North Slaughter Canyon Trail is a 5.3-mile, one-way backcountry route from Slaughter Canyon parking to the Guadalupe Ridge Trail junction. It follows a broad desert wash, then climbs a rocky ridge between the north and middle forks, with roughly 1,850 feet of elevation change. Allow about seven hours to reach the junction. This is not a loop; returning to the same lot makes it roughly 10.6 miles and about 14 hours at that one-way estimate. Treat it as a serious point-to-point hike, not a quick canyon walk.
This is the long canyon-to-ridge route, not Slaughter Canyon Cave Trail. The cave trail is a separate, steep half-mile climb to the cave entrance and branches west near the parking area.