Half Day at the Lake

Race completed

not publishedn/a Distance

not publishedn/a Climbing

not publishedn/a Grit

We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.

42.0411° N, 87.6901° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~5 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (6h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 22°C

Night low 16°C

Rainfall Mostly dry

Daylight 12 h 02 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 181 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	6h	5	Aaron Wolf · 62.120 km	Marina Holter · 61.798 km
2024	6h	2	Johnny Dijohn · 45.657 km	Kelly Duffy · 51.869 km

The field grew 150% between 2024 (2) and 2025 (5). 40% of the 2025 field were women.

DUV results for the 2025 edition (6h) — ranked runners 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 this trail race.

Trail Running Shoes Cushioning on trail that is still there in the last quarter.
Race Nutrition Self-supported fuelling between aid stations.
Hydration Vests Flask capacity without the bounce.
Headlamps A 12 h limit puts you out there after dark.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.