Radford Frontline Road - FS 104

Total Miles
10.5

Technical Rating

Easy

Best Time

Spring, Summer, Fall

Trail Type

Full-Width Road

Accessible By

Trail Overview

Front Line Road is in the San Bernardino National Forest just south of Big Bear Lake. It provides a casual meandering trail run alongside a shallow canyon formed by the 8,000-foot San Bernardino Mountain Range to the north and the 10,000-foot San Gorgonio Wilderness mountains to the south. There are numerous places to pull over for lunch or to take in the many commanding views of the mountains and tall pines that guide your way.

Photos of Radford Frontline Road - FS 104

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Difficulty

Front Line Road comprises hard-packed sandy dirt and is well-maintained and graded flat but because of flooding in the winter, it could be a bit rutted out. There are no obstacles, and it is wide enough for two vehicles to pass easily in most places. The trail suits any driver's experience level using a high-clearance SUV.

Technical Rating

Status Reports

Entirely washed out, impassable

Mason C

Aug 23, 2025

2025 Chevrolet Silverado

Open

The route is super easy and fairly open—full-size pickups won’t even get brushed by branches. The surface is mostly sand and dirt, and honestly I don’t think you even need to air down. Any regular SUV can handle it, and even a sedan could make it through if you just take it slow over the rough patches.

Very easy, fun and flowing trail. While it's posted online as closed, there was no closed gate or posted warning.