# Distance between Washington D.C. (IAD) and Rapid City, SD (RAP)

Flight distance from Washington D.C. to Rapid City (Washington Dulles International Airport – Rapid City Regional Airport) is 1368 miles / 2202 kilometers / 1189 nautical miles. Estimated flight time is 3 hours 5 minutes.

Driving distance from Washington D.C. (IAD) to Rapid City (RAP) is 1605 miles / 2583 kilometers and travel time by car is about 27 hours 11 minutes.

## Map of flight path and driving directions from Washington D.C. to Rapid City.

Shortest flight path between Washington Dulles International Airport (IAD) and Rapid City Regional Airport (RAP).

## How far is Rapid City from Washington D.C.?

There are several ways to calculate distances between Washington D.C. and Rapid City. Here are two common methods:

Vincenty's formula (applied above)
• 1368.036 miles
• 2201.640 kilometers
• 1188.790 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
• 1364.842 miles
• 2196.500 kilometers
• 1186.015 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

## Airport information

A Washington Dulles International Airport
City: Washington D.C.
Country: United States
Coordinates: 38°56′40″N, 77°27′20″W

B Rapid City Regional Airport
City: Rapid City, SD
Country: United States
IATA Code: RAP
ICAO Code: KRAP
Coordinates: 44°2′43″N, 103°3′25″W

## Time difference and current local times

The time difference between Washington D.C. and Rapid City is 2 hours. Rapid City is 2 hours behind Washington D.C..

EST

MST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 171 kg (377 pounds).

## Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Rapid City (RAP).

Distance:
1368
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1368

Round trip?