–OPEN FOR SELF-GUIDED ACCESS & SCHEDULED PROGRAMS–

Your journey along this 22-mile National Recreation Trail may begin with a docent-led hike or bike ride in rugged, oak-filled Weir Canyon Nature Preserve. The trail then takes you south toward the coast through five different cities and a portion of unincorporated Orange County — virtually guaranteeing that the only constant on this trek is an exhilarating change of scenery and topography.

The Mountains to Sea Trail is the backbone of the 50,000 acres of open space preserved on the historic Irvine Ranch. The trail was created through cooperative municipal planning so that people of all ages and abilities could experience the magnitude, magnificence and diversity of the entire landscape of the region.

From Weir Canyon to Irvine and Peters Canyon regional parks, past the historic Irvine Ranch agricultural headquarters and Katie Wheeler Library, along San Diego Creek Channel to Upper Newport Bay — there is no more enjoyable way to connect to one of the nation’s most spectacular networks of urban parks, trails and preserved natural lands. Public trails start in Irvine Regional Park, and docent-led, scheduled activities begin in Weir Canyon.

Mountains to Sea Trail Maps

Whether you travel by bike, horse or foot, you’re in for a spectacular adventure as you explore the 22-mile Mountains to Sea Trail! Click the images of the maps below for a larger, high-res view.