I do at least two most days. Here's my current schedule
Monday AM: 1/2-hour swim, 45-min. elliptical trainer
--------- PM: 17-mile bike, easy
Tuesday AM: 6-mile tempo run
--------- PM: 17-mile bike, hard time trial
Wednes.AM: 1/2-hour swim, 45-min. elliptical trainer
--------- PM: 30-mile bike, alternate easy and hard
Thursday AM: 8-mile run, moderate speed
--------- PM: 17-mile bike, easy
Friday AM: 1/2-hour swim, 45-min. elliptical trainer
--------- PM: 5-mile run, intervals
Satur.: 1/2-hour swim, 45-mile bike. This swim/bike brick is new, tried it for the first time last weekend. Prior to this I was doing a 70- to 100-mile bike ride
--------- PM: Nothing
Sunday AM: long run, last week 18-miles, next week 14, then 20, 14, 22, Tri, 20, 14, 8, Marathon
--------- PM: 24-mile bike, easy
(recovery
)