I-70 Colorado now in March ok?

So you drive strictly in Texas?

 

True that. I've encountered 8% grades in Texas on paved roads, more than that on dirt.

Pretty much every state we think of as "flat" has hills that are steep.

 

A lot of people think Ohio is flat. Wait til they get on some of the 2 lanes in the south eastern part of the state. In for a surprise

 

Actually if a person were to google US elevation map they may find something like THIS. If you study this map you will see there are really very few flat area's in the US.

 

Just go downhill problem solved plus you will get better MPG!

 

The other question you need to consider besides weather before running I-70 through Colorado is weight. I never run through Vale heavy. It's just too steep.

 

Then you’re good to go on I70.
Several safe heaven’s too.

 

I just ran east bound on OH-32 and US-35 a few days ago at 110K gross. Tell me about it. Pulling uphill from a standing start from a traffic light I was lucky to get into high range.