Georgetown to Idaho Springs Half Marathon

Saturday, August 10, 2024 • Georgetown, CO • Course Map

Set in the Rocky Mountains just outside Denver, Colorado, the Georgetown to Idaho Springs Half Marathon takes runners through what is certainly some of the most scenic road race terrain anywhere in the United States.

It’s also challenging for runners thanks to its high altitude course, which begins at Georgetown Lake (on the frontage road just off Interstate 70) at an elevation of 8,500 feet above sea level, and then descends by the end of the race to 7,500 feet at Idaho Springs.

Participants run a two-mile loop through Georgetown and then make their way along the frontage road to Idaho Springs, down nearby Clear Creek Canyon, and encounter several uphills and downhills along the way.

While much of the course is paved surfaces, one two-mile stretch is run across rocky dirt roads on the way to the finish near Clear Creek Football Field in Clear Creek Valley, in nearby Idaho Springs.

Along the race route, runners will get ample views of some of Colorado’s most scenic mountain peaks and valleys.

Located about 50 miles west of Denver by car, the stretch between Georgetown and Idaho Springs is home to plentiful skiing resorts, streams, hiking and biking trails as well as the Royal Gorge Route Railroad, a popular tourist attraction that draws more than 100,000 riders every year for its two-hour tour of Colorado’s Royal Gorge.

Race Weather & Climate

While the race takes place just as summer is hitting its peak across much of the rest of the U.S., weather conditions are still mild in this high-altitude Rocky Mountain town just to the west of Denver.

On race day (Aug. 10), the average low is 42ºF and the average high is 74ºF.

Past Results

Course Map

See the race route map for the Georgetown to Idaho Springs Half Marathon here.

Starting Time

7:00 AM (small wave start)


$60 – $100


To reserve your spot in the 2024 running of the Georgetown to Idaho Springs Half Marathon, visit the event website below.

Official Race Website


Ever run in the Georgetown to Idaho Springs Half Marathon? Share your impressions here, or post your review in the Comments below.

See more races — Colorado, August

4 comments… add one
  • James Dill August 22, 2018, 12:36 pm

    Where are 2018 results?

  • Jorge L Aquino February 7, 2018, 10:37 am

    Would love to do this 1/2 marathon, I walk them… I jst did the 1/2 in Islandmorda, Fl… time of 3:28… let me know if that is acceptable time for me to walk it. I did the Denver 1/2 in September 2016…Thank you
    Jorge L Aquino

    • Carol April 9, 2018, 2:29 pm

      Hello Jorge,
      Last year 21 participants finished after 3 hr 20 min, the last crossed the finish line at 4 hr 24 min. However, most of the post-race celebration wraps up at about 12:00, so later finishers have a quiet reception. As a race volunteer, Booster Club member, and parent of Clear Creek School District students, I assure you that all participants are loved! We make sure every participant gets to the finish. Just be careful of the altitude as we are a bit higher than Denver. And a bit drier than Florida! I hope to see you on course this year!


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