Decatur, Alabama to Great Smoky Mountains: Road Trip Guide & Distance

209.3 miles 336.9 km · straight line
261.7 miles estimated 421.1 km · driving distance
5h 16min estimated drive time
$25 - $31 estimated fuel cost
~55min flight time
70° ENE bearing direction

How far is Decatur, Alabama from Great Smoky Mountains?

The distance from Decatur, Alabama to Great Smoky Mountains is 209.3 miles (336.9 km) as the crow flies. Great Smoky Mountains is located ENE of Decatur, Alabama. By car, the driving distance is approximately 261.7 miles, taking about 5h 16min. A direct flight would take roughly 55min. Both are located in United States — Decatur, Alabama in Alabama and Great Smoky Mountains in Tennessee.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility.

Coordinates come from public place data for Decatur, Alabama and Great Smoky Mountains. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.

How to Get from Decatur, Alabama to Great Smoky Mountains

Method Time Est. Cost Best For
Drive 5h 16min $25 - $31 Flexible stops
Fly ~55min $80–200* Speed
Bus ~6h 19min $21–$39* Budget
Train ~5h 0min $31–$92* Comfort

Suggested Stops Between Decatur, Alabama & Great Smoky Mountains

Quick Facts

Decatur, Alabama
34.61°N, 86.98°W
America/Chicago
171m elevation
Great Smoky Mountains
35.61°N, 83.49°W
America/New_York
2025m elevation
Explore more routes from Great Smoky Mountains

Did You Know?

  • At walking speed (3 mph), it would take about 70 hours of non-stop walking
  • By bicycle at 12 mph, the journey would take roughly 17 hours
  • You could travel this distance about 119 times to circle the Earth's equator
Data Sources & Estimate Notes GeoNames · OpenStreetMap · Driving distance estimated using road factor coefficients