Directions to Colonial Creek Campground, Diablo, WA -
From I-5 north of Mt. Vernon, take Exit 230 (Anacortes/ Burlington). Follow Hwy 20
~46 miles east to Marblemount. Colonial Creek Campground is located at Milepost 130,
~23 miles NE of Marblemount, on US Hwy 20. Turn right soon after crossing Colonial
Creek itself and park in large parking lot immediately after ranger kiosk. Total
drive time from Seattle is ~3 hours.