People have asked me about how much of certain products they should use in races. That is a unique amount per individual but some general guidelines are available. I developed a spreadsheet that not only gives guidelines by weight but also allows you to determine the proper mix to get your hourly caloric needs.
Remember that this is something that each individual needs to work out for themselves during training. It is better to err on the low side of hourly needs.
Unfortunately I couldn't get the spread sheet to load directly to this page. Here is the spreadsheet
Once there click on the Excel icon on the left to download it as a worksheet.