I’ve been fat-adapted and in ketosis in my running for the past 3 years - with race distances ranging from 5K races to 100 milers. I’ve used gels made of Generation UCan, Coconut Oil and Water for fueling.
Recently I’ve been trying to qualify for Boston, which is quite a bit quicker than I normally run, and am going to experiment with exogenous ketones. My “natural” pace is about an 8:30, and my MAF time (pace below my anaerobic threshold) is 10:00. I ran a 3:31 marathon (an 8:03 pace), but really ran out of gas toward the end. I need to run a 3:22 to get into Boston.
Has anyone experimented with exogenous ketones on longer pace runs or faster races? Anything to share?
2/16/18 edit: there’s another topic with stories on this here: First Ketone Ester for sport Below my experiments (and another’s) are documented, and @ianrobo has some great info on his training as well!