FS 661
Karst Loop · Montana
0.4 mi
Distance
...
Net Elevation
4 min
Est. Time
Peak Elevation
...
Difficulty
Green Circle
0.4 mi
Distance
...
Net Elevation
4 min
Est. Time
...
Peak Elevation
Green Circle
Difficulty
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Weather outlook
ClearNo significant precipitation expected.
Little rain is indicated. Shaded or poorly drained sections may still be wet.
The week looks mostly favorable for riding, with no major moisture signal in the forecast.
Forecast window
Wednesday
a high near 53°F, little expected rain, 1% rain chance, winds near 16 mph
Weather-based estimate. Always check local closures and posted trail conditions before riding.
Forecast data via Open-Meteo. Forecast date: .
About This Trail
FS 661 is a 0.4-mile mountain bike trail near Karst Loop, Montana. RidePal marks it as a green circle trail. Surface: dirt. Listed stats: an estimated ride time of 4 min.
Mountain Biking in Karst Loop
Karst Loop is one of the mountain biking hubs in Montana, with mapped trail coverage on RidePal. Use FS 661 as a starting point to compare nearby routes by distance, difficulty, surface, elevation profile, and ride time.
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Trail Details
Surface
Dirt
Technical Rating
Green Circle
Trail Reviews
Community ratings and recent trail conditions
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Mountain Bike Trails Near Karst Loop
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FS 661 FAQ
Where is FS 661?
FS 661 is a mountain bike trail near Karst Loop, Montana. RidePal maps the route, trail stats, photos, reviews, and nearby rides for this area.
How difficult is FS 661?
FS 661 is 0.4 miles long, rated green circle, with a dirt surface, with an estimated ride time of 4 min. Check the map and recent conditions before riding.
What is the weather outlook for FS 661?
Weather forecast for 2026-11-11: No significant precipitation expected. Little rain is indicated. Shaded or poorly drained sections may still be wet. Weather-based estimate. Always check local closures and posted trail conditions before riding.
What other mountain bike trails are near FS 661?
Nearby RidePal trail pages in Karst Loop include Hidden Lakes Trail, Storm Castle Creek Trail, Rat Lake Trail, The Last Waltz, Jacob's Ladder. Use the nearby trails section to compare distance, difficulty, and route style.
How can I update information for FS 661?
Use the RidePal contribution portal from this page to submit corrections, photos, reviews, or route updates for FS 661.
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