Brent Frei, Mark Albedyll, and Tom Haines prepare for a one-day adventure to summit three peaks (Mount Si, Mailbox Peak, and Granite Mountain) in the Cascade mountains east of Seattle. That's 22.4 miles up and down 11,000 vertical feet in a day. Frei notes the departure time while Albedyll and Haines prepare their gear at the Mount Si trailhead in North Bend, Wash.