My mates are looking to run a half marathon next year, the longest I have ever done for a timed event or in a one shot is 5k (22mins). Wasn't really going hard I didn't think, doing the same one again in a few weeks.
Going to sign up for a 10k later in the year, what's the best way to up distance and speed? I am pretty confident I could do the distance as is, but well you know...need to beat your mates....