What is the best route from Calgary to Boise?

Answer 1

1. Take HIGHWAY 2 SOUTH to the COUTTS PORT-OF-ENTRY. Follow signs to the Canada/U.S.A. Border and I-15 from there. Specifically, you will be taking HIGHWAY 2 SOUTH to HIGHWAY 3 EAST, then continue on HIGHWAY 3 EAST to HIGHWAY 4 SOUTH to Coutts.
2. Cross at the border into Sweetgrass, Montana, U.S.A. from COUTTS, Alberta, Canada. When you cross the border, you will be on I-15.
3. Stay on I-15 SOUTH through Montana to I-86 WEST to CHUBBOCK and TWIN FALLS at EXIT 72 in IDAHO.
4. Take I-86 WEST to I-84 WEST to TWIN FALLS.
5. Take I-84 WEST to Boise.

Answer 2

I've made the trip several times and it seems that driving the #1 west to the #93 -then turning onto #95 for a south shot to Coeur D'Alene, ID -saves 30-45 min. on the trip time versus the #2/#22x/#3 route S from Calgary. Hit I-90 W at Coeur D'Alene. Watch out for wildlife! You cross at Kingsgate.

They are about the same distance, and both are spectacular routes, but the #2/#22x/#3 is often a slow go. Now that BC has finished upgrading most of the #3 thru to Cranbrook it may be a bit faster but construction delays are common.

If you are doing a return trip and not in a hurry I'd recommend trying each route.

Rob from Calgary

Answer 3

607 km - about 7 hours 19 mins driving time.

Calgary, AB, Canada to Kelowna, BC, Canada.

1. Head north on Centre St NW toward 7 Ave NE 1.3 km

2. Turn left at 16 Ave NW 120 m

3. Continue onto HWY-1 W

Entering British Columbia 478 km

4. Turn left at HWY 97A 65.6 km

5. Continue onto Pleasant Valley Rd 450 m

6. Continue onto HWY 97 61.1 km

Kelowna, BC, Canada.