It's as official as it's going to get: the raceAthlete B-Fit B-Day Challenge is adding a run-only version based partly on my input. You still have to run your age, but they decided to keep the original Gold/Silver/Bronze time limits of one/three/seven days. I have no plans to be an elite endurance runner this year, so I'm picking the Silver Challenge. My birthday's on a Monday, so I will have the weekend to go long; Saturday 5/31 would be my first 20-mile run ever. Then I can go easy on Sunday 6/1 and finish up with 10 or so on 6/2.
I have no races in April or May, so I can run the big 37 and recover/train for either a hard 20K on June 21 or a 10-miler on July 4.
Although my original idea was to run within the same number of hours as birthday miles (for Gold, or double/triple for Silver/Bronze), keep in mind that this is really an endurance challenge and we want Gold to be hard. I think up to about 50 years/miles in a day is about the limit, but it will be interesting to see who takes on the Gold Run-Only Birthday Challenge.
I was member #62; here's my profile: http://bfitbday.ning.com/profile/DaveM