My first race was a 10k, and I was 34 years old! I did all my training on a treadmill, so I was unsure how I'd perform on the route. I did one 6-mile run on a trail prior to the race, and I found that the treadmill prepared me very well for the road -- pace was very similar. Immediately after the race, I was exhausted, but the rest of the day, I was simply filled with an awesome sense of accomplishment. Of course, I've gone on to many, many more races -- further distances and faster paces. Today, I truly enjoy running and would never step foot on a treadmill. The elements, the fresh air, and the feeling of propelling your body across the landscape make outdoor running a significantly more fulfilling experience than treadmills and other machines. Have fun!