I've got a goal of running a 1/2 on April 28 and I've put together a few races leading up to that goal.
I'm hoping HC will chime in and let me know if its a reasonable race schedule.
I'm running a 10k this Sunday (2/5)
4/1 10 miler
4/28 1/2 marathon
For the last 1 1/2 months, I've been doing a long run on the weekends and slowly increasing the distance and furthest I've gone so far 11.5 miles.