I don't think protein is necessary for that distance. I think you may want to try getting away from most solids and concentrate on getting in 250-350 calories per hour in the form of sports drink and gels.

Depending on how much you sweat, 2 bottles of sports drink could be a little light for hydration. Are you also taking in plenty of water with those calories?

Yes, Lack of energy big time. I am almost dragging. Then again I am 6'1 , 210lbs and I always feel better when I am consuming. I agree that I definitely need more water. My handicap is that drinking all these energy drinks after while just tastes yucky. Even Hammer Heed at first is ok but then you just want water only. I realize I am going to need more food to finish off the run leg but all just energy drinks and gels?

+2 since KitKat mentioned this in another post I do the same lately. I have actually experimented with mixing 3 hrs worth per bottle. I can get a whole 6 hrs in 2 and then use my aerobottle in front for water for racing (just pick up water at the stops since in an IM they are every 10 miles). For a long training ride I just carry an extra bottle in my back pocket and if needed refill at a park or buy a bottle of water at the gas station.

I agree that solids are not necessary for the HIM distance. Although I have been experimenting with eating a Power Bar at mile 28 on the bike. Other than that I use Hammer gels and Accelerade. For me the correct amount seems to be 2 bottles of Accelerade and 2 bottles of water and at least 2 gels but never more than 3.

In my experience too many solids during a race like that will make you feel sluggish because you will be full and if you are unlucky you will have to take a pitstop to get rid of some of the solids. Plus you waste a lot of energy chewing.

You may want to consider trying either the Gu Chompers w/caffiene (I love these) for energy, or the Cliff Shots (similar to Chompers) for calories if you don't like Gels - they're the consistency of gummy bears.

I used to not drink anything on long-rides and some people mentioned carbo-pro and ELoad to me, which I tried for both my 100 km ride on Saturday and Olympic distance race on Sunday - felt great both times (slight bloating and IBS on Sunday in heat but don't think it was the products)...

For the Ironman 70.3 in August (Calgary) I am thinking of doing Eload/Carbo-Pro ("ELCP") bottle 1, water bottle 2, ELCP bottle 3, and water bottle 4. At the same time I will eat 2 servings of Gu Chompers - total caloric intake will be about 1,100 on the bike / 3 hours it will take me = 350 per hour, consistent with what PJT posted above and hopefully it will work.

Good Luck in finding the right mix for yourself!

Infinit is one drink that allows you to use straight maltodextrin, if you want.
http://www.infinitnutrition.us/
Their website has a quick start interview for an initial picture of what they would recommend based on your race distance, sweat rate, body weight, and whether or not you plan to eat solids or want extra sodium and any caffeine in your drink mix.

Last year, I did up a formula for IM distance that I now use for IM and HIM races. The initial formula they recommended contained a fair amount of whey protein powder. I found that made me feel pretty bloated while riding, so I eliminated protein and have now biked an IM and HIM on the stuff with zero GI issues. (I don't use it on the run becuse I hate to carry fluids while running. Instead I just rely on some Gu and whatever beverages are on the course).

For a HIM, I use a 24 oz. bike bottle concentrated to roughly 3x normal, so 900-1000 calories. I take a mouthful every 15 minutes and chase with two mouthfuls of water from the aerobottle (you need the extra water to digest the concentrate). The only refilling I then need to do is add water to the aerobottle. I do carry a gel or two also, but this is mostly to mix up the flavor and add a bit of caffeine (my concentrate is decaf). For an IM, I have a second bottle of concentrate in special needs and grab it halfway through the bike.

Coming on late here, I am trying to get a handle on the eating lark. I am back training only recently. I had a good body at one point but actually because I wasn't taking in enough for what I was doing. I seem to have swung the other way.
When I bike maybe for an hour and half, in heat, I got through about 3/4 litre of energy drink, and two energy bars.
When I run for half an hour, I drink about half a liter of energy drink after wards to replenish fluid loss, stop cramping, and hopefully help me cool down. When I swim 500 meters, I have usually eaten some ceral bars about an hour before hand and have a small meal, chicken salad maybe pasta straight afterwards.
I don't get to eat 'big' till 9pm , I don't get to bed till midnight. I am not over weight, but I am not ripped either. I do core and I am starting weights. I am trying to be patient, but what I understand from this is I sort of have my diet in reverse, and maybe too much for the bike?