4.7
(7857)
19,547
hikers
01:25
5.62km
10m
Hiking
The Sawhill and Walden Ponds Loop offers a delightful escape into a reclaimed wetland ecosystem in east Boulder. You'll stroll along predominantly flat, wide paths, often crushed gravel, with boardwalk sections providing intimate views of the water, especially near Cottonwood Marsh. The scenery is defined by numerous ponds, creating beautiful reflections of the surrounding trees and distant foothills, making it a serene experience for all.
This easy 3.5-mile (5.6 km) hike, with only 24 feet (7 metres) of elevation gain, typically takes about 1 hour and 25 minutes. It's a fantastic option for families, birdwatchers, and anyone looking for a gentle nature walk. While the trail is generally well-maintained, be mindful that winter conditions can bring snow and ice to certain sections, so plan accordingly.
What truly sets this trail apart is its transformation from former industrial gravel pits into a thriving wetland habitat, now renowned as one of Boulder's most important birding locations. Keep an eye out for a wide array of bird species, along with garter snakes, frogs, and turtles. The area's accessibility and connection to other nearby trails also make it a versatile choice for a quick outing or a longer exploration.
Last updated: June 9, 2026
Waypoints
Start point
Parking
Get Directions
561 m
Highlight • Lake
Tip by
4.73 km
Highlight • Lake
Tip by
5.62 km
End point
Parking
Way Types & Surfaces
Way Types
4.25 km
1.35 km
Surfaces
2.35 km
1.90 km
1.29 km
< 100 m
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Elevation
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Weather
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Wednesday 19 August
31°C
18°C
57 %
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Max wind speed: 10.0 km/h
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This route was planned by komoot.
The loop is approximately 5.6 kilometers (3.5 miles) long and generally takes about 1 hour and 25 minutes to complete at a moderate pace. This duration can vary depending on your speed and how often you stop to enjoy the scenery or observe wildlife.
This is an easy trail, predominantly flat with minimal elevation gain. The paths are wide and made of soft crushed gravel, with some boardwalk sections, especially near Cottonwood Marsh. It's suitable for all abilities, including families and those seeking a gentle nature walk.
The area is a significant wetland ecosystem and a birdwatching paradise. You can often spot a wide variety of species, including dabbling and diving ducks, shorebirds, swans, geese, herons, ospreys, and cormorants. Eastern Screech-Owls are also known to inhabit the area. Keep an eye out for other small mammals and marsh plants.
The route connects two beautiful wildlife habitats: Walden Ponds Wildlife Habitat and Sawhill Ponds Wildlife Preserve. You'll enjoy picturesque views of multiple ponds, often reflecting the sky and surrounding foothills. There's also a bird viewing shelter and boardwalks that enhance the wildlife observation experience.
Yes, the trail is dog-friendly! Dogs are allowed on leashes along the gravel paths. However, please note that dogs are not permitted on the boardwalk sections to protect the sensitive wildlife habitat.
No, there are no permits or entrance fees required to access the Sawhill and Walden Ponds Loop. The area is managed by Boulder County Open Space and the City of Boulder and is freely accessible to the public.
The trail is open year-round, with each season offering a unique experience. Spring and fall are excellent for observing migrating birds. Summer provides lush greenery and warm weather, while winter offers serene, often snowy landscapes and vibrant sunsets. Be aware that some sections may be icy in winter.
Parking is available at designated lots for both Walden Ponds Wildlife Habitat and Sawhill Ponds Wildlife Preserve. These lots provide direct access to the loop trail system.
Yes, the loop connects the Sawhill Ponds and Walden Ponds trail systems. The route also passes through sections of the Sawhill Ponds, Walden Ponds, and Birdsong Trail, offering options for longer hikes and connections to trails along Boulder Creek.
While the trail is open year-round, winter conditions can bring snow and ice, especially on shaded sections. It's advisable to check local weather conditions before heading out and consider wearing appropriate footwear with good traction. Some sections might require caution or detours if conditions are particularly icy.
Given its easy nature, essentials include water, comfortable walking shoes, and sun protection (hat, sunscreen) as much of the trail is exposed. Binoculars are highly recommended for birdwatching. If hiking with a dog, remember a leash and waste bags.
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