The Santa Ana River Trail is currently 60% complete. When fiPhase III Santa Ana River Trailnished it will run 110 miles – from the San Bernardino County National Forest to the Pacific Ocean at Huntington Beach where the trail ends. There are currently two gaps in the trail: From Green River in Orange County to Hidden Valley Wildlife area in Riverside County; and from Waterman Avenue in San Bernardino, CA to the National Forest boundary line near Mentone, CA