Might be a little confusing to read, but here's US Xpress's regional/48 states pay scale, straight from a recruiter.
The rate goes like this: The farthest left rate is 0-300 miles, the next one is 301-600 miles, the next is 601-900, the last is 901+
0 Months 0.35 0.35 0.32 0.25
3 Months 0.37 0.37 0.33 0.28
6 Months 0.37 0.37 0.33 0.30
1 Year 0.41 0.37 0.34 0.32
2 Years 0.415 0.375 0.345 0.33
3 Years 0.42 0.38 0.35 0.34
4 Years 0.425 0.385 0.355 0.35
5+ Years 0.43 0.39 0.36 0.36
I would have made it look a bit prettier, but I didn't feel like busting out my HTML book