Sedro-Woolley
is about 60 miles north of Seattle and 5 miles east of Burlington on
Hwy 20. The recommended access from Interstate 5 is exit 232 / Cook Rd a couple miles north of Burlington. Cook Road will intersect 
with Hwy 20 at Sedro-Woolley. Turn left onto Hwy 20 and proceed 1.1 miles to Three Rivers Inn.(The map on the left shows the Hwy 20/Fruitdale Rd route to Vandenburg Campground - 3.75 Mi).
For the shortest route from 3 Rivers Inn to Vandenburg Campground, take Hwy 9. (3.4 Mi.)
From the hotel at 210 Ball St...
1) turn right on Hwy 20
2) proceed east 0.1 miles
3) turn Left at the intersection of Hwy 20 & Township St / Hwy 9
4) proceed north on Hwy 9 for 2.3 miles
5) turn right on Mosier Rd
6) proceed 0.4 miles
7) turn left on Fruitdale Rd
8) proceed 0.6 miles to Vandenburg Campground on the left.