UltraSignup
Official entry
Entries openVerified
Verified Sun, 11 Oct 2026
Enter officiallyEventsFind this location on a map
USARunningMixed100mi · 160.9 km / 100.0 mi12H24H50mi · 80.5 km / 50.0 mi6H
The Underground Circus 100
Smyrna, Georgia, 4625 Camp Highland Rd SE · USA
Next race day
Sat, 29 May 2027
5 distances · see start times below
About The Underground Circus 100
The Underground Circus 100 is a running event in Smyrna, Georgia, 4625 Camp Highland Rd SE, United States. Recorded disciplines include 100mi, 12H, 24H, 50mi, 6H. The listed surface is mixed. The next listed date is 29 May 2027. Check the organiser's information for entry and race-day arrangements.
Dates, starts & entry
Times are local to the race. Select the entry route for your distance.
- Official entry
6H
Sat, 29 May 2027
Start time not yet confirmed
Entries open
Start time needs confirmation: entry panel says 06:00; FAQ says all races start 04:00. Fixed-time race; total distance varies.
Edition source - Official entry
12H
Sat, 29 May 2027
Start time not yet confirmed
Entries open
Start time needs confirmation: entry panel says 06:00; FAQ says all races start 04:00. Fixed-time race; total distance varies.
Edition source - Official entry
24H
Sat, 29 May 2027
Starts 04:00 EDT
Entries open
Fixed-time race; total distance varies.
Edition source - Edition sourceOfficial entry
50mi · 80.5 km / 50.0 mi
Sat, 29 May 2027
Starts 04:00 EDT
Entries open
- Edition sourceOfficial entry
100mi · 160.9 km / 100.0 mi
Sat, 29 May 2027
Starts 04:00 EDT
Entries open
Location & race day
Listed venue / area
4625 Camp Highland Rd SE, Smyrna, GeorgiaUSA
Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.
About the race
Ultras and timed races on the Silver Comet Trail at Smyrna.
- Surface:
- Mixed
Ways to enter
Compare the listed booking routes. Verified links show when they were checked.
Sat, 29 May 2027
Third-party prices, booking fees, allocations and refund terms can differ. Confirm the final details with the provider before paying.
Results
Public-figure or athlete-approved ATHRECS results, plus verified organiser links.
No verified results links have been added yet.
Past races
None listed yet.
More running nearby
Fri
16
Oct
2026
Mines of Spain 100
Dubuque, IowaUSA
Louis Murphy Park
100K / 100mi· Trail
One-hundred-mile and one-hundred-kilometre races on the trails of the Mines of Spain Recreation Area.
Fri
16
Oct
2026
Pony Express Trail Run
Faust, UtahUSA
Lookout Campground, west of Faust
100mi / 50mi· Trail
Fifty-mile and one-hundred-mile races on the historic Pony Express dirt road route in western Utah.
Sat
17
Oct
2026
Stronger Together DV Awareness 5k
Clayton, North CarolinaUSA
325 McCullers St
1mi / 5K· Unspecified
Stronger Together DV Awareness 5k in Clayton, United States.
Sat
17
Oct
2026
Sat
17
Oct
2026
Sat
17
Oct
2026
Red, White & Run
Halifax, North CarolinaUSA
13763 NC-903
5K· Unspecified
Red, White & Run in Halifax, United States.
Sat
17
Oct
2026
Sat
17
Oct
2026
AmeriHealth Atlantic City Marathon
Atlantic City, New JerseyUSA
10K / 5K / Half / Marathon· Road
AmeriHealth Atlantic City Marathon in Atlantic City.