Flag Hill Loop Trail

HARD 3 reviews

Flag Hill Loop Trail is a 3.7 mile moderately trafficked loop trail located near Sunol, CA that features beautiful wild flowers and is rated as difficult. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail.

3.7 miles 1022 feet Loop

dog friendly

birding

hiking

nature trips

trail running

walking

forest

views

wild flowers

wildlife

scramble

A short, steep hike up Flag Hill promises grand scenery and offers a great way to introduce your kids to hiking. Sunol Regional Wilderness is one of the best hiking locales in the East Bay hills northeast of Silicon Valley. This Flag Hill Loop is one of the best ways to see Sunol. This loop is relatively short at 3.7 miles, but it's no cakewalk: Flag Hill summit is 1.3 miles and 900 feet above the Sunol headquarters. It's a tough climb, but it's over soon enough to suit youngsters' short attention spans. The view from the top is one of the best in the Bay Area, well worth the climb. In springtime, the hills are popping with California poppies and many more wildflowers. Once you've soaked up the view from Flag Hill, it's all downhill back to the park headquarters.

1 year ago

Hiked this loop today with 6 kids and 3 adults. Kids in the age group 5 - 9 all made a without too much trouble. We even carried our 2 month old up with us as well. It's a beautiful hike, quite steep uphill, with spectacular views. One of my favorite hikes in the Bay Area now.

3 years ago

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3 years ago

In springtime, the hills are popping with California poppies and many more wildflowers. Once you've soaked up the view from Flag Hill, it's all downhill back to the park headquarters. Tips: Use extreme caution on the rocks at the Flag Hill summit -- a fall could be fatal. Watch for poison oak on narrow sections of trail. There will be cattle at Sunol -- give them plenty of distance. What to bring: Water Sunscreen Camera Map from the park HQ