I wish to cross over from Highway 99 to Highway 101 using Highway 41 from approximately Kettleman City to Atascadero would I have any problems towing a 40 foot 5th wheel. Thanks Michael
41 0r 46 is great - like bob said rolling hills - did it with my 24 ft trailer. 46 is prettier and you end up in paso - which has a nice rv park next to a winery: wine country rv.