Shanahan North Fork Trail to Mesa Trail Loop
Shanahan North Fork Trail to Mesa Trail Loop
4.5
(2283)
18,589
hikers
03:29
11.5km
400m
Hiking
Embark on the Shanahan North Fork Trail to Mesa Trail Loop for a moderate hike that spans 7.2 miles (11.5 km). You will gain 1307 feet (398 metres) in elevation, typically completing the route in about 3 hours and 29 minutes. As you hike, you will experience a diverse landscape,…
Last updated: April 23, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Way Types & Surfaces
Way Types
11.0 km
361 m
109 m
< 100 m
Surfaces
11.1 km
280 m
112 m
< 100 m
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Elevation
Highest point (1,970 m)
Lowest point (1,730 m)
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Weather
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Today
Wednesday 27 May
18°C
11°C
85 %
Additional weather tips
Max wind speed: 13.0 km/h
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This route was planned by komoot.
The full loop, as described, typically takes around 3.5 hours to complete. This duration can vary based on your pace and how often you stop to enjoy the views.
The terrain is quite varied, offering a diverse hiking experience. You'll traverse through shaded ponderosa pine forests and open savannahs, with some sections providing expansive views. The North Fork Shanahan Trail itself features gentle climbs and a steady incline, while integrating with the Mesa Trail can introduce more challenging sections, contributing to the overall moderate difficulty of the loop.
Yes, hikers can expect beautiful scenery throughout the loop, including consistent and often stunning views of the iconic Flatirons. You'll also pass by Shanahan Hill, a notable summit along the way. Depending on the season, you might also see vibrant wildflowers and the gurgling waters of Bear Creek.
Yes, this loop is generally dog-friendly. Dogs are allowed on leash, making it a popular choice for pet owners looking to enjoy the outdoors with their canine companions.
Many sections of this trail system, including the Shanahan Ridge Loop, can be hiked year-round. However, spring and fall offer pleasant temperatures and beautiful scenery, with spring bringing wildflowers. Winter hiking is also possible, but be prepared for snow and ice, especially in shaded areas.
The Shanahan North Fork Trail and Mesa Trail are part of the City of Boulder Open Space and Mountain Parks (OSMP) system. Generally, there are no entrance fees for hiking on OSMP trails. However, specific regulations or permits might apply for certain activities or areas. It's always a good idea to check the official Boulder OSMP website for the most current information regarding permits or regulations before your visit.
Access to the Shanahan North Fork Trail is typically from trailheads in south Boulder. Parking is available at designated trailheads serving the Shanahan Ridge area. Due to the popularity of these trails, especially on weekends, parking lots can fill up quickly. Arriving early in the morning is often recommended to secure a spot.
The diverse habitats along the loop mean you have a chance to spot various wildlife. Common sightings include deer. While less frequent, black bears and mountain lions are also known to inhabit the area, so it's important to be aware of your surroundings and practice wildlife safety.
Yes, this route is part of a larger network. The Shanahan North Fork Trail connects directly to the wider Mesa Trail system, allowing for longer and more varied hiking options. The loop itself incorporates significant sections of the Mesa Trail, Shanahan - North Fork Trail, Towhee Trail, and Homestead Trail, offering excellent connectivity within the Boulder OSMP.
While the Shanahan North Fork Trail itself has sections considered easy to medium with a steady incline, the full loop combining it with the Mesa Trail is rated as 'moderate'. This means it might be moderately demanding for absolute beginners due to its length and elevation gain. Hikers with some experience or those looking for a bit of a challenge will find it enjoyable.
Yes, as part of the City of Boulder Open Space and Mountain Parks (OSMP), there are regulations in place to protect the natural environment and ensure a positive experience for all visitors. These often include rules about dogs (leash laws), staying on marked trails, packing out all trash, and respecting wildlife. Always check the official bouldercolorado.gov/osmp website for the most current and detailed regulations before your hike.