Ultra Running Hub Atlanta, GA, United States · Saturday, May 29, 2027
Fixed Distance 50 mi
The Underground Circus 50 Mile
239 days away
80 km Distance
not publishedn/a Climbing
4.0 est Grit · Challenging
Calculated from 80 km alone — the organiser has not published an elevation profile. Read 4.0 as a floor, not a verdict.
What the course asks
Time limit 16 hours
12:00 min/km average. Comfortable. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. More forgiving than 63% of 50 mi races. Measured against 472 races of the same distance. Cut-off calculator →
Field size ~3 Tiny. You will run alone for most of it.
DUV results for the 2026 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, May
Daytime high 27°C
Night low 15°C
Rainfall Showers likely
Daylight 14 h 11 m of light
Regional 2001-2020 average for May — NASA POWER, grid elevation 268 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50mi | 3 | Ric Ross · 15:25:13 | — |
| 2025 | 50mi | 10 | Liam Mcguiness · 09:59:03 | Megan Popp · 08:01:29 |
| 2024 | 50mi | 13 | Anthony Gadzi · 11:16:38 | Ashley Nash · 11:10:08 |
| 2023 | 50mi | 1 | Justel Didier · 11:50:00 | — |
| 2023 | 36h | 1 | Jeremiah Castro · 118.174 km | — |
| 2022 | 36h | 2 | Raymond Krolewicz · 162.543 km | — |
| 2022 | 50mi | 1 | — | Laura Foster · 11:51:36 |
| 2019 | 50mi | 2 | — | Aisha Jordan-Johnson · 14:21:11 |
The field shrank 70% between 2025 (10) and 2026 (3). 0% of the 2026 field were women.
DUV results for the 2026 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Course notes
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 80 km of trail.
- Trail Running Shoes 80 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 80 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 80 km, without the bounce.
- Headlamps A 16 h limit puts you out there after dark.
- GPS Watches Battery life first — a 80 km day outlasts most full-GPS modes.
Similar races
Other 50 mi trail ultras, closest in distance first.