San Diego, Texas is close to the interstate highway I-20. It is neighboring other cities: Benavides, TX (10.9mi/26m ); Rancho Alegre, TX (21.9mi/39m ); Ben Bolt, TX (28.3mi/47m ). You can get to the city from exit 34 of i37 (55.1mi/1.4h ); exit 31 of i37 (71.6mi/1.6h ); exit 36 of i37 (62.1mi/1.6h ). San Diego, Texas can reach interstate highways: i37 (55.1mi/1.4h ); i35 (99.5mi/2.1h ); i410tx (144.5mi/2.9h ). It is also close to local highways: TX FM 3196 (18.1mi/39m ); TX 359 (5.8mi/18m ); TX 339 (15.8mi/34m ).