Castle Rock to Fort Smith: Road Trip Guide & Distance

636.2 miles 1023.9 km · straight line
763.5 miles estimated 1228.7 km · driving distance
15h 22min estimated drive time
$73 - $90 estimated fuel cost
~1h 47min flight time
112° ESE bearing direction

How far is Castle Rock from Fort Smith?

The distance from Castle Rock to Fort Smith is 636.2 miles (1023.9 km) as the crow flies. Fort Smith is located ESE of Castle Rock. By car, the driving distance is approximately 763.5 miles, taking about 15h 22min. A direct flight would take roughly 1h 47min. Both are located in United States — Castle Rock in Colorado and Fort Smith in Arkansas.

This is a serious multi-day road trip! We strongly recommend breaking this journey up with an overnight stay to ensure you arrive safely and refreshed. 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 Castle Rock and Fort Smith. 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 Castle Rock to Fort Smith

Method Time Est. Cost Best For
Drive 15h 22min $73 - $90 Flexible stops
Fly ~1h 47min $80–200* Speed
Bus ~18h 26min $61–$115* Budget
Train ~19h 59min $92–$267* Comfort

Suggested Stops Between Castle Rock & Fort Smith

Quick Facts

Castle Rock
39.37°N, 104.86°W
America/Denver
1897m elevation
Fort Smith
35.39°N, 94.40°W
America/Chicago
134m elevation
Explore more routes from Fort Smith

Did You Know?

  • At walking speed (3 mph), it would take about 212 hours of non-stop walking
  • By bicycle at 12 mph, the journey would take roughly 53 hours
  • You could travel this distance about 39.1 times to circle the Earth's equator
Data Sources & Estimate Notes GeoNames · OpenStreetMap · Driving distance estimated using road factor coefficients