How hilly is the Bob Marshall Trail Races Ultramarathon?
The Bob Marshall Trail Races Ultramarathon is described as rolling.
Bob Marshall Trail Races Ultramarathon
This race edition
- Race date
- Date not confirmed for this distance
- Race timezone
- Timezone not confirmed
- Edition status
- Status not confirmed
Entry options
2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Official event website ↗Data current as of
Decision summary
Bob Marshall Trail Races Ultramarathon at a glance
- Cut-off average pace
- 10:12/km
- Typical conditions
- 65/100
- Evidence depth
- 30 verified facts
8:30:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Source facts available
Route details
Known course facts at a glance
Bob Marshall Trail Races Ultramarathon has known course details for its ultramarathon race. The summary below keeps the focus on what is confirmed for the course.
- Official distance
- 50 km
- Terrain
- Trail, Mixed, Road
- Scenery
- Forest, Countryside, Mountain, Lakeside
Quick answers
What runners ask first
Where does the Bob Marshall Trail Races Ultramarathon route go?
The Bob Marshall Trail Races Ultramarathon route starts at Seeley Creek Nordic Trails, Seeley Lake, MT and finishes at Seeley Creek Nordic Trails, Seeley Lake, MT. Underfoot, expect mix of maintained Nordic ski trails, rugged singletrack and Forest Service roads; no pavement. It passes Seeley Creek Nordic Trails and Bob Marshall Wilderness boundary. Course opens with a 10K on maintained Seeley Creek Nordic Trails, then a roughly 4.5-mile Forest Service road section, then a ~3-mile Wilderness singletrack section paralleling the Bob Marshall Wilderness.
What should runners know on race day for the Bob Marshall Trail Races Ultramarathon?
50K runners are provided drop bags.
Race character
Scenery
- Forest
- Countryside
- Mountain
- Lakeside
Atmosphere
- Wilderness
- Scenic Tour
- Destination
Terrain
- Trail
- Mixed
- Road
- Elevation character
- Rolling
- Technicality
- Moderate
Entry, logistics and records
Entry requirements
- Entry status
- Past event: The listed edition date has passed.
- Cut-off
- 50K runners must complete the first loop by 1:30 pm; overall event cutoff is 6:00 pm.
- Qualification status
- Trail event with no qualifying standard; not a Boston Qualifier.
Race day logistics
- Bag drop
- 50K runners are provided drop bags.
- Medal
- All finishers receive a souvenir medal and lanyard.
Access and course status
- Start
- Seeley Creek Nordic Trails, Seeley Lake, MT
- Finish
- Seeley Creek Nordic Trails, Seeley Lake, MT
Course facts
- Course type
- Laps
- Surface
- Mix of maintained Nordic ski trails, rugged singletrack and Forest Service roads; no pavement.
- Landmarks
- Seeley Creek Nordic Trails, Bob Marshall Wilderness boundary
- Notable features
- Bear spray is required by the Forest Service for all participants in this event
- Distances offered: 5K, 10K, Half Marathon, Marathon, 25K and 50K
- Course opens with a 10K on maintained Seeley Creek Nordic Trails, then a roughly 4.5-mile Forest Service road section, then a ~3-mile Wilderness singletrack section paralleling the Bob Marshall Wilderness
- marathon and 50K runners complete two loops
What are typical race-day conditions?
- 20°CTypical temperature
- 13 kphTypical wind
- 0 mmTypical rainfall
- 65Favourability /100