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Course Highlights
The Slacker Half Marathon earns its name — runners start at the base of Loveland Ski Area at a breathtaking 10,630 feet elevation and ride a net-downhill course all the way to Georgetown at approximately 8,400 feet, losing nearly 2,200 feet over 13.1 miles. The course is a thrilling mix of dirt and paved roads, guiding participants through pristine alpine wetlands and wildflower meadows, past natural waterfalls, dramatic views of the Continental Divide, and through remnants of Colorado’s historic 19th-century silver mining era. The route follows the path of the old Argentine Central Railroad, adding historical character to every mile.
Race Details
The 2026 race is on Saturday, June 27, with a 7:30 AM start. In addition to the Half Marathon, participants can run the 4-Mile fun race or enter as a relay team. There is no race-day registration — all participants must register in advance. The finish line in Georgetown’s picturesque Victorian downtown is followed by post-race festivities and locally crafted beer. The race welcomes walkers and is open to youth competitors as well as military veterans at discounted rates.
Why Runners Love It
Few races in the world offer the pure exhilaration of running downhill for 13.1 miles through high-alpine scenery at over 10,000 feet. The Slacker sells out reliably each year because the experience is truly unique — the cool mountain air, the scenery, and the net-downhill PR potential make it a bucket-list race for Colorado runners. Post-race, Georgetown’s 19th-century architecture provides a perfect backdrop for celebration.
Race Weekend Tips
The high starting elevation (10,630 feet) demands respect — if you live at lower elevations, arrive in Colorado 2–3 days early to acclimate. Temperatures at the start can be in the low 40s°F or even below freezing in late June at altitude, while the finish in Georgetown may be in the 60s°F. Dress in layers you can shed. The course also features exposed alpine sections where afternoon thunderstorms can develop, but the 7:30 AM start typically gets runners down before weather builds.
Register
Registration opens in late fall/winter at slackerhalfmarathon.com via RunSignup. This race sells out — register as soon as registration opens.
Georgetown, Colorado United States
Course Highlights
The Slacker Half Marathon earns its name — runners start at the base of Loveland Ski Area at a breathtaking 10,630 feet elevation and ride a net-downhill course all the way to Georgetown at approximately 8,400 feet, losing nearly 2,200 feet over 13.1 miles. The course is a thrilling mix of dirt and paved roads, guiding participants through pristine alpine wetlands and wildflower meadows, past natural waterfalls, dramatic views of the Continental Divide, and through remnants of Colorado’s historic 19th-century silver mining era. The route follows the path of the old Argentine Central Railroad, adding historical character to every mile.
Race Details
The 2026 race is on Saturday, June 27, with a 7:30 AM start. In addition to the Half Marathon, participants can run the 4-Mile fun race or enter as a relay team. There is no race-day registration — all participants must register in advance. The finish line in Georgetown’s picturesque Victorian downtown is followed by post-race festivities and locally crafted beer. The race welcomes walkers and is open to youth competitors as well as military veterans at discounted rates.
Why Runners Love It
Few races in the world offer the pure exhilaration of running downhill for 13.1 miles through high-alpine scenery at over 10,000 feet. The Slacker sells out reliably each year because the experience is truly unique — the cool mountain air, the scenery, and the net-downhill PR potential make it a bucket-list race for Colorado runners. Post-race, Georgetown’s 19th-century architecture provides a perfect backdrop for celebration.
Race Weekend Tips
The high starting elevation (10,630 feet) demands respect — if you live at lower elevations, arrive in Colorado 2–3 days early to acclimate. Temperatures at the start can be in the low 40s°F or even below freezing in late June at altitude, while the finish in Georgetown may be in the 60s°F. Dress in layers you can shed. The course also features exposed alpine sections where afternoon thunderstorms can develop, but the 7:30 AM start typically gets runners down before weather builds.
Register
Registration opens in late fall/winter at slackerhalfmarathon.com via RunSignup. This race sells out — register as soon as registration opens.