Sioux Falls, SD, United States · Saturday, May 1, 2027

Fixed Distance 50K

Tuthell 50K

227 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.

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43.5437° N, 96.7280° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 12 hours 14:24 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 Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. More forgiving than 70% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~20 Small. Long stretches with nobody in sight.

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, May

Daytime high 21°C
Night low 9°C
Rainfall Mostly dry
Daylight 14 h 06 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 443 m. Not a forecast.

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 Shoes50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition50 km of self-supported fuelling between aid stations.
  • Hydration VestsFlask capacity for 50 km, without the bounce.
  • HeadlampsA 12 h limit puts you out there after dark.
  • GPS WatchesBattery 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

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Nitecore

UT32

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

$100 ★★★★★ 4.5

Garmin

Enduro 3

Ultra-endurance GPS watch with solar charging and 300+ hour battery in GPS mode.

$900 ★★★★★ 4.8
All gear guides →

Course Notes

The concept is simple, though not easy – you will perform the 0.31-mile loop up and down Tut Hill (grassy part) 100 times. This is roughly 90 feet of elevation gain and 90 feet of elevation loss.

Similar races

Other 50K trail ultras, closest in distance first.