North Dandalup, WA, Australia · Sunday, December 20, 2026

Fixed Distance 50K

Six Inch Trail 46 km Marathon

108 days away
46 km Distance
not publishedn/a Climbing
2.3 est Grit · Entry level

Calculated from 46 km alone — the organiser has not published an elevation profile. Read 2.3 as a floor, not a verdict.

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32.5173° S, 115.9672° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~211 Large. Rarely out of sight of another runner.

DUV results for the 2025 edition (46km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 31°C
Night low 14°C
Rainfall Dry — rain unlikely
Daylight 14 h 17 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 255 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 46 km of trail.

  • Trail Running Shoes 46 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 46 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 46 km, without the bounce.
  • GPS Watches Battery life first — a 46 km day outlasts most full-GPS modes.

Adidas

Terrex Speed Ultra

★★★★★ 4.5

La Sportiva

Prodigio Pro

$225 ★★★★★ 4.6

Spring Energy

Awesome Sauce

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

$4 ★★★★★ 4.6

Salomon

ADV Skin 12

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

$180 ★★★★★ 4.8

Suunto

Vertical

Titanium GPS watch with solar charging, offline maps, and 140-hour GPS battery.

$630 ★★★★★ 4.5
All gear guides →

Course Notes

The race is held on the Munda Biddi trail, on a 46km course from North Dandalup to Dwellingup in the South West of Western Australia, about 80km South of Perth.

Similar races

Other 50K trail ultras, closest in distance first.