I hope this doesn't qualify as "backsliding," but . . .

I'm thinking that instead of: (a) MS-150 on the weekend of 9/26, (b) 20 miles the next weekend, (c) 22 miles two weeks later, and (d) MCM two weeks later, a more realistic (and probably better) program will be: (a) MS-150 on the weekend of 9/26, (b) 10 miles the next weekend, (c) 22 miles the next weekend, and (d) MCM two weeks later.

So, I'm sure you're asking yourself, "But, Dad, what prompted this rather shocking turn of events?" Ah, yes, the wisdom of that question far surpasses your relative youth. I salute you for it, and encourage you to continue on this grand path to knowledge and sagacity. Salute!