Spring Valley Casino San Diego Convention CenterValley View CasinoSan Diego’s second closest casino is 25 miles or (40 kilometers) away from the heart of the city. It would take you around 35 to 50 minutes to drive to the Sycuan. After a quarter-billion dollar expansion completed in March of 2019, the Sycuan is now a full scale casino/resort, complete with a 12 story hotel tower with 300 rooms a..