Fremont Peak, Mountain summit in San Benito County, California.

Fremont Peak is a granite summit in San Benito County, California, with views over Monterey Bay, Santa Clara Valley, and San Benito Valley on clear days. The peak sits within a state park that has hiking trails, picnic areas, and campsites.

In 1846 John C. Frémont, a captain in the U.S. Army Corps of Topographical Engineers, climbed the peak with 60 armed surveyors to assess its military value. Ordered out of California by Mexican General José Castro, he built a crude stockade and raised a modified American flag, though some sources place the flag on a lower nearby peak. The site is California Historical Landmark #181.

The Fremont Peak Observatory Association runs a public observatory near the summit, where visitors can attend night sky viewing sessions. On clear evenings, the darkness of the surrounding hills makes the sky above the peak especially good for stargazing.

The summit is reached by a short trail that most visitors can handle without difficulty. Weather at this elevation can shift quickly, so bring a layer even on warm days.

The peak was named after John C. Frémont long after his brief stay there, not by the man himself. A small monument near the top marks the spot where he reportedly planted the flag in 1846.