Participants interested in running both the 10K and the 5K should register as a “Double Challenge” participant. You will receive a special Green colored bib at packet pick up that denotes that you are participating in both events — a great opportunity for anyone training for upcoming distance events!

On race day, line up as you would for the 5K start at 8:00 AM, and when you finish, make your way back up the hill to get back into the corral for the 10K start at 9:00 AM. Do not collect your Double Challenge Medal after the 5K. From the finish line in Rosslyn, the distance is about 1.5 miles back to the start line– runners will need to estimate how much time they need to get back up the hill to be ready in time for the 10k start which is exactly 1 hour after the start of the 5k. You likely need to be able to finish the 5k in no more than 30 or 35 minutes if you intend to compete in the 10k as well. Late starters won’t be allowed in the 5K and please also note that the Start Line for the 10k will close exactly 5 minutes after the gun — so please be on time for both.

When you finish the 10K, you will be able to collect your Double Challenge Medal. Please have your bib handy to show to our friendly staff members and they will pull your Double Challenge Medal tab! (Challenge Medals are limited to the first 600 registrants).

Double Challenge participants will receive a 5K, 10K, and double time (combined times for both events) and the Double Challenge Medal.

If you choose to only run one race and are signed up for the double no biggie . . . you will still receive a time for the event you participated in and do not need to swap a bib.