Hagg Lake features 14 miles of hiking trails near Forest Grove, OR.
From Portland take the 26 West to the 217 South to the 8 West. Continue to the 47, turn left towards Henry Hagg Lake. Follow the signs. $5 / day or $50 / year. Once through the gate, turn left at West Shore Drive. Park in the big lot. Head around clockwise to the first trailhead red post on your right and drop in!
http://www.tripleblaze.com/trail.php?c=3&i=926