San Marcos Texas Traffic 2024-10-05 Roadnow Click for Real Time Traffic Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to San Marcos Texas McQueeney, TX 10.05 mi Marion, TX 14.88 mi Seguin, TX 16.43 miInterstate highway exits close to San Marcos Texas Exit 190a, i35 0.84 mi Exit 189, i35 0.92 mi Exit 190b, i35 1.33 miInterstate highways close to San Marcos Texas i35 map 0.84 mi i10 map 16.85 mi i410tx map 34.21 miState roads close to San Marcos Texas TX FM 725 map 0.84 mi TX LOOP 337 map 1.10 mi TX 46 map 1.29 mi