how far is chattanooga from atlanta

Chattanooga is roughly 115–125 miles (about 185–200 km) from Atlanta by road, which usually means about a 2 to 2.5 hour drive each way in normal traffic.

Most travelers take Interstate 75 (I‑75) north from Atlanta toward Chattanooga, since it is the most direct and commonly used route. If you look at point‑to‑point or “as‑the‑crow‑flies” distance, it comes out closer to about 104–106 miles (around 167–171 km), but driving distance is a bit longer because of the actual highway path.