Badger Mountain features 6 miles of hiking trails near Richland, WA.
From I-182 Queensgate exit, south on Queensgate to Keene. Turn left onto Keene for ~3/4 mi. Turn right onto Brantingham and another almost immeidate right onto Westcliffe. Up the hill on Westcliffe until it T-s, then left onto Meadow Hills. After 1/8 mi, turn right onto Summit. The trailhead is at the top of Summit (by the water tanks).
http://www.tripleblaze.com/trail.php?c=3&i=2045