Lassen Volcanic National Park is located in Northeastern California.  There are five separate entrances to the park, and one Main Park Road which runs North-South through the park.  The Main Park Road runs between the Northwest (Manzanita Lake) park entrance and the Southwest park entrance.   Dead-end roads provide access to Butte Lake, Juniper Lake, and Warner Valley areas.

Northwest Entrance:
GPS: 40°32'40"N 121°34'38"W
From Redding, California:  The Northwest entrance is approximately 50 miles east on Highway 44.
From Reno, Nevada:  The Northwest is approximately 180 miles west via 395 and Highway 44.

Southwest Entrance:
GPS: 40°26'08"N 121°32'02"W
From Red Bluff, California:  The Southwest entrance is approximately 45 miles east on Highway 36
From Reno, Nevada:  The Southwest entrance is 160 miles west of Reno, Nevada via 395 and Highway 36. 

Butte Lake:
GPS: 40°33'58"N 121°17'50"W
Access to the Butte Lake area is via a dirt road off Hwy 44 east of Old Station. 

Juniper Lake:
GPS: 40°27'3"N 121°17'43"W
Access to Juniper Lake is via a partially paved road north of Chester off Hwy 36.

Warner Valley:
GPS: 40°26'30"N 121°23'35"W
Access to Warner Valley is via a partially paved road north of Chester off Hwy 36. Follow the signs to Drakesbad Guest Ranch.

The nearest major airports include Sacramento, California (165 miles away) and Reno, Nevada (180 miles away).