Total time of 49:16 for approximately 7 miles.
I ran mostly the same route that I ran on Saturday, except during a portion of the run near the halfway mark where I turned right instead of left to run up a moderately steep uphill grade instead of running on a mild downhill grade. I noted that without really trying to run more quickly than I ran on Saturday, I was running a fair amount faster. This made me curious, as I felt like I had to work harder than I anticipated during my fast mile on Saturday, so I decided to run the same mile fast again.
My little experiment was interesting, as according to my watch I ended up running this mile about 17 seconds faster than I did on Saturday (6:02 vs. 6:19, with approximately 50 ft elevation gain, plus the suspicion that this is actually longer than a mile), however I feel like I was breathing much easier throughout, and I definitely felt fresher at the end. Unfortunately I can't really come to any conclusions about things, as neither effort was maximal, the HR monitor on my watch is garbage so I can't say for certain that my HR was lower, while today I also knew what to expect and I was watching my watch more closely than I was on Saturday to make sure that there were no lapses in concentration. Oh well, at least I felt good running today, as I haven't been able to say that regularly lately.