Border Field Beach

4 miles 0 ascent. No hazards.
Hike to the southwestern most point in the continental United States!
Here last on 9/8/22.

NO DOGS
For the safety of the Park’s threatened and endangered birds, no dogs allowed on trails.
NO HARRASSING or disturbing wild animals. This is prohibited by state and federal laws.
NO COLLECTING
Shells, rocks, wood, plants or animals. As a State Park, all features are protected. Please don’t dig, collect, break or in anyway disturb the natural and historic features found in Border Field State Park.
OBEY ALL SIGNAGE NEAR THE BORDER FENCE - stay back 100 feet.

Meet in the lot outside of the entrance gate (it's locked on weekdays). The hike is approximately 4 miles on mostly flat road, trail and beach. There are restrooms at about the half way point but no drinking water so come prepared.
Located within the Tijuana River National Estuarine Research Reserve (http://www.trnerr.org/), Border Field State Park sits in the very southwestern corner of the United States, 15 miles south of San Diego. This important wildlife habitat, comprised of sand dunes and salt marshes, gives refuge to critically threatened and endangered birds such as the Western Snowy Plover, the California Least Tern, and the Light-footed Ridgway's Rail.

The Treaty of Guadalupe Hidalgo was concluded on February 2, 1848, officially ending the U.S./Mexico War. In 1850, delegations from both countries began surveying the boundary at this location. Border Monument number 258 can be viewed from Monument Mesa, however there is no close access because it is now behind two border fences. You can still see the bunkers which were leftover from World War II.

Directions:
Google Maps: Tijuana River Valley Campground, then continue on Monument Rd until you see a small parking area on the left before the gate & booth (probably closed).
Apple Maps: Tijuana River Valley Regional Park Campground, then continue on Monument Rd until you see a small parking area on the left before the gate & booth (probably closed).
N 32 32.600 W -117 06.374

From San Diego:
Take I-5S and exit at Tocayo Ave. and at Hollister St. turn left. Turn right on Monument Rd and continue past the campground to a small parking area on the left.