On Saturday 24th October 2015 I have been to Bokor Mountain to join a 10K run. First time I thought we are going run from the bottom of the mountain to the top of the mountain. Fortunately, we were running on the top the mountain but still there are hills there, some are small and some bigger than the bridges in Phnom Penh and even higher. I was training with my friends out of the campus but the site I ran is flat. It was really challenge for me to run in Bokor. I was really tired for 1st two kilometers so I slow down a little bit with my own pace. Another challenge was there were less people run there. After 5 K the distance between each runner was about 500 meters. To run alone is not easy at all, If there are more runners around me I can encourage myself easily. I have some mistake that I have done were when I ran up the hill I use a lot of energy and It make me really tired but I didn’t use really much advantage on the way down. I didn’t sleep a lot before the race. I ate a lot of food at the night because I thought it will give me more energy but at the morning I got to go to the bathroom. Anyway I got to the finish line and I got 4th place of Liger runners. That was not bad. I got a lot of experience from this run.