"Other reviewers are correct: Angel Island is great. Dress in layers, wear sunscreen, and expect that it can be crowded on warm weekends.
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Cycling around the island is a perfect "medium" difficulty ride for kids and beginning cyclists. There are no cars to worry about, and you've got a nice loop of smooth pavement around the island. Beginners can complete the 5 mile loop in about an hour.
Our diverse group completed the perimeter trail and inner perimeter in three hours, enjoying lots of breaks to take-in-the view and a stop midway to have lunch.
Going clockwise around the island, there's a small climb at the beginning to get up to the trail from the ferry dock. After that it's rolling hills and flats, with one more 1/4 mile climb about 3/4 of the way around.
There is a second much shorter perimeter trail higher up the mountain. It's not paved, but can be ridden on a road bike if you're so inclined. On our ride, the more experienced cyclists did the inner loop while the others took a 10 minute water break in the shade."
Visited on Aug 14, 2008