Heart Lake Nrt

USFS trail 310

Trail facts

Length: 8.8 mi mapped
Grade: Typical grade 12 to 20%
Surface: native material
USFS-managed hiker season: May 1 through November 1
USFS-managed uses: Hiking, Horseback (pack and saddle)
Motorized status: Non-motorized (USFS designation)
Accessibility: Not listed by the USFS as accessible
Designation: National trail designation
National forest: Lassen National Forest

Length is the trail as the Forest Service maps it, not a trip distance. Hike out and back and you will cover it twice; check the shape of the route before you count on the figure.

This record is a snapshot of U.S. Forest Service data retrieved on 2026-07-09. It does not reflect current closures, conditions, or seasonal orders. Check with the local ranger district before you go.

Elevation

High point: About 7,500 ft
Low point: About 5,750 ft

Estimates, derived from US government elevation data sampled along the USFS-mapped route, computed 2026-07-10. We have not measured these figures in the field.

Plan a day on this trail

A day here means a typical grade of 12 to 20%, inside a managed hiker season that runs May 1 through November 1. Tell the Trip Builder where you are headed and it assembles a day-specific kit with weather, daylight, and terrain in mind.

Build your kit

Data: U.S. Forest Service, retrieved 2026-07-09.