Sophomore year of high school, I join the track team. Coming from a football background, when my coach told me I had to run twice around the track, I practically thought I was running the marathon. The most I had ever run in football was maybe 50 yards at a time.
Coming from a school without a track (we practiced in the school cafeteria and, due to terribly cold weather, we never actually ran outside until the first race), I had no idea what my pace should be in any event. First race of the season (and my life) the competitive juices take over in my 800 race. A seasoned runner from my school takes out the pace pretty fast and I come through the 400 in 65. My coach, about ready to shit himself with excitement that I'm not in last, tells me to "HANG ON!" I remember thinking to myself, "I feel great. I knew football players are tough and I'm going to be really good at this." With 300 meters to go, I'll never forget a gust of wind blew and I was so spent at the time I felt like I was in a hurricane. I felt like walking off the track. I felt like everyone in the crowd must have been laughing at me because, at this point, I was clearly shuffling, crawling, anything but running. Runner after runner passes me and I cross the finish line in 2:29. An impressive 65/84.
Luckily, getting my ass kicked in that race made me realize what a great sport this is and I ended up going on to compete in college.