Clark's Mountain Loop via Lewis and Clark Discovery Trail
Clark's Mountain Loop via Lewis and Clark Discovery Trail
3.2
(15)
62
runners
02:18
15.9km
690m
Running
Embark on the challenging Clark's Mountain Loop via Lewis and Clark Discovery Trail, a difficult jogging route that spans 9.9 miles (15.9 km) and climbs a significant 2253 feet (687 metres). As you ascend, you'll experience diverse terrain, from dense old-growth Sitka Spruce forests to grassy dunes and transitional wetlands.…
Last updated: April 23, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Start point
Parking
Get Directions
27 m
Highlight • Trail
Tip by
6.04 km
Highlight (Segment) • Trail
Tip by
15.9 km
End point
Parking
Way Types & Surfaces
Way Types
15.9 km
< 100 m
Surfaces
12.0 km
3.85 km
< 100 m
Sign up to see more specific route details
Sign up for free
Elevation
Highest point (350 m)
Lowest point (20 m)
Sign up to see more specific route details
Sign up for free
Weather
Powered by Foreca
Monday 25 May
13°C
9°C
-- %
Additional weather tips
Max wind speed: -- km/h
to get more detailed weather forecasts along your route
This route was planned by komoot.
Komoot estimates the average jogging time for this 15.9 km loop to be around 2 hours and 18 minutes. However, given its difficult rating and significant elevation gain, individual times may vary based on fitness level and trail conditions.
No, the Clark's Mountain Loop is rated as difficult and features substantial elevation changes, including a climb of approximately 411 meters (1,350 feet) to the summit of Clark's Mountain. It's best suited for experienced trail runners with good fitness and sure-footedness, rather than casual or beginner joggers.
The trail can be accessed from Ecola State Park. A common starting point is the Tillamook Head Trailhead within the park. Parking is available, but Ecola State Park requires a day-use fee or a valid Oregon State Parks Pass.
The terrain is varied and challenging. While some parts of the broader Lewis and Clark Discovery Trail might be paved, the section leading up Clark's Mountain is a natural trail. Expect steep sections, numerous switchbacks, dirt, roots, and potentially muddy or slippery areas, especially after rain. Proper footwear is essential.
This loop offers stunning coastal beauty. You'll be treated to panoramic views of the Pacific Ocean, glimpses of the Terrible Tilly Lighthouse, Cannon Beach, and the expanse of Seaside, Oregon. The trail also winds through dense forest groves of old-growth Sitka Spruce and offers views of grassy dunes and transitional wetlands.
Yes, the Clark's Mountain Loop is part of a larger network. The route follows sections of the Oregon Coast Trail, the Lewis and Clark Discovery Trail - Oregon Coast Trail, and the Clatsop Loop Trail. It also briefly touches upon the Tillamook Rock Lighthouse Trail and Indian Beach Trail.
Dogs are generally allowed on trails within Ecola State Park, but they must be kept on a leash. Always check current park regulations before your visit, as rules can change.
Yes, as the trail is located within Ecola State Park, a day-use fee is required for vehicle entry. You can purchase a day pass at the park entrance or use an Oregon State Parks Pass.
The Oregon coast weather can be unpredictable. Late spring through early fall (May to October) generally offers the most favorable conditions with less rain and milder temperatures. However, be prepared for potential fog or rain at any time. Winter can be very wet and muddy, making the already challenging terrain even more difficult.
Beyond the natural beauty, the trail is rich in history. You'll encounter bronze sculptures commemorating the Lewis and Clark Expedition, particularly Captain William Clark's journey through Tillamook Head. The summit of Clark's Mountain itself is a significant landmark, offering expansive views.
Given the trail's difficulty and varied terrain, we recommend bringing sturdy trail running shoes with good grip, plenty of water, layers of clothing to adapt to changing weather, and navigation tools (like the komoot app) as cell service can be spotty. Trekking poles can also be helpful for the steep sections.