Dolphin Challenge
TowneBank Shamrock 8K &
Sentara Shamrock Half Marathon
Make the most of your weekend by taking on two races! Dolphin Challenge participants will run the TowneBank Shamrock 8K on Saturday followed by the Sentara Shamrock Half Marathon on Sunday. Dolphin Challenge finishers will receive a special challenge medal on Sunday to recognize their Dolphin Challenge achievement.
2026 Dolphin Challenge Medal
In order to be in the Challenge, you must register for the Challenge category at the time of registration. If you register for the 8K and the half marathon or the 8K and the marathon separately, you will NOT be included in the Challenge.









