How far is rockwall tx from tyler tx?

76 miles taking this route:

1. Take I-20 WEST to SH-205 NORTH via SH-557 (EXIT 499A off I-20 - signed as TO U.S. 80 WEST to DALLAS) and FM-148. (Take the first EXIT off of SH-557. Turn right off the frontage road onto FM-148 NORTH, then take FM-148 NORTH to SH-205 NORTH. Go STRAIGHT.)
2. Take SH-205 NORTH to Rockwall.