Yes!
On a perfect Saturday morning for a long run around White Rock Lake (60 degrees and clear skies) and after plodding along for months at a slow pace to avoid an overtraining injury after years of lethargy, this ancient runner felt so good that he reeled off mile after mile at sub-10 minute pace and averaged 9:48/mile for the entire 10-mile run.
I had planned to run about 11 minute/mile pace for the 10 miles and to start out at 12 minute pace for the first 2 miles (until I warmed up). However, at first I could not make out the mile markers in the dark and when it was light enough to see the markers and calculate my pace, I discovered that I had done the first 3 miles in about 10:30 minute/mile pace (when I felt like I might be going slower than 12 minutes/mile). I tried to coast the next 5 miles at about 10:00 to 10:15 pace, but I found it impossible to run slower than about 9:40/mile. By the time I had done 8 miles, I felt so strong that I ran the last 2 miles @ 9:05/mile pace to finish in a total time of 1:38:00.
For once I did not look like a shuffling grandpa and I passed many runners (including several younger runners)!
The funniest part of my run came with about 3-4 miles to go when I reached the Dallas Arboretum and discovered that Luke's Locker and the Arboretum were sponsoring 5K and 10K races -- with hundreds of runners clogging the path as they waited for the races to start 15 minutes after I passed. I was forced to wade through the oblivious mob for about 2 minutes (and stop my watch), mostly running on the slope of a ditch full of muddy water. Once past that clueless group, I ran as the wind.
Barring an injury or illness, I will be ready to survive the Tyler Half on October 11 -- just 19 days from now.