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Routes
Hiking trails & Routes
United States
Idaho
Ada County

Five Mile Gulch, Watchman, and Three Bears Loop

Routes
Hiking trails & Routes
United States
Idaho
Ada County

Five Mile Gulch, Watchman, and Three Bears Loop

Moderate

3.2

(14)

52

hikers

Five Mile Gulch, Watchman, and Three Bears Loop

04:41

14.3km

700m

Hiking

Embark on the Five Mile Gulch, Watchman, and Three Bears Loop, a moderate hiking route that offers a diverse outdoor experience. You will cover 8.9 miles (14.3 km) with a significant elevation gain of 2299 feet (701 metres), typically taking around 4 hours and 41 minutes to complete. As you…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Waypoints

A

Start point

Parking

Get Directions

1

1.18 km

Noble Reserve

Highlight • Forest

Noble Reserve is 598 acres in size, and was donated to the City by Allen and Billie Dee Noble in 2003. There are trails going through the preserve and it is open to the public.

Tip by

2

1.89 km

Five Mile Gulch

Highlight • Trail

Expect stunning views just outside of Boise. The trails are well-marked and you can connect the Five Mile Gulch to a loop if you hike along Three Bears and Watchman trail.

Tip by

3

12.8 km

Watchman Trail

Highlight • Trail

The Watchman Trail leads to a scenic canyon with shrubs and rolling hills. If you like solitude, this is your hike. It is connected to the Five Mile Gulch and Three Bears Trail, so you can hike a nice loop.

Tip by

4

13.5 km

Watchman Trail Junction

Highlight • Trail

Five Mile Gulch Trail will climb steeply from here. The Watchman trail will provide a flowy downhill with a couple of steep sections.

Tip by

B

14.3 km

End point

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Way Types & Surfaces

Way Types

13.7 km

595 m

< 100 m

< 100 m

Surfaces

12.9 km

1.41 km

< 100 m

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Elevation

Elevation

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Tuesday 7 July

33°C

17°C

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Frequently Asked Questions

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

The spring, particularly April and May, is ideal for experiencing vibrant wildflowers, especially yellow varieties. June brings a mix of yellow, purple, and white blooms. The trail offers shade along Fivemile Creek, making mornings pleasant even as temperatures rise. It's a great option for those seeking a challenging yet rewarding hike within the Boise Foothills Ridge to Rivers Trail System.

What is the terrain like on the Five Mile Gulch, Watchman, and Three Bears Loop?

The terrain is varied. Expect a gradual climb for the first two miles, where most of the elevation gain occurs. There are sandy sections, particularly in the first mile, which can be slippery and require good footwear. You'll also encounter numerous roots and rocks. The path includes several easy stream crossings, often with stepping stones or small bridges. After the initial ascent, much of the route becomes relatively level or downhill.

Are dogs allowed on the trail?

Yes, the trail is dog-friendly. However, please ensure your dog is kept on a leash and that you clean up after them to preserve the natural environment for all users.

Do I need a permit or is there an entrance fee for Noble Reserve?

The trail is located within the Noble Reserve in the Boise Foothills. Generally, there are no specific permits required or entrance fees for hiking on these public lands. However, always check local regulations before your visit, especially for group activities or special events.

Where can I park to access the trailhead?

The trail is easily accessible and popular with locals due to its proximity to downtown Boise (about 20 minutes away). While specific parking details aren't provided, its popularity suggests designated parking areas are available near the trailhead. Arriving earlier in the day is often recommended for popular trails to secure a spot.

What kind of views and natural features can I expect along the route?

You'll enjoy great views of the Boise Valley from various scenic spots and ridgelines. The route follows Five Mile Gulch for a significant portion, featuring abundant vegetation, including mature cottonwood and locust trees, which are uncommon in the foothills. This section offers shade and opportunities to observe wildflowers, butterflies, and songbirds. The landscape transitions from steep hillsides to rolling hills, providing diverse perspectives.

Does this trail intersect with other paths?

Yes, the route also passes through sections of the #3 Watchman, #2 Five Mile Gulch, #6 Femrite's Patrol Trail, and #4 8th Street Motorcycle trails. This integration into the broader Boise Foothills Ridge to Rivers Trail System offers varied experiences and connections to other areas.

What should I wear or bring for this hike?

Given the varied terrain, including sandy sections, roots, and rocks, good footwear, preferably hiking boots, is highly recommended to prevent slipping. Layers are advisable due to changing elevations and potential shade. Bring plenty of water, especially on warmer days, as water availability on the trail is not guaranteed. Sun protection is also wise for exposed sections.

Is the Five Mile Gulch, Watchman, and Three Bears Loop suitable for beginners?

This loop is generally graded as moderate difficulty. While it has a gradual climb for the first two miles, it also features sandy sections, roots, and rocks that require attention. Hikers should have a reasonable level of fitness. If hiked in reverse, the elevation gain can feel steeper and more intense, so consider the recommended direction for a more manageable experience.

Are there any specific highlights or landmarks to look out for?

Absolutely! The trail passes through the scenic Noble Reserve. You'll also traverse the Five Mile Gulch section, known for its mature trees and stream crossings, and the Watchman Trail, which is famous for its spectacular wildflowers in spring. Keep an eye out for the Watchman Trail Junction as well.

What is the local secret for a better hiking experience on this loop?

Many locals suggest hiking the loop in the standard direction (not reverse) to manage the elevation gain more comfortably. The initial two-mile climb is gradual, making the overall ascent feel less intense. Also, starting in the morning can provide more shade along the Fivemile Creek section, especially during warmer months.

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