Gents, I'm thinking about running a half-marathon in about 5 months time. I've never run one before but I've always thought about giving it a go. To that end would anyone here be able to give any advice or help in training for this, and have I given myself enough time to be ready for it? My usual running routine is two to three times a week covering a distance of 3.5-4 miles. Any help or advice greatly received.