Soddy-Daisy, TN, United States · Saturday, April 17, 2027

Fixed Distance 100K

Rock/Creek Stillhouse 100 km Race

213 days away
100 km Distance
3,600 m Climbing
10.0 Grit · Elite / extreme
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35.2359° N, 85.1908° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 36 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 19 hours 11:24 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 67% of 100K races. Measured against 208 races of the same distance. Cut-off calculator →
Field size ~18 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (100km) — 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 22°C
Night low 9°C
Rainfall Showers likely
Daylight 13 h 07 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 282 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert
👟 gear

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

By UltraHub Expert
🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail with 3,600 m of ascent.

  • Trail Running Shoes36 m of climb per kilometre — grip and rock protection before cushioning.
  • Race NutritionPast 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration VestsPole attachment and chest-strap stability on steep ground.
  • Trekking Poles3,600 m of ascent to walk up.
  • HeadlampsA 19 h limit puts you out there after dark.

Salomon

Ultra Glide 4

$159.95 ★★★★★ 4.6

Adidas

Terrex Agravic Speed Ultra

★★★★★ 4.5

Spring Energy

Awesome Sauce

Real food gel with 180 calories. Rice-based with natural flavors.

$4 ★★★★★ 4.6

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

LEKI

Ultratrail FX.One

Ultra-light carbon folding poles (135g each) designed for mountain ultra racing.

$200 ★★★★★ 4.6

Nitecore

UT32

Dual-beam trail running headlamp (1100 lumens) with spot and flood beams.

$100 ★★★★★ 4.5
All gear guides →

Course Notes

Out-and-back, runs on the technically challenging single track of the Cumberland Trail. This course has huge climbs and descents into Soddy Creek, Possum Creek, and Rock Creek.

Similar races

Other 100K trail ultras, closest in distance first.