The answer to what is a good half marathon time is entirely subjective as there are a host of variables involved to any race such as conditions, terrain, your age, gender, etc.
For many runners there are the obvious and clear time barriers such as 2hr, 1hr 45, 1h 30 marks which can often be just as much of a psychological barrier as a physical one.
There are some stats from xyz that suggest that the average half marathon time for a …