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Tonquin Trail

Ice Age Tonquin Trail

Planning and conservation    Natural areas, parks and trails    Planning parks and trails    Regional trails and greenways    Ice Age Tonquin Trail

The Ice Age Tonquin Trail promises 22 miles of adventure, connecting Sherwood, Tualatin and Wilsonville.

Someday, the Ice Age Tonquin Trail will take you from the banks of the Willamette River in Wilsonville, through Graham Oaks Nature Park and the Villebois neighborhood, past kolk ponds and large boulders left by historic floods – onward to Old Town Sherwood, the Tualatin River National Wildlife Refuge and Tualatin's Ki-a-Kuts bridge and Cook Park.

This adventure will unfold mile by mile, fueled by a master plan meant to jumpstart construction throughout the southwest part of the region. The 22-mile trail will connect Sherwood, Tualatin and Wilsonville, giving people new ways to get to work, shopping and schools. The trail will also pass some of the region's most spectacular scenery and parks, inspiring people to get outside and enjoy nature.

Get a taste of the Tonquin now

Walkers, joggers and bicyclists are already using the Ice Age Tonquin Trail at Graham Oaks Nature Park, which attracts 250,000 visitors per year, and the Ki-a-Kuts bicycle and pedestrian bridge, which draws more than 750,000. You can also explore the trail in Wilsonville’s Villebois community, at Stella Olsen Park in Sherwood and at Tualatin Community Park in Tualatin.

Tonquin Trail routeMore trail is on the way

With five miles of the trail complete, that leaves 17 miles to go. The rest of the trail will be built as funding is identified – beginning with the Cedar Creek Greenway section, which traces its namesake creek through Sherwood.

Metro is securing remaining sections of the trail with funds from a voter-approved natural areas bond measure. Working with willing sellers, Metro pays market value to buy land or the right to build a trail on it. Download the trail route

Future trail features ancient history

Visitors will quickly discover why "Ice Age" is part of the trail's name, as they explore a landscape shaped by historic floods.

Some 15,000 years ago, a huge ice dam repeatedly broke near the Montana-Canada border, unleashing water, icebergs, glacial ice and debris. Cascading through Montana, Idaho, Washington and Oregon at the speed of a car driving on the freeway, the floods left their mark. When you travel on the Ice Age Tonquin Trail, you'll find scoured scablands, rich wetlands and kolk ponds.

Tonquin built section before

Biking along the trail in the Villebois community.


Tonquin built section after

The Ki-a-Kuts Bridge where the Ice Age Tonquin and Fanno Creek trails meet at the Tualatin River.

Trail makes regional connections

As part of the regional trail network, the Ice Age Tonquin Trail will provide connections with the Westside and Fanno Creek trails. There may also be a link to Champoeg State Park, if the proposed French Prairie Bridge is built over the Willamette River in Wilsonville.

Regional trails play a big role in the region’s developing Active Transportation Plan, which will identify strategies, priorities and projects to complete a seamless network that allows people to get around without cars.

Master plan lays groundwork for trail

Metro and partners along the route of the Ice Age Tonquin Trail endorsed a master plan in 2013, creating a blueprint for its route, design, funding, phasing, maintenance and more.  The plan was three years in the making, with a steering committee evaluating options and gathering public input. More than 1,000 citizens weighed in by attending open houses, filling out surveys or writing in with their ideas.

With a master plan in place, project partners can begin securing the remaining land needed and more effectively seek funding to make this vision a reality.

To view PDF files, download free Adobe Reader. To translate PDF files into text to assist visually-impaired users, visit

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Project information

If you have difficulty downloading these files, call 503-797-1870 for assistance or to request a printed copy.

Need assistance?

Robert Spurlock, Associate Regional Planner

news highlights

Ice Age Tonquin Trail in the media

Read how residents are inspired by the promise of the Ice Age Tonquin Trail in a June 2010 Portland Tribune article. Go to the article

Learn about plans for the regional trail between Wilsonville, Sherwood and Tualatin in a February 2010 Oregonian article.Go to the article

Kid's view

A child's view of the Tonquin Trail

Children draw their vision for the future Ice Age Tonquin Trail

While parents shared their ideas about the future Ice Age Tonquin Trail at three open houses in December 2009, volunteers helped the children give expression to their visions for the trail through art. Refresh this page to view another image.

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