here's an entry from Buckley's log, aug 6 2006 (weight 181#). Thought that might cheer you up. Weight isn't everything.
Running race (Mix) 31:20  5.0 mi (6:16 / mi) vdot: 52.9
St. Charles Flat Five. Not terribly hot (low 80's), but humid enough that I had to back off in the middle section. Was able to lift the pace in the last mile when we got on the Katy Trail because it was shaded. Not too bummed - it just wasn't a day for a great time. Only 4 runners under 30:00; in past years there have been more like 10. 8th overall, 1st 40+
yes that cheers me up . . . doesn't he weigh in at ~160 and change? so he dropped about 20 lbs in 10 yrs!
simple physics is the human body goes faster at lighter weights . . . up to a point where muscle is depleted enough to slow it down. I have not found that point yet, haha! at my current height, I weighed in at 132 lbs my fresh year of college! not likely to see those days again, of course, I hulked out at 165 by senior year, probably closer to ideal race weight.
actually I think I remember him talking about winning Clydesdale races (200+) at one time. I should ask him about his experience.
The shorter the distance, I think, the less it plays a factor. I see some sprinters at masters events that are very heavy, as in pot-belly etc.
Yes even in 5k ... always amazed ... still I have no excuse to stay heAvy ... im hoping this scope fast willshock my system into better eating