This month, 99 runners from around the globe embarked on a grueling 135-mile competition from the lowest point below sea ...

Here's how hard it is summit the five highest mountains in the contiguous United States. While challenging, the pinnacle is ...

A woman hiking alone on a remote mountain in the rugged Eastern Sierra was badly injured after a fall and needed rescue.

Nestled within McArthur-Burney Falls Memorial State Park about 60 miles northeast of Redding, this aquatic wonder sits far enough from California’s urban centers to feel like a discovery, yet remains ...

It is unclear whether the father and son reached the summit, but any travelers reaching altitudes of 8,000 feet — sometimes lower — are susceptible to altitude sickness and symptoms.

Zane Wach, 14, was taken off of ventilators during his ongoing medically-induced coma nearly a month after the boy wandered over an cliff on Mt. Whitney in a state of altitude-induced delirium.

California teen lost touch with reality, walked off Mount Whitney, dad says 'He was in an altered mental state, and I don't know what caused it' ...

Crews prepare to search for Taylor Rodriguez, 29, who went missing while attempting to summit Mount Whitney in California's Sierra Nevada mountains.

Taylor Rodriguez, a San Antonio resident, drove to Mount Whitney in California from Texas for a solo climb, reports say. Photo by Nico via Unsplash A 29-year-old Texas man who tried to climb icy ...