CORE is the slickest nutrition planning software out there! We use CORE to create your race nutrition plans, along with our knowledge and expertise in nutrition, and work closely with you to tailor your race nutrition plan to your specific needs.
You can use CORE yourself (ask me for a 25% discount code) but many athletes have questions about the data the program creates. They also don't like to spend the time tweaking and changing the plan after they've tried it and are often unaware of all the nutritional products that are out there and what they contain. For these reasons, we recommend you work with an expert to develop a plan that is right for you.
I'll be adding more information to this blog on CORE but for now, here's an excellent article on CORE written by one of CORE's developers, Dr. Asker Jeukendrup.