My general week to week schedule when I was training for long course tri was:
Mon - off or yoga
Tues - speed work Run, second w/o of the day speed work bike.
Wed - Swim and easy ride
Thurs - hill run and bike
Fri - off or easy ride
Sat - long run and swim
Sun - long ride
The idea behind this structure is that by clustering the harder workouts together it allows you to have true off days to recover. So Tues through Thursday were meant to have some intensity. Mon and Fri were recovery days and the long stuff came on the weekend. Assuming that your run is the more challenging event, I would always cheat to do that first on the combo days (your legs will tolerate being tired on the ride better) and put your long run the day before the long ride, for the same reasons.
I hope that helps.
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2007 Look Dura Ace
2010 Custom Tonic cross with discs, SRAM
2012 Moots YBB 2 x 10 Shimano XTR
2014 Soma B-Side SS