A few weeks ago I ran my 15th half marathon, on a whim. On the Friday of Winterman, my Mom, who was going to be in town that weekend, texted me to see if I wanted to do the race. I would do the half-marathon and she would do the full (her 50th marathon, I should add). It was admittedly the first time I entered a race last minute. I had unfinished business at this race after being pulled off in 2014 due to a frost bite scare. The forecast was looking great and in the back of my head, I knew I would get a mental boost from running a race. Normally I build a half-marathon into my marathon trying cycles, but given that Shamrock Marathon is in March, there are limited half-marathons in the lead up. Whereas with later spring marathons, take your pick of X, Y, Z, March-April races to use as trainers.