Distance between cities › USA › South Dakota › Hermosa, SD › Distance from Hermosa to Keystone Book Hotels

Distance from Hermosa, SD to Keystone, SD

Distance

16 mi

Time

28 minutes

Gas Cost

$1 - $3

There are 11.95 miles from Hermosa to Keystone in northwest direction and 16 miles (25.75 kilometers) by car, following the SD 40 route.

Hermosa and Keystone are 28 minutes far apart, if you drive non-stop .

This is the fastest route from Hermosa, SD to Keystone, SD.

Hermosa, SD and Keystone, SD are in the same time zone (MDT). Current time in both locations is 3:09 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Hermosa, SD to Keystone, SD:

Lowest Price Rental Cars in Hermosa, SD

Planning on renting a car to go from Hermosa, SD to Keystone, SD? Here there are some offers to rent a car in Hermosa, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Hermosa »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 0.64 gallons of gas to cover the route between Hermosa, SD and Keystone, SD.

The estimated cost of gas to go from Hermosa to Keystone is $1.99.

During the route, an average car will release 12.44 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Hermosa, SD and Keystone, SD

If you want to meet halfway between Hermosa, SD and Keystone, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.866093 and -103.302795, or 43º 51' 57.9348" N, 103º 18' 10.062" W. This location is 7.91 miles away from Hermosa, SD and Keystone, SD and it would take approximately 14 minutes to reach the halfway point from both locations.