I love this thread too! I am now doing around 7.2k 4 times a week. My best time is 38 minutes. The difference in how I feel is amazing and becoming a bit addictive.

It's great for maintaining a pma!

Me - 44 Husband - 47
D20, S18
BD - Aug 2013
Moved out - Jan 2014
OW discovered Jan 2014