Distance between cities › USA › South Dakota › Custer, SD › Distance from Custer to Saint Johns Book Hotels

Distance from Custer, SD to Saint Johns, AZ

Distance

1,042 mi

Time

18 hours 23 mins

Gas Cost

$98 - $191

There are 710.02 miles from Custer to Saint Johns in southwest direction and 1,042 miles (1,676.94 kilometers) by car, following the I-25 route.

Custer and Saint Johns are 18 hours 23 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Saint Johns, AZ. The halfway point is Walsenburg, CO.

Please note the time difference between Custer, SD and Saint Johns, AZ is 1 hour. The current time in Custer is 12:46 am (Mar 13) and the current time in Saint Johns is 11:46 pm (Mar 12).

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Saint Johns, AZ? Here there are some offers to rent a car in Custer, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Custer »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 41.87 gallons of gas to cover the route between Custer, SD and Saint Johns, AZ.

The estimated cost of gas to go from Custer to Saint Johns is $137.78.

During the route, an average car will release 820.24 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.29 per gallon of regular gas. Price last updated on March 13, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Saint Johns, AZ

If you want to meet halfway between Custer, SD and Saint Johns, AZ or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 37.569260 and -104.711006, or 37º 34' 9.336" N, 104º 42' 39.6216" W. This location is 521.23 miles away from Custer, SD and Saint Johns, AZ and it would take approximately 9 hours 11 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Walsenburg, CO, situated 526 miles from Custer, SD and 517 miles from Saint Johns, AZ. It would take 8 hours to go from Custer to Walsenburg and 8 hours 18 mins to go from Saint Johns to Walsenburg.