Sub 6 hour Bike leg-Training

Not that I've done this myself, but I'm guessing those that can do this, *without* blowing up for the run have spent a lot more than 16 weeks getting there.

What kind of shape are you in now?  Do you have any 1/2 IM times to use as a starting point ( going off the assumption this would be your first IM )?
 

-Chris 

Can you go out right now and ride 112 miles in 5:45 (19.48 mph)?  That's moving pretty good, and if you can over the specific terrain of the IM course, then you might have a chance.  I might be able to do a 6:00 IM in Florida...Lake Placid is probably a pipe dream.  Speed lost on the uphills can't be totally regained on the downhills.

A lot will depend on the course.

Maine - 2006-04-03 7:07 AM I have been working out all winter, and this will be my 3rd IM. I am in the 6:30 range right now for an IM and close to 3:00 on a half. From what I have seen online I think I answered it myself, medium distance( 30 to 50 miles) several times a week at race pace and a long ride on the weekend for endurance. I will let you know how it works out Thanks Chris

Ride lots is good advice.  I rode lots last year, and while I didn't do an IM I put out a 2:45 1/2 IM bike split ( and was well within myself, and still able to run the entire run on a very hot day ).  I'll be doing more of the same this year, as I work up to IMWisco.  

I'd suggest that you've got a good idea there of a couple rides during the week, and a long ride on the weekend.  I'd also suggest that one of the shorter rides during the week to rider harder than race pace, really push it.  The other big thing is consistency.  Stick to that plan for several months, and it'll really pay off.

There's a wealth of good training info here and on other sites ( Gordoworld is another ).  If you're a member here, there's lots of training plans.

Good training!  

-Chris