Long Runs/Rides for Olympic Distance Racing

For Olympic Distance triathlon training, how long do you go on your long runs/rides when building your base and during the season?

For running:
Does anyone go much over 2 hours/16 miles?

I was thinking of having a 12-14 mile day (doubles) midweek and then running 1.75-2.00hrs on the weekend.

In Season is there much reason to go over 1.5hours12 miles?

For cycling:

During base it seams like going as long as possible as often as possible would be benificial.

Thanks,

Matt