To get to the Mt. Si Trailhead:
Drive East on I-90 from Seattle to the Mile Mark 32 Exit, just past North Bend.
Turn Left to cross over the freeway on 436th Ave SE.
Drive .6 miles to the end of 436th.
Turn Left onto SE North Bend Way.
Drive .3 miles and turn Right onto Mt. Si Road.
(Mt. Si Road is called 432nd Ave SE on the left side of North Bend Way.)
Drive 2.4 miles to the sign marking the Mt. Si Trailhead and parking lot.
