Lost Jack Creek
- 1.6 mi
- distance
- 413 ft
- climb
- May–Oct
- best months
Is Lost Jack Creek open right now?
Alert in the area
The Forest Service lists 5 alerts for Flathead National Forest.
Camp Creek Fire Updated Trail Closure
Agency alert covering Flathead National Forest · Order 01-10- · USFS · Flathead National Forest
FK&L Area Closed to Public Access Starting July 22, 2026
Agency alert covering Flathead National Forest · Order 01-10- · USFS · Flathead National Forest
Trail 800 Tally-Ashely Closure
Agency alert covering Flathead National Forest · Order 01-10- · USFS · Flathead National Forest
Ryan Creek Occupancy and Use Order
Agency alert covering Flathead National Forest · Order 1-10- · USFS · Flathead National Forest
Logan Creek Hoke Creek Closure
Agency alert covering Flathead National Forest · Order 01-10- · USFS · Flathead National Forest
As of · Source: USFS · Flathead National Forest. Agencies don't list every closure — check before you go.
Lost Jack Creek is a mountain biking route in the Spotted Bear Ranger District of Flathead National Forest in northwest Montana, about 1.6 miles long with a total elevation gain of 413 feet. The trail climbs from a low point of 4,012 feet to a high of 4,429 feet, and the Forest Service manages the surrounding land. Summer is the most comfortable time to ride. Typical averages from the nearby Swan Lake weather station show July and August highs around 82°F with lows in the upper 40s, while winter highs stay near freezing. That station sits well below the trail, so temperatures on the higher part of the route run cooler. Several other rides and outings lie close by. Meadow Cr Airstrip Shortcut is under a mile away, and Harrison Creek and Meadow Creek Gorge are each about a mile off. The South Fork Flathead River offers canoeing within about a mile.
Local outfitters
- Montana Basecamp47 mi away
Not on Roamze yet. Their page has how to reach them.
Best time to go · May–Oct
Best time to visit Lost Jack Creek
Best months: May–October. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
31° / 18°
Feb
36° / 18°
Mar
45° / 26°
Apr
54° / 31°
May
64° / 38°
Jun
71° / 44°
Jul
82° / 48°
Aug
82° / 46°
Sep
70° / 39°
Oct
55° / 32°
Nov
39° / 25°
Dec
30° / 20°
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Swan Lake, MT, 21.3 mi away at 3,100 ft. The station sits about 1,300 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Keep exploring — more rides worth the drive
Cabin Creek
~47 min drive
Cabin Creek is a 6.09-mile trail at Elk Hill, Montana with 398 ft of elevation gain.
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Meadow Cr Airstrip Shortcut
~1 min drive
0.16-mile trail at Meadow Creek Trail Head with 10 ft elevation gain
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Meadow Creek Gorge
~2 min drive
0.44-mile trail in Montana with 115 ft elevation gain
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Wagon Trail AT Meadow
~2 min drive
0.25-mile trail at Meadow Creek Trail Head with 98 ft elevation gain
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Meadow Mtn.
~3 min drive
3.34-mile trail in Montana's Meadow Creek Trail Head system, 3,321 ft elevation gain
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Cliff By-Pass
~3 min drive
0.24-mile by-pass trail near cliffs in Montana's Meadow Creek Trail Head system.
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Mid Creek Take-Out
~5 min drive
0.05-mile trail in Meadow Creek Trail Head, Montana
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Main South Fork
~18 min drive
22.89-mile trail at Meadow Creek Trail Head with 2,357 ft of elevation gain
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Gildart Flats
~36 min drive
Gildart Flats is a 4.2-mile mountain bike trail in Montana.
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Cabin Creek Admin Spur
~44 min drive
0.25-mile trail in Elk Hill with 37 ft elevation gain
Map and trail data © OpenStreetMap contributors