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Routes
Mountain biking trails
United States
Oregon
Benton County
Adair Village

McDonald Research Forest loop

Moderate

3.5

(8)

70

riders

McDonald Research Forest loop

02:29

22.9km

650m

Mountain biking

This moderate 14.2-mile mountain biking loop in McDonald Research Forest offers challenging terrain, forested trails, and views of Cronemill

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

2.73 km

Cronemiller Lake

Highlight • Lake

Just a small lake, not very pretty in the wintertime.

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2

7.51 km

Upper Vineyard Mountain Trail

Highlight (Segment) • Monument

This dirt trail is very well maintained, offering a gentle incline. Along the way, you'll come across the chimney of a cabin constructed in the 1930s, which is all that …

Tip by

B

22.9 km

End point

Parking

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Way Types & Surfaces

Way Types

13.2 km

9.28 km

390 m

< 100 m

Surfaces

12.1 km

8.46 km

1.86 km

376 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (440 m)

Lowest point (100 m)

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Weather

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Today

Monday 6 July

29°C

10°C

0 %

Additional weather tips

Max wind speed: 17.0 km/h

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Frequently Asked Questions

Where can I park to access the McDonald Research Forest loop?

The McDonald Research Forest is easily accessible from Corvallis, and there are free parking options available. Many riders access the trails directly from parking areas near the forest boundary.

Do I need any permits or pay an entrance fee to ride in the McDonald Research Forest?

No, you do not need a permit, and there is no entrance fee to access the McDonald Research Forest. It is managed by Oregon State University and is open to the public.

Are dogs allowed on the trails in McDonald Research Forest?

Yes, dogs are generally allowed on the trails within the McDonald Research Forest. However, please ensure your dog is kept on a leash and that you clean up after them to respect other users and wildlife.

What is the best time of year to mountain bike this loop?

Many gravel-bedded trails in the McDonald Research Forest are open year-round, even in wet conditions. However, natural-tread trails may be temporarily closed during wet periods to prevent damage. For the best experience, aim for drier seasons, but be aware that conditions can change.

What is the terrain like on this mountain bike loop?

The terrain is quite varied, featuring a mix of old logging roads, gravel roads, and natural-surface singletrack. You should be prepared for significant elevation changes, including 'punchy climbs' and 'steep, fast, and sometimes awkward descents.' Some sections may also include rock gardens.

Is the McDonald Research Forest loop suitable for beginners?

While this specific loop is rated 'moderate,' the overall forest offers a wide range of difficulties. Some sections of the forest are challenging due to 'raw feel and big climbs,' requiring 'serious trail-skills.' There are easier trails within the broader system, but this loop might be tough for absolute beginners.

What notable features or scenery can I expect on this route?

You'll ride through beautiful forested trails, often alongside small streams, offering a 'nature lover's paradise.' Keep an eye out for wildlife and enjoy the serene environment. The route also passes by Cronemiller Lake and sections of the Upper Vineyard Mountain Trail.

Are there any specific rules or regulations for mountain bikers in the McDonald Research Forest?

Yes, the trails are multi-use, shared with hikers and equestrians. Mountain bikers are required to yield to other users. Additionally, natural-tread trails may be closed when wet to prevent damage, so always check local conditions.

Does this loop intersect with other well-known trails?

Yes, this route utilizes sections of several other trails within the extensive network. You'll ride on parts of Dave's Trail, Vineyard Mountain Trail, Bonzai Trail, Calloway Creek Trail, and the Section 36 Loop Trail, among others.

What kind of wildlife might I see while riding?

The forest provides excellent opportunities for bird watching and general wildlife sightings. It's a quiet and serene environment, so keep an eye out for local fauna as you ride through the dense woods.

What should I bring for a mountain bike ride on this loop?

Given the varied terrain and potential for challenging sections, bring plenty of water, snacks, a repair kit, and appropriate safety gear. The 'puncy climbs' and 'steep descents' mean you'll want to be well-prepared for a demanding ride.

Nearby routes

Moderate

5.0

16

McDonald Research Forest loop

02:29h

22.9km

650m

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