I bought this book after running the Henley half marathon in 1 hour, 43 min., looking for ways to improve for next time. I had used the 12 week training schedule included in the July, August and September 2001 issues of Runner's World magazine (UK version) to prepare for this half marathon. The techniques recommended in Hal's book were already covered by that 12 week plan, so I felt I didn't learn anything new by reading this book. This book would still be great for a beginning runner, with very precise programs for 5k and 10k, less so for someone who wants training schedules to improve speed for their 1/2 to full marathons. Hal expects the reader to take his techniques, then draw out his/her own program. If you want someone to tell you exactly what to do to prepare for a 1/2 to full marathon (instead of designing your own), then perhaps Hal's book on marathons would be a more appropriate purchase. I won't keep this book on my shelf (I saved copies of the RW schedule), but I will give it to my sister, who's spent a long time away from running and could probably use some of these tips to retrain.