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2.4 miles
Distance
18 ft
Climb
-1,611 ft
Descent
00:19:33
Avg time
-1,593 ft
Altitude change
1,278 ft
Altitude min
2,883 ft
Altitude max
2,870 ft
Altitude start
1,280 ft
Altitude end
-12.6%
Grade
-36.3%
Grade max
10.6%
Grade min
295 ft
Distance climb
2 miles
Distance down
807 ft
Distance flat
00:19:33
Avg time
Thrillium Details
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Activities
- Mountain Bike
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Riding AreaYacolt Burn State Forest
Battle Ground, Washington -
Difficulty Rating
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Voted DifficultyBlack Diamond (1 vote)
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Local Popularity90 in Mountain Biking
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Global Ranking#1412 in Mountain Biking
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Trail TypeSingletrack
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Bike TypeDH, AM
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DirectionDownhill PrimaryPopular Direction Shown
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Physical RatingHard
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Trail VisibilityAlways easy to follow
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SeasonYear Round, Snow closures do exist.
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Dogs AllowedYes
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eBike Allowed
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TTFs on TrailBerm, Jump, Rock Garden
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Ride in RainYes
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Year Opened2012
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Land Owner
Thrillium is one of the Pacific Northwest's premier DH trails. It features high speed berms and many large tabled jumps that "intermediate" skilled riders can roll. It is a popular trail to shuttle, but the top can also be accessed from the Yacolt Burn TH parking area. Note that during winter the gate 300' below the lot is locked. The trail will not be closed, but vehicle access is prohibited to the lot.
Access Info
Google Map URL https://goo.gl/maps/BZp6s
Disclaimer
The trail invites speed so riders are encouraged to make the first descent with caution and thoroughly scout all features.
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 14 rides
- 21 miles average
6 Months
- 45 rides
- 17 miles avg distance
All
- 331 rides
- Last: Jun 29, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Thrillium Trail Reports
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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
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- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
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- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
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Directions to thrillium trailhead
(45.722270, -122.313710)
Photos
250 more »
Routes with this trail
★ 5.0 • 45 miles • 9,258 ft • 12 • Loop •
This is a tough route that I experimented with, failing after the first day as it was dumping rain and our...
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21 miles • 4,809 ft • 11 •
Trail Products
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Nearby Trails
- Spur 56 ft
- Aaron's Climbing Trail 1,142 ft
- L1510 Road 1,824 ft
- Ross' Grade 1,998 ft
- L1050 Road 2,041 ft
Yacolt Burn State Forest
- By northwestdhdad EMBA-SW & contributors
- #3333 - 47,032 views
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Frequently Asked Questions About Thrillium
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Where is Thrillium located?
Thrillium is located in Yacolt Burn State Forest, Battle Ground, Washington, United States. It is part of the Yacolt Burn State Forest trail network. The trailhead is located at coordinates 45.72227, -122.31371.
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How hard is Thrillium?
Thrillium is rated as Black Diamond difficulty. The physical rating is Hard. The average grade is 12.6%.
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What is the elevation gain for Thrillium?
Thrillium has 18 ft of elevation gain. The trail has 1,611 ft of elevation descent. The elevation ranges from 1,278 ft to 2,883 ft.
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Is Thrillium a point to point trail?
Thrillium is not a point to point trail. The direction is Downhill Primary. The trail type is singletrack.
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