Shortest distance between Gregory and Spearfish is 237.12 miles (381.61 km).
Flight distance from Gregory, SD to Spearfish, SD is 237.12 miles. Estimated flight time is 00 hours 34 minutes.
It takes 00 hours 31 minutes to travel from Gregory to Spearfish with an airplane (average speed of 550 miles).
The driving distance from Gregory, South Dakota to Spearfish, South Dakota is: 285.74 miles (459.85 km) by car.
Driving from Gregory to Spearfish will take approximately 04 hours 24 minutes.
The distance between Gregory and Spearfish is 460 km if you choose to drive by road. You can go 05 hours 06 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.
Please keep in mind that there is a 1 hour time gap between Gregory, SD and Spearfish, SD. The current time in Gregory is 06:06:05, although it is 05:06:05 in Spearfish.
|Average Speed||Travel Time|
|30 mph (48.3 km/h)||09 hours 31 minutes|
|40 mph (64.37 km/h)||07 hours 08 minutes|
|50 mph (80.47 km/h)||05 hours 42 minutes|
|60 mph (96.56 km/h)||04 hours 45 minutes|
|70 mph (112.65 km/h)||04 hours 04 minutes|
|75 mph (120.7 km/h)||03 hours 48 minutes|
|80 mph (128.75 km/h)||03 hours 33 minutes|
A car with a fuel efficiency of 8.3 l/100 km will need 38.17 liters (10.08 gallon) of gas to cover the route between Gregory and Spearfish.
The estimated cost of gas to go from Gregory to Spearfish is $41.36 (diesel $48.89).
Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.
The average gas price per gallon of daily gas for calculations is $4.102 (Diesel $4.849) /gallon. Last changed prices on January 30, 2023.
The place names are translated into coordinates to approximate the distance between Gregory and Spearfish (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.