via I-40
The drive from Knoxville to Chattanooga takes approximately 1h 45min, covering 110 miles via I-40. Under normal conditions, expect to spend around $12 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 2–3+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
For this shorter drive, the best time to go is weekday mid-day. Rush hour (7-9 AM and 4-7 PM) can add significant time on this route. Weekends are generally smoother unless it's a holiday.
Plan rest stops every 2-3 hours on longer drives. Check traffic conditions before departure and keep your tank above quarter-full.
This trip can typically be done on a single tank of gas.
Estimated times and prices. Bus/train availability varies by route. Driving gives the most flexibility for stops and schedules.
The journey from Knoxville to Chattanooga stretches 110 miles along I-40 and typically takes 1h 45min to complete. At today's fuel prices, expect to spend around $12 on gas. Departing during weekday mid-day gives you the best chance of avoiding congestion along the way.
The 110-mile distance makes this a proper road trip. Start with a full tank, grab a coffee for the road, and enjoy the changing scenery as you make your way from Knoxville to Chattanooga.