^^^^^^
I guess not all TSS is created equal. This ride was TSS: 437.4 (intensity factor 0.797):

http://bimactive.com/ba/journal/post/10783/19762

...over 100 miles and I was ready to come back for another century the following day. Unfortunately, the second one got cancelled by the ride leader, but I was at the ride start... waiting.

Perhaps, I should try the graduated compression tights. Maybe, I'll recover quicker than I am.