Distance between Post Falls ID and Idaho Falls ID
The distance from Post Falls to Idaho Falls is 485 miles by road including 483 miles on motorways. Road takes approximately 7 hours and 55 minutes and goes through Coeur d'Alene, Missoula, Butte, Kellogg, Wallace, Superior and Deer Lodge.
| Shortest distance by air | 376 mi ✈️ |
| Car route length | 485.3 mi 🚗 |
| Driving time | 7 h 55 min |
| Fuel amount | 16.5 gal |
| Fuel cost | 64 USD |
| Point | Distance | Time | Fuel | |
| Post Falls | 0 mi | 00 min | 0.0 gal | |
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I 90 8 mi, 07 min
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| Coeur d'Alene | 8 mi | 07 min | 0.2 gal | |
|
I 90 35 mi, 32 min
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| Kellogg | 43 mi | 39 min | 1.4 gal | |
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I 90 13 mi, 11 min
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| Wallace | 57 mi | 51 min | 1.9 gal | |
|
I 90 58 mi, 52 min
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| Superior | 115 mi | 1 h 44 min | 3.9 gal | |
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I 90 58 mi, 51 min
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| Missoula | 173 mi | 2 h 35 min | 5.8 gal | |
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I 90 80 mi, 1 h 10 min
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| Deer Lodge | 253 mi | 3 h 46 min | 8.6 gal | |
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I 90 40 mi, 39 min
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| Butte | 293 mi | 4 h 26 min | 9.3 gal | |
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I 15 145 mi, 2 h 36 min
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| Dubois | 437 mi | 7 h 02 min | 14.7 gal | |
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I 15 47 mi, 53 min
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| Idaho Falls | 485 mi | 7 h 55 min | 16.3 gal | |
Hotels of Idaho Falls
Frequently Asked Questions
How much does it cost to drive from Post Falls to Idaho Falls?
Fuel cost: 64 USD
This fuel cost is calculated as: (Route length 485.3 mi) / (Fuel consumption 29.4 mpg) * (Fuel price 3.88 USD / gal)
You can adjust fuel consumption and fuel price here.
How long is a car ride from Post Falls to Idaho Falls?
Driving time: 7 h 55 min
This time is calculated for driving at the maximum permitted speed, taking into account traffic rules restrictions.
- 244 mi with a maximum speed 68 mph = 3 h 34 min
- 32 mi with a maximum speed 65 mph = 29 min
- 88 mi with a maximum speed 62 mph = 1 h 25 min
- 6 mi with a maximum speed 60 mph = 5 min
- 4 mi with a maximum speed 55 mph = 4 min
- 111 mi with a maximum speed 50 mph = 2 h 13 min
- 1 mi with a maximum speed 35 mph = 1 min
The calculated driving time does not take into account intermediate stops and traffic jams.
How far is Post Falls to Idaho Falls by land?
The distance between Post Falls and Idaho Falls is 485.3 mi by road including 483.4 mi on motorways.
Precise satellite coordinates of highways were used for this calculation. The start and finish points are the centers of Post Falls and Idaho Falls respectively.
How far is Post Falls to Idaho Falls by plane?
The shortest distance (air line, as the crow flies) between Post Falls and Idaho Falls is 375.9 mi.
This distance is calculated using the Haversine formula as a great-circle distance between two points on the surface of a sphere. The start and finish points are the centers of Post Falls and Idaho Falls respectively. Actual distance between airports may be different.
How many hours is Post Falls from Idaho Falls by plane?
Boeing 737 airliner needs 45 min to cover the distance of 376 mi at a cruising speed of 497 mph.
Small plane "Cessna 172" needs 2 h 45 min to flight this distance at average speed of 136 mph.
This time is approximate and do not take into account takeoff and landing times, airport location and other real world factors.
How long is a helicopter ride from Post Falls to Idaho Falls?
Fast helicopter "Eurocopter AS350" or "Hughes OH-6 Cayuse" need 2 h 31 min to cover the distance of 376 mi at a cruising speed of 149 mph.
Popular "Robinson R44" needs 2 h 52 min to flight this distance at average speed of 130 mph.
This time is approximate and do not take into account takeoff and landing times, aerodrome location and other real world factors.
What city is halfway between Post Falls and Idaho Falls?
The halfway point between Post Falls and Idaho Falls is Garrison. It is located about 1 mi from the exact midpoint by road.
The distance from Garrison to Post Falls is 242 mi and driving will take about 3 h 35 min. The road between Garrison and Idaho Falls has length 243 mi and will take approximately 4 h 19 min.
The other cities located close to halfway point:
Where is Post Falls in relation to Idaho Falls?
Post Falls is located 376 mi north-west of Idaho Falls.
Post Falls has geographic coordinates: latitude 47.71101, longitude -116.94809.
Idaho Falls has geographic coordinates: latitude 43.49352, longitude -112.04009.
Which highway goes from Post Falls to Idaho Falls?
The route from Post Falls to Idaho Falls follows I 90, I 15, US 12.
Other minor sections pass along the road:
- MT 200: 13 mi
- US 93: 5 mi
