From I-405 South: 

• Take Exit 4 (Renton/Enumclaw).
  
• Go east on Maple Valley Hwy past the Maplewood Golf Course.
  
• Turn left (north) on 149th Ave SE/Orcas Ave.
  
• The entrance to park is on left (Orcas Ave) .

From I-405 North:

• Take Exit 4A (Maple Valley/Enumclaw)
  
• Go east on Maple Valley Hwy past the Maplewood Golf Course.
  
• Turn left (north) on 149th Ave SE/Orcas Ave.
  
• The entrance to park is on left (Orcas Ave).

Warning! The park is misnamed in Yahoo