[ccjohnson]

There are a couple of grades, but nothing at all like on I-17 out of Phoenix. There is a long slight grade north of T or C that can be a bit deceptive. Just keep an eye on temp & drop a gear or 2 and you will be fine. There is 1 grade dropping into & going out of a canyon but it is pretty short.It's well marked and you want to watch downhill speed because it is slightly curved at bottom.