What's the average timing for a runner to complete a half marathon?

I'm going for a 21km half marathon in may.May i know what is the average timing a runner will take to complete a 21km half marathon?Is it slow for one to complete in 2hours 23 minutes as it was my previous timing.|||The point of running is improving and the average is just an average and depends on age, race and training. I would just think you should easily beat your time with more experience. Do more races and improve your mile pace. Good luck!