Turn right at the circle onto SR-202 East, continue for 4.0 miles and you reach parking area on the right side of the road.
You get to see the spectacular views of Cedar River Watershed, Chester Morse Lake, Mount Si, Mount Washington, Rattlesnake Lake, and Snoqualmie Valley.
Proceed 0.3 miles and turn right on SE Mount Si Road.
Public Transportation to reach Trail heads: On Weekends and public holidays, to limit vehicle congestion in trail head parking lots, Trail head Direct bus takes riders to three hiking destinations – Mailbox Peak trail head, Mount Si, Little Si and Issaquah Alps.