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Particularly Special Place
Top Trail Running Routes
Location 
Recommended Routes, Photos, & More
Difficult
Rim-to-Rim-to-Rim (R2R2R)
47.5 mi 76.5 km • 10,919' Up 3328.07 m Up • 10,919' Down 3328.18 m Down
Grand C…, AZ
Difficult
Four Pass Loop
27.1 mi 43.6 km • 7,265' Up 2214.42 m Up • 7,266' Down 2214.53 m Down
Snowmas…, CO
Intermediate/Difficult
Monarch Lake to Crater Lake
14.9 mi 24.0 km • 2,017' Up 614.74 m Up • 2,017' Down 614.7 m Down
Granby, CO
Difficult
Franconia Ridge Loop
8.3 mi 13.4 km • 3,566' Up 1086.87 m Up • 3,564' Down 1086.35 m Down
Lincoln, NH
Difficult
Boulder Skyline Traverse
17.3 mi 27.9 km • 5,214' Up 1589.22 m Up • 5,282' Down 1610.04 m Down
Superior, CO
Difficult
High Lonesome Loop
15.7 mi 25.2 km • 3,162' Up 963.89 m Up • 3,162' Down 963.86 m Down
Nederland, CO
Difficult
Sky Pond
8.3 mi 13.3 km • 2,000' Up 609.68 m Up • 1,999' Down 609.26 m Down
Estes Park, CO
Difficult
South Kaibab/Bright Angel Loop
21.6 mi 34.7 km • 4,968' Up 1514.22 m Up • 4,978' Down 1517.24 m Down
Grand C…, AZ
Difficult
Enchantments Traverse
19.1 mi 30.8 km • 4,556' Up 1388.81 m Up • 6,674' Down 2034.11 m Down
Leavenw…, WA
Difficult
Linville Gorge Wilderness Loop
21.9 mi 35.2 km • 4,723' Up 1439.6 m Up • 4,722' Down 1439.31 m Down
Glen Al…, NC
Difficult
Pawnee-Buchanan Loop
26.5 mi 42.6 km • 6,632' Up 2021.41 m Up • 6,615' Down 2016.24 m Down
Nederland, CO
Difficult
Bear Peak Out and Back
5.7 mi 9.2 km • 2,541' Up 774.37 m Up • 2,540' Down 774.25 m Down
Boulder, CO
Intermediate
Emerald Lake
3.3 mi 5.4 km • 661' Up 201.34 m Up • 651' Down 198.3 m Down
Estes Park, CO
Intermediate/Difficult
Grinnell Glacier
10.3 mi 16.6 km • 1,774' Up 540.61 m Up • 1,777' Down 541.59 m Down
Swiftcu…, MT
Intermediate/Difficult
Mt. Tammany Summit
3.4 mi 5.5 km • 1,151' Up 350.73 m Up • 1,182' Down 360.36 m Down
Strouds…, PA
Difficult
Longs Peak - Keyhole Route
14.0 mi 22.5 km • 5,241' Up 1597.49 m Up • 5,231' Down 1594.51 m Down
Estes Park, CO
Difficult
Old Rag Loop
8.9 mi 14.3 km • 2,362' Up 719.92 m Up • 2,359' Down 718.89 m Down
Stanley, VA
Intermediate/Difficult
Lake Solitude
14.2 mi 22.8 km • 2,246' Up 684.47 m Up • 2,246' Down 684.46 m Down
Jackson, WY
Difficult
ERL- Eagle Rock Loop
25.5 mi 41.0 km • 2,505' Up 763.42 m Up • 2,511' Down 765.37 m Down
Dierks, AR
Difficult
Vernal and Nevada Falls Loop
6.2 mi 10.0 km • 1,999' Up 609.27 m Up • 1,998' Down 608.87 m Down
Yosemit…, CA
Difficult
Bright Angel Trail Out-and-Back
16.0 mi 25.7 km • 4,366' Up 1330.9 m Up • 4,367' Down 1331.07 m Down
Grand C…, AZ
Difficult
Alum Cave - Cliff Top Out and Back
10.7 mi 17.3 km • 2,773' Up 845.09 m Up • 2,773' Down 845.09 m Down
Gatlinburg, TN
Intermediate/Difficult
Observation Point
6.7 mi 10.8 km • 2,131' Up 649.48 m Up • 2,130' Down 649.21 m Down
Springdale, UT
Intermediate/Difficult
Fairyland Loop
8.1 mi 13.1 km • 1,460' Up 444.86 m Up • 1,458' Down 444.26 m Down
Panguitch, UT
Intermediate/Difficult
Highline to The Loop
11.7 mi 18.8 km • 1,183' Up 360.66 m Up • 3,554' Down 1083.33 m Down
Red Roc…, MT
Intermediate/Difficult
Skyline Trail
5.3 mi 8.6 km • 1,493' Up 454.98 m Up • 1,485' Down 452.66 m Down
Eatonville, WA
Intermediate/Difficult
Section 16/Palmer Loop
5.9 mi 9.6 km • 1,287' Up 392.19 m Up • 1,288' Down 392.48 m Down
Manitou…, CO
Intermediate
Queens Garden Navajo Loop Trail
3.0 mi 4.8 km • 615' Up 187.42 m Up • 615' Down 187.42 m Down
Panguitch, UT
