Tomyhoi Peak, Southeast Route (3rd)

Tomyhoi Peak

Route:

Southeast Route

3rd

A fun autumn climb with my cousin. And again 19 years later with my mom.

Region: Washington
Elev: 7,435 ft
Rock type: Greenstone
Type: 
Trip Report 1:
Date(s): September 24, 2006 (Sun)
Partner(s): Lisa Doubet
Trip Report 2:
Date(s): August 10, 2025 (Sun)
Partner(s): Sue Abegg

Route Overlay

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Map & GPS Track

GPS Track from my 2025 ascent.

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Trip Reports for Tomyhoi Peak

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In 1990, when I was seven, my parents took my sister and me on a backpacking trip along the Keep Kool Trail near Yellow Aster Butte and Tomyhoi. There’s a photo of my dad with my sister and me titled “climbing Tomyhoi Peak,” though I’m not sure if we actually reached the summit. Below are a few shots from that beautiful family adventure.

Photos

While going through the old photo archives for the 1990 Tomyhoi trip, I stumbled across some shots from 2001. Turns out my parents and I actually summited Tomyhoi that year. Photos below.

Photos

Intro

My favorite part about early autumn where I live is hiking in the North Cascades. So when September 24 looked like it would be a sunny and warm day, it was no surprise that I found myself planning a hike/climb with my cousin Lisa. The plan was to hike 3 miles into the Yellow Aster Butte area and continue up to Tomyhoi Peak, a Class 3 scramble about 3 miles from Yellow Aster Butte, near the American-Canadian Border. My Mother Sue, Aunt Barb, Uncle Scott, and Cousin’s Friend Kristen came along with Lisa and I to spend the day on the lower arm of Tomyhoi while Lisa and I climbed. We planned on a 9 hour round trip from the road for the climb, which turned out to be pretty accurate. Here is a brief timeline of our climb:
  • 8:45 am - leave trailhead (3,600 ft) of Yellow Aster Butte Trail.
  • 10:45 am - arrive at arm just below Yellow Aster Butte, around 5,200 ft.
  • 11:45 am - Aunt Barb, Uncle Scott, Mommy Sue, and Friend Kristen find a nice place on the lower Tomyhoi Arm to stay while Lisa and I climb.
  • 1:35 pm - Lisa and I arrive on summit (7,435 ft) (just under 5 hours from road at a relaxed pace).
  • 2:01 pm - Lisa and I head down from summit.
  • 6:05 pm - arrive back at car.
  • 7:15 pm - my mom and I arrive at the Sumas border crossing to find a lineup extending out the south end of the town, due to a murder suspect that is thought to be escaping into Canada. This was the longest border wait I have ever experienced. But at least we were able to get home eventually (apparently the timorous Blaine border crossing guards refused to work, saying that without guns they "felt unsafe" (a likely excuse--I think they all saw the nice weather and decided they wanted to go hiking. Perhaps this was why there were so many people climbing Tomyhoi—all those Blain border guards…)).
Below are some photos from the hike/climb. The autumn colors were beautiful.

Photos

Intro

xxx

Time Stats

Times
Leave trailhead: 8:06 am
Summit Tomyhoi: 9:32 am
Back to car: 2:28 pm
Splits
Trailhead to summit: 1 hour 26 minutes
Summit to trailhead: 31 minutes
Total time: 6 hours 22 minutes

Photos

Comments Pertaining to this Page / Trip Report

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