O. O. Denny, Big Finn Hill & Saint Edward State Park loop

This loop is generally considered a moderate hike. It covers approximately 11 kilometers (6.8 miles) and takes around 3 hours and 12 minutes to complete, depending on your pace and stops.

You can expect a varied terrain with some steep climbs, especially in the northern and southern sections, alongside moderate rolling hills on the ridgetops. The trails are often twisty, winding through ravines and alongside Denny Creek. Sections, particularly within O.O. Denny Park, can be muddy and uneven, adding to the moderate difficulty.

The trail offers picturesque views through old-growth forests with towering Douglas firs, ferns, and mosses. You'll traverse along Denny Creek, featuring clear water and charming wooden bridges. Highlights include O.O. Denny Park with its lakeside lawns and potential views of Mount Rainier, Big Finn Hill Park, and Saint Edward State Park. The Beach Trail also offers scenic views.

Yes, dogs are generally allowed on the trails within these parks. However, always ensure your dog is on a leash and that you clean up after them to maintain a pleasant experience for all visitors and protect the local wildlife.

Saint Edward State Park requires a Discover Pass for vehicle access. You can purchase a day-use pass or an annual pass. For O.O. Denny Park and Big Finn Hill Park, there are typically no entrance fees or permits required for day use.

The trail is accessible year-round, but spring and fall offer pleasant temperatures and vibrant scenery with lush greenery or autumn colors. Summer is also popular, though it can be warmer. Winter hikes are possible, but be prepared for potentially muddy conditions and cooler weather.

Parking is available at O.O. Denny Park, Big Finn Hill Park, and Saint Edward State Park. Be aware that a pedestrian bridge in O.O. Denny Park, which connects the parking lot to the main park area, was closed due to tree damage in late 2025, so plan your access accordingly.

Yes, this loop seamlessly links O.O. Denny Park, Big Finn Hill Park, and Saint Edward State Park, providing an extensive network of trails. The route incorporates sections of official trails like Lake Washington Loop, South Ridge, North, South Canyon, Seminary, and Beach trails. Many sections are multi-use, popular for hiking, mountain biking, and dog walking.

O.O. Denny Park has a rich history, once serving as an outdoor camp for Seattle children. It was also home to "Sylvia," once the oldest cedar tree in King County. The interconnected parks offer a unique "backcountry trail experience" within an urban setting, allowing you to feel immersed in nature close to the city.

The parks are home to various wildlife. Hikers commonly report sightings of deer, owls, hawks, and eagles. Keep an eye out for these creatures, especially during quieter times of the day.

Despite its proximity to Kirkland and the greater Seattle metro area, the O. O. Denny, Big Finn Hill & Saint Edward State Park loop offers a surprisingly remote feel. The dense forests and winding trails provide a wonderful escape into nature, making it an urban oasis.