16.8 miles
Distance
1,654 ft
Climb
-1,636 ft
Descent
5,044 ft
High Point
16 ft
Altitude change
4,148 ft
Altitude min
4,370 ft
Altitude start
4,386 ft
Altitude end
-24.5%
Grade max
37.9%
Grade min
7 miles
Distance climb
8 miles
Distance down
2 miles
Distance flat

My first time to the area. Thought I would kick things off by doing a big loop of the area. Will update the information here after I ride it today. Cheers

Detailed Description
Spence MTN Big Loop is a 17 mile moderately popular intermediate route located near Klamath Falls Oregon. This mountain bike primary route. This route includes 19 trails. This route climbs 1,654 ft with a max elevation of 5,044 ft then descends -1,636 ft.
Tags

Trail Issues on Route

  • Minor Issue / Yellow: 1 trail (newest: Sep 6, 2025)

Local Trail Association

Local trail association
Klamath Trails Alliance (klamathtrails.org)
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Stats

  • Distance
    17 miles
  • Avg time
    5 hr 2 min
  • Altitude change
    16 ft
  • Altitude min
    4,148 ft
  • Altitude start
    4,370 ft
  • Altitude end
    4,386 ft
  • Climb
    1,654 ft
  • Descent
    -1,636 ft
  • Grade max
    -24.5%
  • Grade min
    37.9%
  • Distance climb
    7 miles
  • Distance down
    8 miles
  • Distance flat
    2 miles

15 Reviews & Comments


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Trails in Route

Details

  • Riding area
  • Primary Activity
    Mountain Bike
  • Other Activities
    • Hike
    • Trail Running
  • Difficulty rating
    Blue
no votes yet
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Trail transparency
  • Singletrack
mtb
trail: Mazama
47
mtb
trail: Old Eagle
43
mtb
trail: Old Eagle
36
mtb
trail: Mazama
105
Spence Mountain | Klamath Falls, OR
mtb
Spence Mountain | Klamath Falls, OR
7:26 | 545 | comments: 0 | favs:
Nov 10, 2021
North Star At Tahoe
mtb
North Star At Tahoe
trail: North Star
0:38 | 308 | comments: 0 | favs: 2
Mar 9, 2012
North Star At Tahoe

Recent Trail Reports Along Route

statustraildateconditiondescription
Queen of the Lake
Jul 29, 2026 @ 11:17am (America/Boise)
Jul 29, 2026
This is definitely a black trail. If you need to know who the queen of the lake is ride this Trail you will find out that it is a spider. There are cobwebs all over. Probably the windy side of the lake lots of bugs who have been caught in their webs my bike was covered, my face was covered my shoes were covered. You get the picture. If you are a lazy spider reading this this is the perfect place to go. I saw no spiders so all of these webs might be abandoned there are more bugs in there than any spider that I would ever want to meet could eat so any lazy spider or perhaps a handicap spider who lost its web making abilities could roam this area and eat like a king, from the queen. Gets Rocky and techie in spots.
Hooligan Trail
Jun 25, 2026 @ 8:04am (America/Los_Angeles)
Jun 25, 2026
IMBA Trail
Jun 25, 2026 @ 8:04am (America/Los_Angeles)
Jun 25, 2026
Old Eagle
May 25, 2026 @ 12:53pm (America/Boise)
May 25, 2026
Dirt was perfect! Trails built with amazing view of lake and mountains. Returned via Shoalwater another well designed trail with interesting features. Nice amount of climb and descent, a few rocks and roots.
Mazama
Sep 6, 2025 @ 3:03pm
Sep 6, 2025
Large tree blocking trail at 2.5 mile mark from Shoalwater
more reports »
  • By GasolineDeath & contributors
  • #19774 - 1,047 views

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