From Tacoma or Seattle, from I-5, Take Hwy 16 going west. Follow to Gorst make a left onto Hwy 3, heading to Shelton. Follow to Belfair, Allyn, and immediately past Allyn after bridge make a left onto Grapeview Loop Rd. Follow for about 3 miles to stop sign, go right, follow for 2.5 miles more to Murray Rd N on your right. Look for Paintball Park signs on your left, it is the 2nd driveway, heading diagonal up to the park. 
From Olympia or Portland, take highway 101 towards Shelton, take the first Shelton exit onto Highway 3, and follow Hwy 3 14 miles to Grapeview Loop Rd S. Turn right and follow for 4 miles to Murray Rd N on your left. Follow signs.

Address:   107 Murray Rd N Grapeview, WA, 98546‎
Directions

Master Blasters Paintball Park