Distance between cities › USA › South Dakota › Herreid, SD › Distance from Herreid to Opal Book Hotels

Distance from Herreid, SD to Opal, SD

Distance

179 mi

Time

4 hours 39 mins

Gas Cost

$16 - $31

There are 132.68 miles from Herreid to Opal in southwest direction and 179 miles (288.07 kilometers) by car, following the SD 20 route.

Herreid and Opal are 4 hours 39 mins far apart, if you drive non-stop .

This is the fastest route from Herreid, SD to Opal, SD. The halfway point is Firesteel, SD.

Please note the time difference between Herreid, SD and Opal, SD is 1 hour. The current time in Herreid is 11:12 am and the current time in Opal is 10:12 am.

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Lowest Price Rental Cars in Herreid, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Herreid »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 7.18 gallons of gas to cover the route between Herreid, SD and Opal, SD.

The estimated cost of gas to go from Herreid to Opal is $22.51.

During the route, an average car will release 140.69 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 Herreid, SD and Opal, SD

If you want to meet halfway between Herreid, SD and Opal, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.428059 and -101.281120, or 45º 25' 41.0124" N, 101º 16' 52.032" W. This location is 89.40 miles away from Herreid, SD and Opal, SD and it would take approximately 2 hours 19 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Firesteel, SD, situated 89 miles from Herreid, SD and 90 miles from Opal, SD. It would take 2 hours 12 mins to go from Herreid to Firesteel and 2 hours 43 mins to go from Opal to Firesteel.