How far is Spearfish, SD from Watertown, SD?
Fastest route
The distance between Spearfish, SD and Watertown, SD is 332.33 miles (534.62 kilometers) by car, following the I-90 and US-14 E route. The drive time is approximately 6 hours and 18 minutes. The halfway point is Reliance, SD.
Here are some recommended routes from Spearfish to Watertown by car:
- Route 1: 6 hours and 18 minutes, 332.33 miles
- US-14 W
- I-90 W
- US-14 W
- Route 2: 6 hours and 23 minutes, 336.8 miles
- US-14 W
- I-90 W
- US-212 W
- SD-14 S
- Route 3: 6 hours and 37 minutes, 373.8 miles
- US-14 W
- I-90 W
- US-14 W
- SD-34 W
Distance by Flight
Shortest distance between Spearfish and Watertown is 332.35 miles (534.87 km).
Flight distance from Spearfish, SD to Watertown, SD is 332.35 miles. Estimated flight time is 00 hours 46 minutes.
It takes 00 hours 41 minutes to travel from Spearfish to Watertown with an airplane (average speed of 550 miles).
Driving distance
The driving distance from Spearfish, South Dakota to Watertown, South Dakota is: 383.99 miles (617.97 km) by car.
Driving from Spearfish to Watertown will take approximately 06 hours 36 minutes.
#1 Spearfish
City in Lawrence County, South Dakota, United States
| Population | 11900 |
|---|---|
| GPS Coordinates | 44°29'27"N 103°51'34"W |
| Latitude | 44.4908200 |
| Longitude | -103.8593700 |
| Altitude | 1112 |
| Country | United States |
#2 Watertown
City in and county seat of Codington County, South Dakota, United States
| Population | 22303 |
|---|---|
| GPS Coordinates | 44°53'58"N 97°6'54"W |
| Latitude | 44.8994100 |
| Longitude | -97.1150700 |
| Altitude | 528 |
| Country | United States |
Ending point in Watertown: South Broadway (-97.115008,44.899398)
Estimated Travel Time Between Spearfish and Watertown
The distance between Spearfish and Watertown is 618 km if you choose to drive by road. You can go 06 hours 51 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 Spearfish, SD and Watertown, SD. The current time in Spearfish is 04:43:02, although it is 05:43:02 in Watertown.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 12 hours 47 minutes |
| 40 mph (64.37 km/h) | 09 hours 36 minutes |
| 50 mph (80.47 km/h) | 07 hours 40 minutes |
| 60 mph (96.56 km/h) | 06 hours 23 minutes |
| 70 mph (112.65 km/h) | 05 hours 29 minutes |
| 75 mph (120.7 km/h) | 05 hours 07 minutes |
| 80 mph (128.75 km/h) | 04 hours 47 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 51.29 liters (13.55 gallon) of gas to cover the route between Spearfish and Watertown.
The estimated cost of gas to go from Spearfish to Watertown is $47.8 (diesel $63.93).
South Dakota gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.53 | $3.72 | $4.2 | $4.72 |
| Total | $47.8 | $50.36 | $56.91 | $63.93 |
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 (in South Dakota ) per gallon of daily gas for calculations is $3.528 (Diesel $4.718) /gallon. Last changed prices on April 24, 2024.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between Spearfish and Watertown (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
