Near Mummy Kill Route (Mummy Marathon)
Start of Big Thompson with permission from dreamer 200
Near Mummy Kill Route (Mummy Marathon)
The craggy side of Mummy
Near Mummy Kill Route (Mummy Marathon)
Waterfall along the Lawn Lake Trail. with permission from dreamer 200
Near Mummy Kill Route (Mummy Marathon)
The bridge across Roaring River has been rebuilt, providing easy access to the Ypsilon Trail.
Near Mummy Kill Route (Mummy Marathon)
A curious marmot comes to check me out along the Lawn Lake Trail.

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Driving Directions
Hike Route

Mummy Kill Route (Mummy Marathon)

4.9 (7 Ratings)
A very long day trip route over the Mummy Range in Rocky Mountain National Park.
16.1
mi
Distance
5,992
ft
Gain
strenuous
Difficulty
River/CreekViewsWildflowers

Route Details

Flatter
Steeper
16.15mi
Distance
5,992ft
Elevation Gain
8,477ft
Elevation Loss
55%
Max Grade
13,558ft
High Point
8,552ft
Low Point
Path Type
Point to Point
Description
To start, hike along Chapin Creek Trail to Chapin Pass Trail staying right at the fork for the summits of Chapin, Chiquita, and Ypsilon. The first three peaks are easy. There is a well-traveled trail up until you get to Mt. Chiquita, but be careful not to bypass Mt. Chapin - its trail splits off from the main trail and is easy to miss in the dark. It should take you about 3 hours to get to Ypsilon Summit. From the summit of Mt. Ypsilon, head north toward Mt. Fairchild. There is no marked trail here but you should be able to find a place to traverse the ridge and descend into the saddle. What comes next is what I consider the toughest part of the hike; steep class 3 scrambling up the southwest side of Mt. Fairchild. Once you get past this tough section, the summit is a few hundred feet to the east. From the top of Mt. Fairchild, continue on to Hagues Peak down across the saddle. Scramble up the south side of Hagues Peak, which is again class 3. There is a summit register somewhere at the top. Be sure to sign! From here, you can either head north and try to bag Rowe Peak for extra credit, or go southeast along the ridge to Mummy Mountain (as mapped) and complete the Mummy Kill Route, Mummy Marathon - whatever you want to call it. From the top of Mummy Mountain, head down the southeast side of the mountain until you find a path heading west to the Black Canyon Trail briefly heading west/southwest before the Lawn Lake Trail, and then follow that trail south for around 5.5 miles all the way to the finish. Keep in mind that this hike is very long and will keep you above timberline for most of the trip. There are multiple sections of steep class 3 scrambling and bad weather is not uncommon. This is not a hike for the inexperienced, and hikers should be familiar with route finding. Plan to be out for over 12 hours unless you're in really good shape.

Route Conditions

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Contributors
Ethan Reed