The most common question I get from people back home is: What's China like? My website: http://www.owendennis.com China blog: http://www.owendennis.com/blo...
Assuming you can run 2 miles now at a nice easy pace (conversational), within 20 weeks you should be able to train up to being able to finish marathon distance at that nice easy pace (between 10 and 12 minute miles) or approximately 4 to 5 hours.
To the average person, running 13 miles sounds crazy. It takes about two hours on average to finish if you are in good shape and you could spend months preparing for your first race. Here's the good news: half marathons are not that hard. In fact, they are considerably easier than a full marathon at 26.2 miles.