Yeah, I'd agree that the trudge that far isn't fun in the winter sometimes (I have a similarly distant pile). I don't think I have near as much going out as it sounds like you do, but my daily (maybe every 2 or 3 day) goal is to get it out of the kitchen. I plop what I have just outside my back screen door in 5 gal buckets that hold it until I can walk them back to the pile.
To handle the volume it sounds like you're talkin', or to make my trips less frequent, I wish I was a bit of a welder: Take a 55 gal drum and turn it into something that resembles a tow roller, but filled with compost pile-bound waste!

Unloading probably wouldn't be fun though.
I do have one of those compost spreader rollers, but I don't think it would be big enough, and would probably leave a trail of goo as I rolled it over to my pile

But I guess if the dogs didn't attack the trail, it would benefit the ground anyway! Again, unloading wouldn't be fun.
I guess if I could design it so the drum lid came off easily enough, that would solve my unloading problem...
At any rate, at least you're still collecting and not killing yourself with the walk!