Logo

The Underground Circus 100

Smyrna, United States • 24 May 2025

The Underground Circus 100 is an ultramarathon event taking place on Atlanta's scenic Silver Comet Trail, featuring distances of 100 miles, 50 miles, and a 24-hour challenge. The course is relatively flat and fast, with options to run on asphalt or grass trails. This race is designed to be beginner-friendly, ensuring no participants will experience a DNF (Did Not Finish).

Aid stations will be available throughout the event, providing snacks and refreshments. The race promotes community involvement, with proceeds supporting homeless assistance. Participants can also earn unique awards, including customized buckles for the 100-mile finishers. Visit the organization's website for the most recent information.

United States Georgia Smyrna

Race information

Registration Facebook
24 hr
24hr
100 mi
100 Miles
50 mi
50 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Red Top Rumble

Cartersville - 25 mi from Smyrna

The Red Top Rumble is an annual 11.5-mile trail race held at Red Top Mountain State Park in Cartersville, GA. This event, organized by GUTS, features a scenic course with winding wooded trails and views of Lake Allatoona. Participants are encouraged to register in advance, as there is no race day re..

Yeti 7/11 Hour Endurance Run

Lithia Springs - 10 mi from Smyrna

The Yeti 7/11 Hour Endurance Run is a unique trail running event taking place at Sweetwater Creek State Park in Lithia Springs, Georgia. Participants can choose between a 7-hour or 11-hour run, completing a scenic 4-mile loop that features a mix of single and double track trails, hills, and flat sec..

Canebrake 200 Miler

Atlanta - 11 mi from Smyrna

The Canebrake 200 Miler is an exciting ultra-running event taking place in Sweetwater Creek State Park, Atlanta, GA, from March 24 to 28, 2025. Participants can choose to tackle the challenging 200-mile course, which features a mix of compacted dirt trails and scenic views, or opt for the "200 Curio..

Dirty Spokes Iron Hill

Cartersville - 25 mi from Smyrna

The Dirty Spokes Iron Hill event is a trail running race held at Red Top Mountain State Park in Cartersville, Georgia. Participants can choose between two distances: 7.5 miles or 3.8 miles. The race is designed to provide a scenic off-road experience, featuring single and double track trails.Registr..

Loop The Hooch 50K

Suwanee - 28 mi from Smyrna

Loop The Hooch is a running event featuring a 50K, 25K, and a team relay race, taking place at Chattahoochee Pointe Park in Suwanee, Georgia. The course consists of a flat and fast 5-kilometer gravel/dirt loop along the scenic Chattahoochee River, making it ideal for both seasoned runners and beginn..

Bronze Dragonfly 30 Hour Ultra

Piedmont Heights - 10 mi from Smyrna

...

The Bronze Dragonfly 30 Hour Ultra is a unique running event taking place in Savannah, GA, designed to raise awareness for mental health issues. Participants can choose from various race durations, including 30, 24, 12, 6, and 3 hours, on a certified 1.4-mile course that features a mix of paved and ..