Illinois City, IL, United States · Saturday, April 17, 2027

Fixed Distance 50 mi

Loud Thunder 50 Mile Race

199 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.

41.3975° N, 90.8996° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 14 hours 10:30 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. About average for a 50 mi. Measured against 471 races of the same distance. Cut-off calculator →

Field size ~33 Small. Long stretches with nobody in sight.

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, April

Daytime high 17°C

Night low 4°C

Rainfall Showers likely

Daylight 13 h 22 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 213 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	50mi	33	Walker Day · 07:39:55	Renee White · 09:53:39
2025	50mi	39	Nate Truckenbrod · 07:55:20	Ellyse Ungs · 09:53:59
2024	50mi	40	Nate Truckenbrod · 07:14:41	Renee White · 08:07:16
2023	50mi	25	Brett Rosauer · 07:57:36	Renee White · 09:24:39
2022	50mi	26	Tom Rauen · 08:11:47	Tiffany Gunhus · 11:50:19
2021	50mi	15	Collin Buck · 08:05:48	Jaclyn Noshay · 08:42:51

The field shrank 15% between 2025 (39) and 2026 (33). 21% 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.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

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 14 h limit puts you out there after dark.
GPS Watches Battery life first — a 80 km day outlasts most full-GPS modes.

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Salomon