but this year, we ask that you arrive timely...we are discouraging gathering (in line for the shuttles, near the start line, etc).  The shuttles will continue running to the start area throughout the morning until approximately 9:30.  The bus trip itself is about 20 minutes.

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

  • Saturday, August 7th, from 10am - 5pm
  • Sunday, August 8th, from 11am-5pm

Advance Pickup in Idaho Springs at the Buffalo Restaurant/Westbound and Down (1617 Miner Street)

  • Friday, August 13th, between 11:00 am and 7:00 pm

Pickup at the Start Line in Georgetown on race morning

  • starting at 6:30am and continuing until the start of the final wave.

Learn more at

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 4th 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