I did the run yesterday from Chandler AZ to the Trinity Site. Left at midnight and got there a little before 9am New Mexico time. Finished at 8:15pm after fooling around and taking the time to look at things. A nice day for a ride, low 50s after Tucson and I was comfortable with my heated gear. The temperatures eventually got into the mid 80s later in the day. Waited in line at the gate a little over 30 minutes then it was smooth sailing. Spent about two hours looking around, there was a lot of interesting information. Google maps doesn't like restricted roads. Change it to walking from highway 380 and it will do the route with no problem, go figure.
https://goo.gl/maps/FAvZjvXYk4A2 You need to do two separate links, one driving to get there the other to the site and back to the highway. Mine showed 50.2 miles for Trinity and 977 miles to get there and back home. The total was 1027 adding the two map links and my GPS agreed. Looks like I left a little before Steve arrived, didn't meet any other IBA riders while I was there. Wearing a Mile Eater shirt and IBA ball cap I would have been easy to spot. On the way home I had the additional task of stopping at Apple Annie's Country Store in Willcox. The wife wanted a couple of half gallon bottles of Apple Cider. West of Benson I got off the Interstate and waited a half hour for the sun to go down. Cars and trucks were starting to weave all over the road and I was driving with one hand holding the other up to block the sun, not a good idea. Overall an easy ride without too much traffic.
Unless the riders Steve spotted were doing a Bun Burner Gold there is no reason to get in a hurry for a SaddleSore. Between the Trinity Site, the Country Store, and waiting for the sun to go down was around 3.5 hours. Had I not stopped my average speed would have been 62 mph. Instead of taking 16.75 hours it took me 20.25 hours, I averaged 50 mph for the day and had plenty of extra time. Learned a few things and had some nice conversations with other people.