Long run the day before long ride?

You'll probably find it to be 50/50 on here.  There have been several debates on the subject and it seems to be pretty evenly split.  Good thing about doing the bike 2nd day (IMO) is that you get the long run over with and it is easier to do the bike on tired legs rather than have tired legs then doing the long run the 2nd day. 

I say if you can get to run with a group on the first day then by all means do that and save the bike for the 2nd day.

I have consistently done the long run on Sat and the long ride on Sun.  I do run after every long ride on Sun but only for a short while (30 - 45 minutes) so that my body is accustom to running after riding.  Several times per training period I will eliminate the Sat run and brick it together on Sun.  The Fink plans dont really do much of this but I like to every now and then.  There is a greater chance for injury so Im keeping the full-out bricks to about once every 6 weeks. 

The 'quality' of your long ride is likely to be lessened doing it this way.  Of course, doing it reversed, the 'quality' of your long run is lessened. 

How important is that?  Probably marginal in the grand scheme.  I do much prefer to seperate the two (e.g., do a mid-week long run and a weekend long ride)--just as I try to seperate any of my 'quality' workouts to provide adequate recovery between them.  But if that schedule works well for you and you are able to maintain consistency week-in and week-out, then you'll be just fine come race day.  As others noted, alternating weekends of 'big ride'/'big run' is another option to consider (especially if doing two 'big' workouts starts impacting your weekday workout plans).

I look at the weather forecast on Friday. Which ever day (Saturday or Sunday) look better that becomes the long bike day. I much prefer to run in bad weather than biking in it. By using this method over the course of a 20 week plan I get a nice mix of run first and bike first. It works for me and is a pretty simple formula. Of course if both days look bad you can flip a coin!!

Whatever method you decide to choose, I agree with some others that the real key is getting the workouts in consistently not which one comes first.

WINNER!