Half-Marathon Training 3 days/week

The FIRST program also has 5-K, 10-K and half-marathon training programs based on the principles of cross-training alternating with running with intensity. I created a spreadsheet that takes your 5-K time as an input and creates an 18 week training program based on your Half-marathon time, and intermediate speed distances in between.
I did this for two speeds so far:
Descriptions of FIRST Program Science
Sample Half-Marathon programs for various times

Today is the end of Week 1 of this 18 week program for Half Marathon on May 2, 2010, so if you are still interested, you could catch up.
Good running,
Tom