http://online-logistique.net/official-pace/
Official Pace

What official race do you think I will be fine?
My only training routine is running, mountain running, usually training fartlek and not much if you continue. I run down the stairs and the forest, usually surfaces 1/2/3 hours, sometimes more, but not weekdays. I can use average rate of more, but there are times when I feel like running. May please kindly give me your opinion? Thank you very much!
definitely long distance. fits his style more than a sprinter