Good Sam Club Open Roads Forum: Flattest Route to Coeur d'Alene, ID
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 > Flattest Route to Coeur d'Alene, ID

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Sooner Schooner

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Posted: 04/05/19 12:47pm Link  |  Quote  |  Print  |  Notify Moderator

We're looking for the flattest route from Las Vegas, NV to Coeur d'Alene, ID. Interstates are my first choice as we will be on I-15, but I have heard that there are some very steep grades coming from the south and east. Any advice is greatly appreciated. We are in a 40' diesel pusher with a car in tow.


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PNW_Steve

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Posted: 04/05/19 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

I have made that trip several times running US-95.

There are some hills but I have never had a problem.

I have run that route in a bus, a car and a truck when I moved up from AZ.

It is not a great winter route. Spring to Fall it is not a difficult drive.


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Airdaile

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Posted: 04/05/19 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

Flattest Route

Also, Google Earth has a profile feature that show elevation between 2 points.





hotjag1

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Posted: 04/05/19 01:19pm Link  |  Quote  |  Print  |  Notify Moderator

You didn't say when you are planning to go on this trip, but since you are on I-15 and prefer interstates, why not just take 15 up to I-90 and then west to CD'A. I think interstates have a maximum 8% grade with most around 6 to 7%.
Those percentages should be a relatively easy pull for a DP. We have done that route a couple of times and I think the steepest grade was 4th of July pass east of CD'A. It is a scenic area so going a little slower up the pass was nice for looking around a bit.

* This post was edited 04/05/19 01:25pm by hotjag1 *


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larry barnhart

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Posted: 04/05/19 01:22pm Link  |  Quote  |  Print  |  Notify Moderator

Sooner Schooner wrote:

We're looking for the flattest route from Las Vegas, NV to Coeur d'Alene, ID. Interstates are my first choice as we will be on I-15, but I have heard that there are some very steep grades coming from the south and east. Any advice is greatly appreciated. We are in a 40' diesel pusher with a car in tow.



If you can handle the traffic though Salt Lake city you can handle anything. I like Hot jags route.

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paulj

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Posted: 04/05/19 01:24pm Link  |  Quote  |  Print  |  Notify Moderator

US95 from the south has a couple of grades in Idaho, both climbing out of major river valleys (Salmon and Snake). They aren't steep by federal highway standards.

I15 has a broad pass on the ID/MT border, and meets I90 at Butte, a mountain top mining town. There are several passes I90, including on the MT/ID border.

US395 crossing Washington from S to NE is relatively flat, but has some hills in NC Oregon.

Sooner Schooner

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Posted: 04/05/19 01:24pm Link  |  Quote  |  Print  |  Notify Moderator

hotjag1 wrote:

You didn't say when you are planning to go on this trip, but since you are on I-15 and prefer interstates, why not just take 15 up to I-90 and then west to CD'A. I think interstates have a maximum 8% grade with most around 6 to 7%.

Leaving Las Vegas on April 12th.

2oldman

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Posted: 04/05/19 01:41pm Link  |  Quote  |  Print  |  Notify Moderator

Airdaile wrote:

Flattest Route

Also, Google Earth has a profile feature that show elevation between 2 points.
x2

bob213

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Posted: 04/06/19 11:01am Link  |  Quote  |  Print  |  Notify Moderator

Nice to see that Flattest Route is back!


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paulj

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Posted: 04/06/19 01:57pm Link  |  Quote  |  Print  |  Notify Moderator

Google Maps directions in bicycle mode shows a route profile. For various routes that I tried the total up and downs were about the same, with similar maximum elevations. But is the OP really interested that sort of thing, or the main concern the steepest single climb?

As others have said, freeways have grade standards (something like 6%). State and federal (non-interstate) have looser standards, but seldom differ significantly from that. It's local, county and forest service roads that can be steeper, and big RVs seldom choose those.

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