How long is the drive?

The drive takes about 19 hours of active driving time.

No, there is no direct passenger rail service to Great Falls.

What is the best route?

The route via I-25 and I-15 is the most reliable.

Is Great Falls worth visiting?

Yes, it is a historic city with great outdoor access.

No, there are no major toll roads on this route.

Santa Fe

Great Falls

Driving

Santa Fe to Great Falls

Updated: 29 May 2026

The drive from Santa Fe to Great Falls is a long 1,750-kilometer journey. You will travel north on I-25 through Colorado and Wyoming, then transition to I-15 North in Montana. The trip typically takes 18 to 20 hours of driving time. This route takes you through the heart of the Rockies and the high plains of Montana. It is a journey that requires careful planning and preparation.

Total Distance: 1,750 km driving distance; 1,400 km straight-line air distance.

Fastest Way

Driving is the fastest practical method for this route.

Cheapest Way

Driving is the most economical way to make this long-distance trip.

Compare Santa Fe to Great Falls Routes

Driving

Direct

Duration

19 hours

Avg Price

$270-$380 in fuel

Operator

Personal Vehicle

Route

I-25 N to I-90 W to I-15 N

Plan for at least one overnight stop in Casper or Billings.

Travel Tips

Overnight
Break the trip into two or three days to avoid fatigue.
Weather
Be prepared for sudden weather changes in the mountains.
Fuel
Keep your tank full in rural areas.
Wildlife
Be cautious of large animals on the road at night.
Supplies
Carry extra water and food for remote stretches.

Safety Tips

Fatigue
Stop frequently to stretch and stay alert.
Emergency
Carry a satellite messenger or emergency beacon if traveling in remote areas.
Vehicle
Check your brakes and tires before starting this mountain-heavy route.
Communication
Download offline maps for the entire route.