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Abyss Lake via Guanella Pass & Rosalie Trail

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Mount Evans Wilderness

Abyss Lake via Guanella Pass & Rosalie Trail is a 16.5 mile lightly trafficked out and back trail located near Idaho Springs, Colorado that features a lake and is rated as difficult. The trail is primarily used for hiking, trail running, camping, and backpacking and is best used from May until October. Dogs are also able to use this trail.

Length 16.5 mi Elevation gain 3,392 ft Route type Out & Back
Dog friendly Backpacking Camping Hiking Running Forest Lake River Views Wild flowers Wildlife Muddy Rocky No shade
Description
Waypoints (0)

This route leaves the Guanella Pass trailhead and follows the Rosalie Trail to the turnoff up to Abyss Lake. The trail is slightly overgrown in some places so make sure you keep an eye on your gps.

Weather
UV Index
Daylight
Reviews (9)
Photos (260)
Recordings (5)
Completed (19)
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Josh Schertz
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HikingBugsMuddyNo shadeOver grown

Parts of the Rosalie trail are overgrown, where scrub bushes cover the trail and you have to wade through them (especially once you cross the first stream). There is also a few places where it is easy to go off trail, so keep an eye on the map (although the planned trail is slightly off in some places). Rosalie trail was very quiet, especially the second half (where most day hikers don’t make it), but Abyss Lake trail was busy on the weekend. Tons of people camping around Helms lake over the weekend, too. I camped between Helms lake and Abyss lake, with stunning views of the valley below. Overall an enjoyable weekend trip.

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Lauren Spatenka
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BackpackingMuddySnow
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gayle bickkley
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HikingNo shadeRocky

fun hike.

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Phil Zelnar
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Running

Ran this a few weeks ago. Lots of fun scenery and up-and-down. Great views of Bierstadt and the sawtooth. There are a cpl creek crossings and the trail was flooded quite a bit further out, so bring extra socks if you don’t like wet feet. Saw a handful of ppl en route, but not many which was a surprise since Silver Dollar and Bierstadt bring the crowds.

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Richard Steane
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Hiking
First to Review

I really enjoyed this way of getting to Abyss Lake. The Guanella Pass Trailhead was quite busy but everyone else was going up the Mt Bierstadt trail so I had the lower area all to myself. The Rosalie trail has a lot of sweeping dramatic views and Lake Abyss at the end is absolutely worth the trek.

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Julie Stone
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Hiking
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Robert Dudney
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Hiking
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Bill Tabbert
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Hiking
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Mike Pratt
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Hiking
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