I tried out the Lost Lake trail today that leaves from Arroyo Park at the base of Chuckanut Mountain. Total round trip distance was about 9 miles. I wandered a bit on the trail network so I believe the shortest path there is about 8 miles round trip or so. Trip took me about 2.5 hours with a few short stops; difficulty is set at ""moderate"" which seems relatively accurate. Trail was fairly wet most of the way, but became one giant mudhole for the last mile or so to the lake. Right before the lake there appears to be the remnants of an old foot bridge, but the bridge is no more. Simply find your way through all the fallen trees and head towards the lake. The lake was beautiful; completely surrounded by trees and promotes great echos!