Crystal Lake, IL, United States · Saturday, April 17, 2027

Fixed Distance 50K

Earth Day 50k

199 days away

50 km Distance

not publishedn/a Climbing

2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

42.2411° N, 88.3162° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~72 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 edition (50km) — 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 15°C

Night low 3°C

Rainfall Showers likely

Daylight 13 h 24 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 231 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	50km	72	Andrew Douglas · 04:33:02	Denise Mckinley · 04:54:18
2025	50km	68	Ben Schluckebier · 04:07:55	Rachel Reyes · 04:52:10
2024	50km	93	Brandon Queen · 04:13:58	Nikki Criscuolo · 04:52:39
2023	50km	80	Reese Slobodianuk · 03:43:38	Brianna Bower · 05:39:18
2022	50km	88	Ryan Richert · 04:10:08	Suzie Brashler · 05:02:06
2021	50km	101	Garrett Nelson · 04:24:23	Becky Patch · 05:40:30
2019	50km	150	Jeremiah Gerardy · 04:20:36	Meghan Kennihan · 04:47:43
2018	50km	124	Chris Ragni · 04:25:05	Meghan Kennihan · 04:41:57
2017	50km	84	Coree Woltering · 04:03:58	Sarah Overpeck · 04:46:32
2016	50km	101	Mark Thompson · 04:01:55	Elissa Ballas · 04:20:30

The field grew 6% between 2025 (68) and 2026 (72). 32% of the 2026 field were women.

DUV results for the 2026 edition (50km) — 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 50 km of trail.

Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 50 km, without the bounce.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

La Sportiva

Prodigio Pro

RunRepeat found the La Sportiva Prodigio Pro to have a secure, locked-in fit due to its premium upper, and also praised the shoe's energetic ride, particularly…

$225 ★★★★★ 4.6

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Skratch Labs