The travel length between Walnut and San Diego takes by bus around 3 hours and 54 minutes, and the approximate price for a bus ticket between Walnut and San Diego is $26.25. Traveling with a dog or cat? 2:49 pm (local time): arrive at the gate at SAN deboard the plane, and claim any baggage Downtown San Diego features one of the city’s most well-known attractions: Balboa Park. This 1,200-acre park is not only a great place for a bike ride or picnic, but also a place to admire the detailed Spanish-Renaissance architecture found on the grounds, like the California Building or the House of Hospitality. Compare the flight distance to driving distance from San Diego, CA to Walnut, CA.Calculate the total cost to drive from San Diego, CA to Walnut, CA.Or find out if it's better to fly or drive from San Diego, CA to Walnut, CA? Driving distance from Walnut Creek, CA to San Diego, CA is 485 miles (781 km). Flight distance is approximately 453 miles (729 km) and flight time from Walnut Creek, CA to San Diego, CA is 54 minutes.Don't forget to check out our "Gas cost calculator" option. View RV campgrounds between Walnut and San Diego. How far is it from Walnut Creek, CA to San Diego, CA? Find out how many hours from Walnut to San Diego by car if you're planning a road trip. Find out how many hours from San Diego to Walnut by car if you're planning a road trip. Best of all, getting from Walnut to San Diego is budget-friendly, with train tickets starting at just $21. Compare the flight distance to driving distance from Walnut, CA to San Diego, CA.Calculate the total cost to drive from Walnut, CA to San Diego, CA.Or find out if it's better to fly or drive from Walnut, CA to San Diego, CA? Information about the train from Walnut to San Diego. It's a 08 hours 10 minutes drive by car. Camping along the way? 2:46 pm (local time): San Diego International (SAN) San Diego is the same time as Walnut taxi on the runway for an average of 3 minutes to the gate. Train Walnut - San Diego Information about the bus from Walnut to San Diego. View pet-friendly stops between Walnut and San Diego. If you're planning a road trip to San Diego, you can research locations to stop along the way. Here's a sample itinerary for a drive from Walnut to San Diego. Please note that this information about the bus from Walnut to San Diego is approximate. The train is one of the safest modes of transportation in existence, and offers a comfortable atmosphere for you to relax on your journey from Walnut to San Diego.