O'Fallon, Missouri to Roswell, New Mexico: Road Trip Guide & Distance

How far is O'Fallon, Missouri from Roswell, New Mexico?

The distance from O'Fallon, Missouri to Roswell, New Mexico is 856.5 miles (1378.4 km) as the crow flies. Roswell, New Mexico is located WSW of O'Fallon, Missouri. By car, the driving distance is approximately 1027.8 miles, taking about 20h 41min. A direct flight would take roughly 2h 13min. Both are located in United States — O'Fallon, Missouri in Missouri and Roswell, New Mexico in New Mexico.

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. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare. For a trip of this distance, flying is significantly faster. However, driving offers the flexibility to explore stops along the way.

Coordinates come from public place data for O'Fallon, Missouri and Roswell, New Mexico. 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.