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Difficulty
This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
Hard
Elevation
This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
818 m
Distance
This reflects the return distance of this route as measured by the GPS file.
17.4 km
Duration
This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
5.5-7.5h
User Ratings
These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
Be the first to add a review!
Directions to Trailhead

Sunnyside Trail

Measurement:

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Table of contents

The Sunnyside Trail is a challenging, but highly rewarding day-hike located just outside of Aspen’s city center. Conveniently located and incredibly scenic, this route is a crowd favorite. Escape the hustle and bustle of the city and reconnect with nature along this sunny path.

Route Description for Sunnyside Trail

Enjoy sweeping vistas of the Elk Mountain Range and Aspen’s bustling ski resorts along the Sunnyside Trail. Like the name suggests, this trek is exposed to the sun, which makes for extremely warm conditions in the summer months. We suggest heading out in the early morning to beat the heat and the crowds! A great way to acclimatize to the area’s altitude, this trek does ascend in elevation. Be sure you pack plenty of water — way more than you anticipate needing. Trust us, the vertiginous terrain and exposed path will tire you!

Departing from the Rio Grande Trailhead, the Sunnyside Hike will briefly track the Rio Grande Trail before merging onto the Sunnyside Trail at the first intersection. Hikers will have to cross over McLain Flats Road before beginning the climb through the meadowlands. Ascend the vertigo-inducing terrain through several switchbacks up to the radio tower. From this point the terrain will be more level and shaded as it guides adventurers briefly along the edge of the woodlands.

From the southern slope of Red Mountain you will be rewarded with sweeping views of the mountainous landscape that stretches for as far as the eye can see. Soon you will meet the trail’s end. If you want some shade, consider trekking the Shadyside Trail before reconnecting with the Sunnyside Trail and heading back to the trailhead. If not, retrace your footing along the same path back to the parking lot.

Getting to the Sunnyside Trail Trailhead

The Sunnyside Trail departs from the Rio Grande Trailhead off McLain Flats Road.

Route Information

  • Backcountry Campground:

    No

  • When to do:

    April-October

  • Pets allowed:

    Yes - On Leash

  • Family friendly:

    Older Children only

  • Route Signage:

    Average

  • Crowd Levels:

    Moderate

  • Route Type:

    Out and back

Sunnyside Trail Elevation Graph

Weather Forecast

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