Peak at the Flowers
Hike at Mount Diablo for Big Views and Seasonal Hues
Terrific views and vibrant hues define this 4.8-mile out-and-back journey at Mount Diablo State Park.
From the Junction Road Picnic Area, start up Junction Trail, then turn left onto Summit Trail to begin the ascent. Fragrant sagebrush mingles with showy warrior’s plume blossoms along this early stretch.
As the trail steepens, Mount Diablo rolls out the purple carpet. Lupine, blue witch nightshade, blue dicks, common stork’s-bill, bunchleaf penstemon, and Brewer’s rockcress add gorgeous pops of violet along the rocky terrain.
At the intersection with Summit Road, cross and continue on Summit Trail. After passing the outhouse, sharp-eyed hikers may notice shrubs and trees still bearing burn marks from the 2013 wildfires. Here, the palette shifts warmer, with bright orange California poppies, goldenbush, and sunny sand dune wallflowers.
At the junction with Mary Bowerman Trail, turn left onto the rocky path, then right onto Summit Trail to reach the summit of Mount Diablo. At 3,849 feet, the views stretch across the Bay Area—from the Sierra Nevada to the Golden Gate Bridge, and even Mount Lassen.
The summit was once rumored to have one of the longest views in the world, second only to Mount Kilimanjaro. Though that claim was debunked in 1994, standing at the top makes it easy to see why.
Explore the Summit Visitor Center, with interactive exhibits, viewing platforms, and a photo op at the mountain’s true high.
NOTE: Check temperatures before heading out and start early to avoid mid-day heat—especially on exposed hikes. Excessive heat can be dangerous. Rattlesnakes are more active in warmer weather and may be present on trails, so stay aware of your surroundings and watch where you step.
Story and photos by Heather Werner, @heath.er.wer.ner
