Discover the best things to do on a road trip from Castro Valley to Union City, CA. Explore camping in Anthony Chabot Regional Park, splashing at Aqua Adventure Waterpark, tea-tasting at Teance Fine Teas, and much more.

Plan a road trip from Castro Valley to Union City by exploring the cost of driving via different routes. Discover the distance, time and cost of each route in this blog post!

Discover the best routes to travel between Castro Valley and Union City, California, with different distances, driving times, and places to stop along the way. Enjoy scenic views of the bay and city.