St. Regis, MT, United States · Saturday, June 20, 2026

Fixed Distance 50K

Trail Rail Run 50 K

Race completed

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.

47.3005° N, 115.1065° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 13 hours 15:36 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 Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it.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 81% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →

Field size ~34 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, June

Daytime high 19°C

Night low 7°C

Rainfall Mostly dry

Daylight 15 h 56 m of light

Regional 2001-2020 average for June — NASA POWER, grid elevation 1276 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 13 h limit puts you out there after dark.
GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.

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

Adidas

Terrex Agravic Speed Ultra

★★★★★ 4.5

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Salomon

ADV Skin 12

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

$180 ★★★★★ 4.8

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Course Notes

Run the old Milwaukee and Northern Pacific Railroad grades from Mullan, Idaho to St. Regis, Montana near the summer solstice. Gentle grades, beautiful scenery and moderate temperatures combine for an ultra great experience while crossing the Rocky M

Similar races

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