PLUS: Hal Higdon's Marathon--Advanced 1: This training program for Advanced 1 marathoners offers a progressive buildup--similar to that for the novice and intermediate runners, except you start at 10 miles and peak with three 20-milers. There is also more training at marathon pace (usually Saturdays, the day before Sunday long runs). The major difference, however, is the addition of speedwork. Advanced 1 has one day of speedwork; Advanced 2, two. Pick your poison. Each day I will send you an email telling you what to run and offering a training tip. For more information and directions, visit my website: halhigdon.com.