Maryville, TN, United States · Saturday, June 5, 2027

Timed 12 hours

Three Sisters Ultra Festival 12 Hour Run

248 days away

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.

35.7565° N, 83.9705° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~32 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, June

Daytime high 29°C

Night low 18°C

Rainfall Showers likely

Daylight 14 h 28 m of light

Regional 2001-2020 average for June — NASA POWER, grid elevation 424 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	12h	32	Alec Vetrano · 99.137 km	Piper Gray · 99.135 km
2025	12h	22	Alec Vetrano · 88.513 km	Audrey Carter · 102.676 km
2024	12h	29	Alec Vetrano · 93.341 km	Heidi Poore · 80.467 km
2023	12h	23	John Kiser · 96.560 km	Morgan Schaeffer · 77.248 km
2022	12h	16	Brian Vermillion · 85.504 km	Amanda Bowers · 80.467 km
2021	12h	26	Matthew Holappa · 100.584 km	Jennifer Kimball · 80.467 km
2020	12h	20	Ron Wireman · 110.642 km	Heidi Poore · 75.446 km
2019	12h	26	Brian Vermillion · 90.525 km	Francesca Muccini · 80.467 km
2018	12h	20	Nathan Helton · 90.525 km	Lea Mulligan · 80.789 km
2017	12h	12	Hugh Palmer · 85.496 km	Leah Jones · 80.467 km

The field grew 45% between 2025 (22) and 2026 (32). 56% of the 2026 field were women.

DUV results for the 2026 edition (12h) — 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.