Running the 10K
When the big day finally arrives, you want to be ready. Prepare the way you would for any event, being sure to bring the gear you need with you to the race, giving yourself plenty of time to register and warm up when you get there, using the facilities if necessary (there are sometimes long lines for these!), and finding your place among the runners. Many of the same strategies and tips relating to the 5K race also pertain to the 10K.
Think about how competitive you want to be. If the race is your first 10K, you probably won't have winning as your goal. Decide on a time that you think is currently achievable for you in the race, and line up with the runners in that bracket. Posted behind the starting line at many races are signs indicating a continuum of anticipated paces that serve as a guide for runners to position themselves appropriately. It is important to place yourself based on a pace you can realistically maintain throughout the event—that is, where you won't slow others down or need to weave around those who might slow you down.
Once the race begins, settle into a pace based on your training runs for this distance. It's easy to excitedly start out too fast, especially if you feel fit and ready to tackle this new length. Rein yourself in a bit, thinking about how good you'll feel in the last few miles to have energy to draw upon in order to achieve your goal.
With a quarter-mile to go, decide if you have energy reserves remaining to throw in a kick, picking up your pace all the way to the finish line.
How soon after my 10K can I run a 5K?
Depending on your mileage base, experience level, and how quickly you recover coming off the 10K, you could decide to compete in a 5K over the course of the weekends that follow. Running clubs sometimes hold seasonal race series in which they stage 5K races every week over the course of six to eight weeks. These are good motivation for enjoying the experience of racing in an atmosphere of camaraderie.
After the 10K
Your post-race routine should be fairly standardized by now: Spend a few minutes jogging easily or walking, drinking water, and then stretching. Have a bagel, banana, or other nutritious snack. When you get home, shower, change, and you're ready for whatever your day or evening may bring!
In regard to your next race, the general formula is that for every mile raced, you should allow the same number of days before your next race. For example, if you run a 10K, then allow at least six to seven days before your next race. You'll probably feel better racing a 5K next; entering another 10K may be overdoing it.
On the other hand, if you race a 5K the first weekend, doing a 10K the next could be a progressive step in your training. The success of either scenario depends on you as an individual and where you are in your training.