A trip to Flagstaff for a conference, which lined up with the fall break in my teaching schedule, gave me a chance to do some extra traveling in the southwest over the last few days. I flew into Las Vegas, drove via southern Utah and northern Arizona to Flagstaff. After the conference, I drove to Phoenix. I had a day (today) to take a long loop over into southeastern California: basically I-10/CA 78/CA 111/I-8/I-10. I will fly back home out of Phoenix in the morning. I put over 1200 miles on the rental car.
Many of those miles were new TM mileage for me, getting me about 780 miles here.
By region: a little over 500 miles new in Arizona, over 150 in California, about 80 in Nevada, and 32 in Utah.
By system: just short of 400 miles in usai (mostly I-8 and I-10, some I-11 even though it was never mentioned on a sign anywhere on the part I drove, and giving me all of I-10 except 120 miles east of San Antonio), 5 miles in usaib (first travels on I-8 BL Yuma), 13 in usasf (first travels on Clark County 215), 115 miles in usaus, 83 miles in usausb (first travels on US 89A), 60+ miles in usaaz (first travels on 5 routes, 2 new clinches), almost 100 miles in usaca (first travels on 2 routes), 17 miles in usanv (first travels on 3 routes, 1 new clinch), 32 miles in usaut (first travels on 3 routes, 1 new clinch), and about a block in usaush (1 new route).
With all of that, I picked up just one new county: Yuma, AZ.