I do the cooking at home. Where we eat no more than 100 grams of meat a day and have 'tons' of fresh vegetables. I prepare the vegetables with a wide range of herbs, spices and such. We also keep on hand lots of fruit, yogurt and great breads.
People ask me what the most important thing to take on the race is, and I always say it's a sense of humor. If you've got nothing but a sense of humor, you will survive.