This is one of my favorite "hikes" in the Snoqualmie Pass region. I'll post a more detailed report later but suffice it to say that Mtn Dog and I missed the impending bad weather by about 10 minutes.
The "hiking" approach to Guye Peak starts at Alpental (if you get to the Snow Lake trailhead you've gone too far). The unheralded trail starts off heading in a beeline toward Guye across from the parking lot and doesn't waste a lot of time getting there.
About 1/3 of the way the trail "splits" - continue straight ahead for Snoqualmie Peak, turn "right" for Guye, follow a few cairns and obvious tread. The terrain is a mix of trail, scramble route (Class 2) and vegetation. Lots of blueberries and huckleberries gave us an excuse to stop and catch our breath.
We started out in feeble sunlight and by the time we reached the peak we could see the weather coming in. The skies were sullen but the view down to I-90 and Snoqualmie Pass is dizzying. You can also see the PCT, Red Mountain, Rampart Ridge and other Snoqualmie peaks from the summit. Fall color is just starting to pick up.
We made good time - 2 hours up, a little over 1-1/2 hours down including time for snacks and photography. The trail is steep and a few stretches are slippery - rain will make this trail worse than it already is.