I-70 thru Kansas City

KC traffic at 10 in the morning isn't too bad. 435 would be a long way around. Just watch the signs and speed limit is lower through town. Down town KC isn't that big compared to ST. Louis. 670 is a faster cut through but just a little bit trickier but not too bad.

p.s. nice RV park on east side of town, Blue Springs

http://www.makeyourdayhere.com/Facilities/Facility/Details/Blue-Springs-Campground-37