Revised versions of Chasing the Runner’s High and R is for Running are now out! Both books have improved formatting (I’ve learned a few things since they first came out), I’ve added a new high-res cover to the ebook editions, and I’ve fixed a few things that were missed during the original editing process.
No need to rush out and replace your existing copy (unless you want to :-), but if you purchased a Kindle edition from Amazon, you should be able to upgrade to the new version by requesting it from customer service.