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Routes
Bike touring routes & trails
United States
Oregon
Clackamas County
Wilsonville

Graham Oaks Nature Park & Parrett Mountain Road loop

Hard

2.8

(28)

53

riders

Graham Oaks Nature Park & Parrett Mountain Road loop

01:57

29.4km

450m

Cycling

Embark on the Graham Oaks Nature Park & Parrett Mountain Road loop, a difficult touring cycling route that spans 18.3 miles (29.4 km) and challenges you with 1481 feet (451 metres) of elevation gain. This ride, estimated to take 1 hour and 57 minutes, offers a dynamic blend of tranquil…

Last updated: April 23, 2026

Waypoints

A

Start point

Bus stop

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1

2.62 km

Graham Oaks Nature Park

Highlight • Forest

Graham Oaks Nature Park in Wilsonville, Oregon, was spared from becoming a landfill in the '80s. Now, a thriving 250-acre haven with 150,000 native shrubs and trees, connected by 3 …

Tip by

2

15.1 km

Situated on Parrett Mountain, the park boasts stunning views of the surrounding Chehalem Mountains and Yamhill Valley. The park offers a network of trails suitable for walking, hiking, and horseback …

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B

29.4 km

End point

Bus stop

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Way Types & Surfaces

Way Types

22.3 km

6.46 km

462 m

111 m

< 100 m

< 100 m

Surfaces

26.3 km

2.76 km

350 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 (370 m)

Lowest point (30 m)

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Weather

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Today

Monday 25 May

18°C

11°C

94 %

Additional weather tips

Max wind speed: 21.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where is the best place to park for this cycling loop?

The loop typically starts and ends at the Bob and Crystal Rilee Park Trailhead, which offers parking facilities. This is a convenient spot to begin your ride through Graham Oaks Nature Park and onto Parrett Mountain Road.

What is the terrain like on this touring bicycle route?

The route offers a diverse terrain. Within Graham Oaks Nature Park, you'll find mostly paved, multi-use paths like the Tonquin Trail, which are generally flat with gentle slopes. However, the Parrett Mountain Road section is known for its challenging 'punchy climbs and rollers' and significant elevation gain. Be prepared for some segments that may be unpaved and difficult, potentially requiring you to push your bike.

Is this cycling loop suitable for beginners?

No, this loop is categorized as a 'difficult' ride, requiring 'very good fitness' and is best suited for experienced touring cyclists. The demanding climbs and potential unpaved sections on Parrett Mountain Road make it challenging for those new to cycling or seeking a leisurely ride.

What kind of scenery can I expect along the way?

You'll experience varied and picturesque scenery. Graham Oaks Nature Park features restored oak savanna, grasslands, conifer forests, and wetlands. As you ascend Parrett Mountain, the views open up to expansive vistas of the Willamette Valley and bucolic farmland, with wildflowers in season.

What wildlife or plants might I see?

In Graham Oaks Nature Park, you might spot various bird species, Western gray squirrels, and the park's signature white oak trees. Along Parrett Mountain Road, you'll pass through farmland and may see wildflowers during certain seasons.

What is the best time of year to cycle this loop?

Spring and fall are generally ideal for cycling this loop, offering pleasant temperatures and vibrant scenery, including wildflowers. Summer can also be good, but be prepared for warmer weather, especially on the exposed climbs of Parrett Mountain. Winter rides are possible but may involve colder temperatures and potentially wet conditions.

Are dogs allowed on this cycling route?

Dogs are generally allowed on trails within Graham Oaks Nature Park, but they must be kept on a leash. When cycling on public roads like Parrett Mountain Road, standard leash laws and local regulations apply. Always ensure your dog is safe and does not interfere with other cyclists or traffic.

Do I need any permits or pay entrance fees for Graham Oaks Nature Park?

No, there are no entrance fees or permits required to access Graham Oaks Nature Park or to cycle this loop. It is a publicly accessible park and road system.

Does the route intersect other well-known paths?

Yes, within Graham Oaks Nature Park, the route extensively uses sections of the Ice Age Tonquin Trail and the Tonquin Trail. You'll also encounter smaller segments of the Gateway Trail, Arrowhead Trail, and Coyote Way.

What type of bicycle is recommended for this loop?

Given the mix of paved and potentially unpaved sections, and the significant climbs, a touring bicycle capable of handling varied surfaces is highly recommended. A robust road bike with wider tires could also work, but be prepared for the more challenging unpaved segments on Parrett Mountain Road.

Are there any facilities like restrooms or water along the route?

Restrooms and water fountains are typically available near the Bob and Crystal Rilee Park Trailhead at Graham Oaks Nature Park. However, once you are on Parrett Mountain Road, facilities become scarce, so it's advisable to carry sufficient water and any necessary supplies for the duration of your ride.

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