You should read this post and this post for more info, sorry I'm not much help. You can ask on twitter through the #epicreadathon hashtag or maybe leave a comment on Brielle's blog (the posts I linked to).
Good luck to fellow readathon-ers :)
For this 24 hour readathon, I'm planning on reading: (the crossed out books are the one I've finished so far)
First Grave on the Right by Darynda Jones
Ship Breaker by Paolo Bacigalupi
Enclave by Ann Aguirre
Red Glove by Holly Black