Races Half marathon · Georgetown, USA
Georgetown to Idaho Springs Half Marathon
Georgetown to Idaho Springs Half Marathon is a hilly half marathon in Georgetown, USA, held each August. A point-to-point course down the Clear Creek Valley from Georgetown Lake to Idaho Springs. It drops about 300 m overall, is gently rolling, and has one hill near the finish. Early August in the Clear Creek Valley is usually mild at the 07:00 start, around 8 to 12°C, warming to about 22 to 27°C, with afternoon thunderstorms possible. A course as hilly as Georgetown to Idaho Springs Half Marathon must be trained for specifically — long-run routes should mimic its climbs and descents.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
August
next: Saturday 14 August 2027
Course
hilly
Half marathon
Conditions
Early August in the Clear Creek Valley is usually mild at the 07:00 start, around 8 to 12°C, warming to about 22 to 27°C, with afternoon thunderstorms possible.
Racing this course well
A point-to-point course down the Clear Creek Valley from Georgetown Lake to Idaho Springs. It drops about 300 m overall, is gently rolling, and has one hill near the finish.
A course as hilly as Georgetown to Idaho Springs Half Marathon must be trained for specifically — long-run routes should mimic its climbs and descents.
Getting a place
Official Georgetown to Idaho Springs Half Marathon site →Checked November 2026
Race day
- Next race
- Saturday 14 August 2027
- Start time
- 07:00
- Time limit
- Course closes at 12:00
The course in numbers
The start is beside Georgetown Lake at about 2,590 m and the finish is in Idaho Springs at about 2,285 m. One hill comes near the finish.
- Layout
- Point-to-point
- Start altitude
- 2,590 m (8,500 ft)
Worth knowing
- The 2027 race is billed as the 49th annual edition.
- The race is run by the Clear Creek Booster Club and supports local students.
- The start line stays open until 08:45.
Getting there
- Nearest airport
- Denver International (DEN)
Pick your goal for Georgetown
Pace charts, weekly structure and timelines for the most common half marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Georgetown to Idaho Springs Half Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Georgetown to Idaho Springs Half Marathon?
- The next Georgetown to Idaho Springs Half Marathon is on Saturday 14 August 2027 in Georgetown, USA. It is held each August.
- Is the Georgetown to Idaho Springs Half Marathon course flat?
- A point-to-point course down the Clear Creek Valley from Georgetown Lake to Idaho Springs. It drops about 300 m overall, is gently rolling, and has one hill near the finish.
- How should I train for the Georgetown to Idaho Springs Half Marathon?
- Match your preparation to Georgetown to Idaho Springs Half Marathon's profile and the August weather, then protect consistency — with RunV Premium you can adapt your plan to fit your week, so one bad week never derails the block.
Not sure what to target? Predict your half marathon time from a recent race →
More half marathon races
Supplements research for this distance
Build for Georgetown — around your actual life
RunV engineers your block backwards from race day in August — and adapts it when training doesn't go to script. You approve every change.
