Marianne Williams Park

3451 E Barber Valley Dr

Marianne Williams Park is a 72-acre site located on the Boise River in East Boise's Barber Valley. The riverside park features grassy open areas, paved walkways, an extension of the Boise River Greenbelt, ponds, and an expansive view of the Boise Foothills. Bicycles and dogs including service animals are only allowed on the Greenbelt path, leashes required. The park is signed accordingly. The pink color delineates on the map where dogs and bikes are permitted.  

The site was donated to the City of Boise in November 2005 by Larry Williams in honor of his wife, Marianne.


Manicured grassy areas provide a scenic play space for children. The park also features two large ponds, paved walking paths, a gazebo, picnic shelter, restroom and benches.

Streams, ponds, wetlands, and forested riparian areas benefit wildlife, improve fisheries, and provide viewing opportunities. 

Marianne Williams Park is another treasure in the city's "Ribbon of Jewels," lining the Boise River.

Greenbelt Path

MAW.JPGThe 1.8-mile Greenbelt path system in Marianne Williams Park has been expanded to run along the Boise River and Walling Ditch. The 12-foot-wide paved riverfront pathway was created in a 200-foot corridor to provide an outstanding recreational experience while protecting the habitat needs of trout, heron and wintering bald eagles.

A pathway honoring Dallas Harris provides a more contemplative walking-only pedestrian experience in the park.

The location and extension of the paved Greenbelt path promotes alternative transportation, encourages sensitive development within the Barber Valley, and contributes to the community's overall quality of life values.

Marianne Williams

mariannewilliamsbio.jpgMarianne Williams, an Idaho native, moved with her husband, Larry Williams, and their young family from Midvale, Idaho to Boise in 1966.

Marianne Williams has dedicated her time and energies to her family, and to various civic activities benefitting the communities of the Treasure Valley. Mrs. Williams has volunteered her services to Saint Alphonsus Regional Medical Center, has worked to enrich the lives of senior citizens as the manager of a senior citizen complex, and along with her husband, actively supports numerous other civic organizations, often electing to do so anonymously.

Together with her husband, Larry Williams, Mrs. Williams has played a vital role in the support of collegiate athletics at Boise State University and has served on the Bronco Athletic Association Board of Directors.

Marianne has played an integral role in the growth and success of the various businesses that she and Larry have founded, including Tree Top Ranches and Idaho Timber Corporation.

Larry and Marianne Williams have three children: Cris Williams, Cory Williams and Cari Meyer.

Wetlands and Wildlife

MAW3.JPGMarianne Williams Park presents unique opportunities to protect, reclaim and enhance the community's critical wetland and riparian functions. These functions benefit and advance wildlife values for many creatures, including deer herds, blue heron, wintering bald eagles and trout.


This location provides opportunities to see birds and other wildlife. 

idaho birding trailThe Idaho Birding Trail (IBT) is a network of sites and side-trips that provides the best viewing opportunities to see birds in Idaho. With 175 sites and about 2,000 miles of trail separated into four distinct regions the IBT represents a collection of bird watching hotspots, diverse habitats, and a glimpse of Idaho's rich natural heritage.

If you are interested in learning more about birding in Idaho and the Idaho Birding Trail, see


Wondering about where to fish in Boise ponds? The Idaho Department of Fish & Game stocks several ponds in city parks maintained by the Boise Parks and Recreation. For the stocking schedule, see Idaho Fish & Game Stocking Information.    





Greenbelt Parking

The map showcases points of interest, pedestrian bridges, parking locations and other valuable resources for users of the 25-mile pathway. 


Operating Hours

Park is open from sunrise to sunset.

Park Ambassadors

Park Ambassador SignPark Ambassadors serve as liaisons between park users and the Boise Parks and Recreation Department (BPR). They report maintenance needs, promote proper use of the park, and share information with park users. In addition, they may share their unique hobbies and skills through special tours and programs. Park Ambassadors commit to visiting their park regularly for one year. All Ambassadors must pass a criminal history background check and attend an orientation prior to being accepted into the program.

Interested in becoming a Park Ambassador, please complete an application.


MawgazeboMarianne Williams has a shelter and gazebo that may be reserved for events, picnics and ceremonies.


Restrooms in this park are open year around.  

Smoking Prohibition

Boise Smokefree Park SignSmoking is prohibited in all public parks, including within 20 feet of the Boise Greenbelt, except in designated areas within Ann Morrison and Julia Davis parks and city-owned golf courses.

NOTE: E-cigarettes are not prohibited under the ordinances.


Unauthorized vehicles will be towed at owner's risk and expense. Boise Valley Towing at (208) 389-9707.

Master Plan

A Master Plan is a concept drawing illustrating recreation facilities and landscape features planned for a park site.  It does not necessarily represent what amenities are currently in a park.