it's definitely been done
I also did longer rides for years before becoming pregnant. I stopped mainly because I couldn't get any direct advice from a medical professional beyond the basics. I'm now 21 weeks along and anything beyond 2-2.5 hours feels like more than enough. But many say that whatever you've been doing routinely is safe to do while pregnant. You'll read in Clapp's book (and probably already know) that the most important things to keep in mind are consuming enough calories and fluids before during and after the ride, and getting enough rest depending on how long you work out. The longer you exercise, the more time you should set aside that day to take it easy, and if you feel like collapsing on your bed the minute you complete your ride you've probably worked too hard.
I cancelled two back to back 70 mile rides and an overnight stay in between with some friends the weekend I found out I was pg and I still wonder if it was necessary to do so. I was only 5 weeks along and felt great, and I was certainly running and riding at my regular levels before I tested positive... sigh. The minor sacrifices in the face of uncertainty are worth it I figure...
One of my colleagues trained for and ran the NYC marathon in her 14th week, so those epic workouts during pregnancy are possible. I know she followed the basic advice from Clapp's book mentioned above, but she had direct guidance from her OB as well. That really makes a difference.
You may want to search your community for a prenatal fitness specialist if your OB has only limited advice.
Good luck and congratulations!
Vigg
Trying to stay consistent
Thanks Vigg! I feel better now...and hope you'll stay in touch about how you're feeling and what you're able to do.
What was so interesting to me about Clapp's book was the significant health benefits of continuing to exercise throughout one's pregnancy. I definitely started out fit--I think this kid was conceived the night before I competed in the NYC triathlon!
But it has been hard to stay motivated to run or bike with the tiredness and nausea..although the day after I work out, I feel those side effects much less.
So it's that challenge of backing off a bit (probably can't bike with my regular bike buddies any more, they make me go anaerobic..) but also getting out there consistently.
--Reenybeeny