Updated May 3, 2008.

Whether it’s raining, 100 degrees, or snowing (!) you’re likely to see someone hiking, mountain-biking, or running Rocky Peak road in  Rocky Peak Park. Switchbacking up from the 118 freeway, the fire road climbs along the spine of the Santa Susana mountains. It’s proximity to the San Fernando and Simi Valleys, and array of route variations, make it the choice of many for a morning or afternoon workout.

It’s not because it’s easy — the route is steep from the start, gaining 500 ft. in the first three-quarters of a mile, and 1200 ft. in just over 2 miles.

Following are some approximate one-way distances and elevation gains.

Hummingbird Trail: 0.8 miles 500 ft.

High point at turnoff to peak: 2.4 miles 1200 ft.

Johnson Motorway: 3.2 miles 1350 ft.

Chumash Trail: 3.8 miles 1390 ft.

Fossils: 4.8 miles 1800 ft.

Las Llajas Loop turnoff: 5.5 miles 1950 ft.

End of Rocky Peak Rd at Las Llajas Cyn Rd.: 6.3 2070 ft.

Related posts: Chumash Trail Snow, Oat Mountain Snow, Sunset Snow Shower.

Google search: $g(Rocky Peak), $g(Hummingbird Trail), $g(Chumash Trail)

Rock formations along the Backbone Trail in Malibu Creek State Park. This segment of trail is part of the Malibu Creek Trail Challenge and Bulldog 25K and 50K.

The final quarter-mile of the infamous Bulldog climb can be seen along the right skyline. I’d just struggled up that a few minutes before. An elevation gain of 1700 ft. in 3.5 miles sounds not-so-hard sitting in front of a computer, but the climb has few breaks and is longer and steeper than those figures convey.

The Bulldog climb is part of the ~14.5 mile Bulldog Loop — an excellent course that is popular among runners and mountain bikers. My Polar HRM says the elevation gain/loss on the loop is about 2700 ft., and a quick calculation using the elevation profile in Sporttracks gives a gain/loss of 2500-2600 ft. 

In 2004 Sal Bautista ran the slightly shorter version of the loop done in the Malibu Creek Trail Challenge in under 1.5 hours! Here’s a Google Earth image of a GPS trace of the Bulldog loop.