Trail Reports

    Cove's First Hike: Source Lake at Snoqualmie Pass with 20 Foster MBAs

    A five-month-old Siberian Husky, twenty-plus UW classmates, and a bluebird October day on one of the best dog-friendly hikes near Seattle.

    Josh GonzalezOctober 23, 2026 · 5 min read
    UW Foster MBA classmates and Husky puppy Cove on a rocky slope above Alpental at Snoqualmie Pass, Washington

    Trail Snapshot

    Hiked
    Sunday, October 18, 2026
    Dog Rules
    Dogs allowed on leash
    Trailhead
    Snow Lake Trailhead, north end of the Alpental lot (I-90 exit 52)
    Difficulty
    Moderate
    Route
    Out and back via the Snow Lake Trail and Source Lake spur
    Best Season
    Summer through early fall. Avoid in snow season (the route crosses a large avalanche chute).
    Distance
    4.1 mi
    The Pack
    Cove, Siberian Husky (5 months)
    Pass Required
    Northwest Forest Pass or America the Beautiful Pass
    Time
    2 to 2.5 hours
    Elevation Gain
    944 ft

    Every pack has a first trail. This was Cove's.

    Cove is a five-month-old Siberian Husky, Washington-born, and Delta's half-sister. Until this October, her biggest adventures were our local Seattle neighborhood, Red Bridge Campground, and whatever she could find under the couch. So when the University of Washington Foster MBA Outdoor & Sports Industry Club put together a hike to Source Lake at Snoqualmie Pass on Sunday, October 18, we knew it was time.

    Cove wearing a lilac harness and leash follows Foster MBA classmates up a forest trail near Snoqualmie Pass
    Into the forest with the pack.

    The Source Lake Trail

    Source Lake sits at the head of the valley above Alpental in the Mount Baker-Snoqualmie National Forest, about an hour east of Seattle. You start on the Snow Lake Trail from the north end of the Alpental lot, climb a short set of log steps, then settle into a gradual grade through the forest. About a mile in, the trees open onto a talus slope and Chair Peak shows up across the valley.

    Right around the 1.75-mile mark, where the Snow Lake Trail starts switchbacking up the ridge toward the Alpine Lakes Wilderness, a spur peels off across a boulder field to an overlook of Source Lake, the headwaters of the South Fork Snoqualmie River. 4.1 miles round trip and 944 feet of gain. Big enough to feel like a real mountain day, but also short enough for a puppy's first one.

    Cove follows hikers along the Source Lake trail through autumn foliage with mountains above Alpental in the background
    October color and mountain views along the trail.
    Five-month-old Husky puppy Cove looks toward the camera while standing in a shallow puddle on the Source Lake trail wearing her lilac harness
    One muddy-pawed trail dog.

    Twenty Classmates, One Puppy

    We rolled out with more than twenty Foster MBA candidates from the University of Washington. Future founders, consultants, operators, and a few on their very first Cascades hike. Cove treated every single one of them like a long-lost friend and let them all know she was happy to be there.

    She set the rhythm early: sniff, trot, stop for a pet, repeat. By the first mile she had a fan club. By the talus slope, people were asking for a turn on the leash. I've spent over a decade leading people, and I'll say it simply: nothing builds a team faster than a puppy.

    By the first mile she had a fan club.

    The day was epic. Bluebird sky, crisp air, and that clean October light you only get a handful of times a year in the Pacific Northwest.

    A Foster MBA classmate crouches beside Husky puppy Cove near Alpental after the Source Lake hike
    Making friends, one switchback at a time.

    The Summit Nap at Source Lake

    At the overlook, the group spread out across the rocks with Source Lake below and the ridgeline above. Everyone pulled out snacks and phones. Cove, on the other hand, decided to recharge with a little nap.

    She curled up next to my boots and was out in about thirty seconds. We let her sleep while the rest of us took in the view. No one argued with her priorities.

    Five-month-old Siberian Husky puppy napping on the rocks at the Source Lake overlook near Snoqualmie Pass
    Summit snack for us. Summit nap for her.
    Two hikers stand on the rocky Source Lake overlook with the lake and forested valley above Alpental behind them
    A mountain day with classmates above Source Lake.

    Dru Bru: A Dog-Friendly Patio After the Hike

    Every good hike ends somewhere with a patio. Ours ended at Dru Bru, a few minutes down the road at Snoqualmie Pass, where leashed dogs are welcome outside. A bite, a cold beer, a fire pit, and a table of classmates trading stories and good times.

    Cove's contribution: the big nap. Fully horizontal on the ground, recharging like she'd just summited Rainier.

    Husky puppy asleep on the dog-friendly patio at Dru Bru brewery in Snoqualmie Pass after a hike
    Recharge mode: fully engaged.

    The Best Part

    As we were leaving Dru Bru, my friend spotted a couple walking in with their own Husky and told them they had to follow us on Instagram. The woman looked at the puppy in my arms and asked, "Is that Cove from Camp Husky?"

    She follows Camp Husky and had watched Cove grow up all summer, from tiny puppy to trail dog, one post at a time. And there she was, sleepy in my arms after her first real hike.

    Hi, Erin and Dakota! It was so good to meet you guys. Cove sends Dakota a scratch behind the ears.

    That's the moment that stuck with me. We build this brand on content, but the point has always been people. The ones on the trail, the ones at the table, and the ones who have been along for the ride since day one.

    Source Lake vs. Snow Lake with a Dog

    Both hikes start at the same Alpental trailhead. Snow Lake is 7.2 miles round trip with about 1,800 feet of gain and a steep climb to the ridge. Source Lake turns off before that climb: 4.1 miles and 944 feet. For a puppy, an older dog, or anyone new to Cascades hiking, Source Lake gives you the same valley, talus, and peak views at about half the effort.

    Tips for Hiking Source Lake with a Puppy

    Some links in this story are affiliate or partner links. We only feature gear we use in the field, and we may earn a commission at no cost to you.

    What We Carried

    Dog

    Wilderdog

    Wilderdog Harness (Lilac)

    Partner + Affiliate

    Cove's harness

    Wilderdog

    Wilderdog Ultralight Leash (Lilac)

    Partner + Affiliate

    Cove's leash

    Wilderdog

    Wilderdog Ultralight Collar (Lilac)

    Partner + Affiliate

    Cove's collar

    Field Notes & FAQs

    Yes. Leashed dogs are allowed on the Snow Lake Trail and the Source Lake spur at Snoqualmie Pass. It is a popular trail, so keep your dog close on busy weekends and across the talus and the boulder field on the spur.

    Our Siberian Husky Cove hiked Source Lake at five months old. We kept the pace easy, took plenty of breaks, and let her nap at the overlook. Every puppy is different, so check with your vet about how far your dog should hike at their age.

    Source Lake is 4.1 miles round trip with 944 feet of elevation gain, starting from the Alpental lot at Snoqualmie Pass. Most hikers take 2 to 2.5 hours. Give yourself extra time with a puppy.

    The Alpental trailhead is about an hour east of Seattle. Take I-90 east to exit 52 (Snoqualmie Pass West), go north under the freeway, and follow the road to the end at the Alpental lot.

    Source Lake is the easier choice: 4.1 miles and 944 feet of gain versus 7.2 miles and about 1,800 feet for Snow Lake. Both start at the same trailhead, so Source Lake is ideal for puppies, senior dogs, and first-time hikers.

    Yes. Parking at the Alpental trailhead requires a Northwest Forest Pass or an America the Beautiful Pass. The lot fills early on weekends, so arrive early.

    Not casually. The route crosses a large avalanche chute, so in snow season it is avalanche terrain that calls for training and proper gear. Summer through early fall is the best window for a dog hike.

    We went to Dru Bru, a brewery a few minutes from the Alpental trailhead. Leashed dogs are welcome on the outdoor patio, and you can bring your own food or have it delivered.

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