Live Chat I-35 Community Nearby Traffic TX 21 2024-06-05 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to TX 21 Martindale, TX 5.57 San Marcos, TX 10.74 Kyle, TX 12.18 Interstate highway exits close to TX 21 Exit 208, i35 6.59 Exit 206, i35 7.40 Exit 210, i35 7.86 Interstate highways close to TX 21 i35 map 6.59 i10 map 29.89 i410tx map 67.73 State roads close to TX 21 TX 21 map 3.24 TX 142 map 3.62 TX 80 map 4.07