Trail Overview
John Bull Trail is a test of skill and vehicle capability in the San Bernardino National Forest, widely regarded as the most difficult trail in the Big Bear area. Spanning approximately 6.7 miles with elevations ranging from 7,318 to 8,141 feet, this challenging route features a relentless barrage of massive boulders, steep climbs, and tight off-camber sections. The trial begins in earnest at the notorious "Gatekeeper" obstacle near the start, which immediately weeds out under-equipped rigs with its tire-swallowing rocks. High-clearance four-wheel-drive vehicles with front and rear lockers, protective body armor, rock sliders, and at least 33-inch tires—though 35-inch or larger tires are highly recommended—are mandatory to successfully navigate the terrain.
Navigating the trail requires a skilled spotter, as winch points are scarce amongst the heavy pine forest. The route climbs about 992 feet through scenic Holcomb Valley, offering brief views of the surrounding mountain peaks before plunging back into rock crawling. The trail is typically seasonal, open in late spring and closing with the winter snows. Offroaders should plan for a slow pace, often taking several hours to complete the short distance.
Access Description
A National Forest Adventure Pass or an America the Beautiful Interagency Pass is required for parking vehicles at trailheads and staging areas within the San Bernardino National Forest. The trail is subject to seasonal closures during the winter and early spring months, typically from November to May, depending on snow accumulation and road conditions. Always check with the local ranger district for current gate statuses before heading out.
