Typical training weekday looks like this, weekends differ slightly. While it may sound boring to eat the same foods every day, I actually credit regular & consistent eating habits with good recovery, sound sleep, & injury prevention…meaning regular & consistent training.
Breakfast:
bowl of oatmeal with banana, a few tinned peaches & skim milk
two slices of grainy toast - one with marmite, one with “lite” PB 
half a glass of OJ
SWIM
Post swim:
large strong black coffee
grain-based bar with carbs (mmmm sugar!) & some protein
(if i don’t swim a i have the coffee on arrival at work, less the muesli bar)
Mid-morning snack:
two-thirds of an apple and orange and one banana, chopped up & topped with a few spoons of natural yoghurt
(i save the other thirds and another banana for mid-arvo snack)
Lunch:
large leaf-based salad, usually with some chicken or tuna, lite dressing etc
or two vege based sandwiches on grainy bread, no butter
or small takeaway soup with a vege wrap
(I’m fortunate to have three great lunch sources within 2 minutes of my office)
Mid-arvo snack:
small bowl of brown rice with tuna
the other third of my fruit salad with yoghurt
maybe another coffee, usually a skinny latte with one sugar
RIDE or RUN (or both)
Post ride/run:
recovery drink, maybe a protein bar after particularly gruelling sessions
Dinner:
tinned beans on grainy toast
or small bowl of vege soup with toast
or tomato-based pasta dish (especially around those hard sessions)
protein shake before bed
So basically lots & lots of fruit & veges, raw wherever possible. Certainly not a food nazi, but i do try to avoid bad fats & overly processed products (white breads & pastas for e.g.). Apart from the yoghurt I don’t eat a lot of dairy. It shocks my family how little meat I consume too. I usually snack on a nutty trail mix during the day (good fats, a little protein), and consume 2-3 glasses of water. I think its important to remember as an in-shape endurance athlete its easy to overdo the water. I might treat myself to some peanut m&m’s occasionally, or a burger or kebab once every 6 weeks or so, but only when my body REALLY craves it (i consider this is a sign that shouldn’t be ignored). IMHO, any more and you’re wasting your time with 20+ hr training weeks, so easy to throw all that hard work away with poor food choices.
I’ve been a triathlete for 18 months. I prefer the HIM distance, but training for my first IM in 2008. This diet seems to work for me*.
*results may vary