The Underground Circus 100

July 4th 2026
Atlanta, GA
6 Hours | 12 Hours | 24 Hours | 50 Miles | 100 Miles

The Underground Circus 100, which is a no DNF race😊, is being held on our beautiful scenic Atlanta's Silver Comet Trail and will take you 5.0 miles out and 5.0 miles back. The route is fast relatively flat asphalt, and is surrounded by a grass trail, so you can run on either surface; the distance is the same. The trails are beautiful: trees, wooded areas so if you want trail, it's waiting for you. The trail will be open to the public and there will always be someone at the aid station. The race has a small town feel to it as I am up and down the course all day until the last runner finishes. The trail, which runs to Alabama, has plenty of restaurants and Publix, and is close to hotels. You're near historic structures, such as Dr. MLK Jr's house, GA Tech, Spellman and Clark Atlanta College, Mercedes Benz Stadium, and The GA World Congress Center. The Aquarium and Civil Rights Museum and Morris Brown College are within 15 minutes from the race site. The Park is in a suburb of Atlanta (Smyrna) and there is a Racetrack, QT gas station, and restaurants across the street from the trails. This race is perfect for a 1st time ultrarunner who may not be used to staying up all day and night. Our fully stocked aid station will be supplied with cups and sports drink, as well as various snacks, all night soup and pizza; if you have a restricted diet, please bring your items for the race. I love you guys but I will not be making coffee runs, extra batteries etc😀; please come prepared for 36 hours. The RD is on hand the entire time checking in on you. The RD has the final say on DQ. There will be no exceptions on course markings. If you do not cross the timing mat your lap isn't counted. There are many walkers/runners asking questions about what are you doing especially when they saw you running 8 hrs ago and wonder why you're still moving but it keeps you going. Saturdays are busy in Atlanta, especially when it's hot and it's usually 80 degrees during May so sunscreen 😉. There are no sharp turns or non marked trails so no chance of getting lost. Your only job will be to run as much as you want. Remember don't stress about not making cut offs because we can always drop/change you to the timed events if you miss a cut off. This is a challenge but definitely NO STRESS and the RD and volunteers are definitely here to help you. Pacers can be available on request but no one can carry you. We want to see you finish ❤️. All proceeds go to helping the homeless. Please donate by bringing socks, underwear, toothpaste, and toothbrushes. Please and thank you 

AWARDS
100 MILE customized brass buckle with black background with raised lettering!! 50M and under receive finishers awards certificate.

Upcoming Races

Jul 4 2026
6 Hours
Multiple Loop
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface
Jul 4 2026
12 Hours
Out and Back
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface
Jul 4 2026
24 Hours
Out and Back
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface
Jul 4 2026
50 Miles
Out and Back
14:00 Cutoff
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface
Jul 4 2026
100 Miles
5 mile out and back
Out and Back
31:00 Cutoff
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
1 Surface Rating
Paved or very smooth surface

Results

6 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 2 40
05/27/23 No Ultra Finishers
06/04/22 No Ultra Finishers

12 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 3 30
05/25/24 3 31.35 31.79
05/27/23 3 27.84 50.3
06/04/22 1 50

24 Hours

Date Finishers Top Result (F) Top Result (M)
05/24/25 7 80 80
05/25/24 3 62.78
05/27/23 4 72 46.4
06/04/22 4 64.4 45
Date Finishers Top Result (F) Top Result (M)
05/24/25 10 8:01:29 9:59:03
05/25/24 13 11:10:08 10:58:46
05/27/23 1 11:50:00
06/04/22 1 11:51:36
05/08/21 Results Not Available Submit Results
05/11/19 Results Not Available Submit Results
05/12/18 Results Not Available Submit Results
05/13/17 Results Not Available Submit Results
Date Finishers Top Result (F) Top Result (M)
05/24/25 6 34:50:19 27:24:06
05/25/24 10 31:49:10 22:46:00
05/27/23 6 18:07:14
06/04/22 1 32:49:51
05/08/21 Results Not Available Submit Results
05/02/20 Race Cancelled
05/11/19 No Ultra Finishers
05/12/18 Results Not Available Submit Results
05/13/17 Results Not Available Submit Results

36 Hours

Date Finishers Top Result (F) Top Result (M)
05/27/23 1 73.43
06/04/22 2 101

40 Miles

Date Finishers Top Result (F) Top Result (M)
05/27/23 No Ultra Finishers
06/04/22 No Ultra Finishers
Date Finishers Top Result (F) Top Result (M)
05/27/23 1 6:37:00
06/04/22 2 5:07:24
05/08/21 Results Not Available Submit Results
05/11/19 Results Not Available Submit Results

48 Hours

Date Finishers Top Result (F) Top Result (M)
05/27/23 3 74.24 55.68

125 Miles

Date Finishers Top Result (F) Top Result (M)
05/27/23 No Ultra Finishers

150 Miles

Date Finishers Top Result (F) Top Result (M)
05/27/23 No Ultra Finishers

50 KM

Date Finishers Top Result (F) Top Result (M)
05/12/18 Results Not Available Submit Results
05/13/17 Results Not Available Submit Results

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