Our blogger Rachel Moody ran the State Capitol Half-Marathon in 2:09:12 averaging 9:52 per mile on a very hilly course about 21 days and 18 hours prior to delivering a full-term healthy baby boy that weighed 7 lbs 1 oz.http://radrunning.fastrunningblog.com/blog-05-31-2010.html
This establishes a virtual pregnancy standard for men that cannot do it. Men that cannot run 2:09 half or a shorter distance at that pace - be aware that you are virtually 9 months pregnant! Start training.
In fact, we must also mention Rachel's Ogden half in 1:58:06 16 days earlier, so 37 days and about 18 hours away from delivery, which establishes a tougher standard for unfit men to be considered virtually pregnant without reducing very much how far along they are.
"And woe unto them that are with child, and to them that give suck in those days!"
...except Rachel, she'll flee on foot just fine.