I'm on the verge of committing to walking & racewalking (as intervals) a
half-marathon 7 weeks from now.   Kind of a last minute decision as far as
training goes, but I think it may be doable.  I generally keep to a low-carb
version of paleo eating--sometimes in ketosis, but usually not.  Would
appreciate any helpful info to keep from "hitting the wall."   *Real*
racewalking technique demands a lot of energy and can deplete glycogen
pretty fast.  I know from last year's training I literally can't stomach
hi-carb sports drinks (even when deeply diluted),  GU, or powerbars.  The
Wheat Thins that a lot of marathoners rely on are obviously out, too.  I
want to stay as close to paleo as possible.  Any ideas?   Speed won't be too
important to the event (if maybe a widdle important to me <g>) since I'm
only doing a half- and the full-marathon cut-off is 6 hrs.  I (barely)
remember an article published last year (in Runner's World, maybe) that
cited research showing that some ratio of pro+carb was more effective
replacement than carbs alone.  Anybody know about this?  Cordain probably
has some research, but I need to spend more time walking than reading &
researching, so any practical advice that I can test/apply right away would
be very much appreciated.

Theola