Secret City Half Marathon
Secret City 5K
Virtual Secret City Half Marathon
Virtual Secret City 5k
Welcome to one of Tennessee's most unique race experiences! The Secret City Half Marathon & 5K combines scenic waterfront views, a USATF certified course, rich American history, and an unforgettable race-day atmosphere in the heart of Oak Ridge, Tennessee.
Known as the "Secret City" because of its pivotal role in the Manhattan Project, Oak Ridge offers runners a destination unlike anywhere else. Today, this East Tennessee city is home to world-renowned science and technology, beautiful parks, miles of greenways, welcoming local businesses, and a vibrant running community. Whether you're chasing a new personal record, completing your first half marathon, or enjoying a fun 5K with family and friends, you'll experience why runners return year after year for this fan-favorite fall road race.
Thursday, November 12th
- 4:00-7:00 pm
- Located at: Oak Ridge Chamber of Commerce, 1400 Oak Ridge Turnpike
Race Day Saturday, November 14th
- 7:30-8:45 am
- Located at Race Site
For Virtual Runners:
- Complete your virtual run November 14-28
- Race swag will be mailed AFTER AFTER November 28th
We do not offer refunds, but you are able to defer your registration up until race morning.
Secret City Half Marathon and 5K Date: November 14, 2026
The half marathon route starts at the scenic Melton Lake Park peninsula. Considered a great PR course! Course runs along the beautiful Melton Lake then down by an operational quarry for a change of scenery. Continue along a serene tree-lined private road then wind through Oak Ridge. Finish your race along the water's edge right back to the peninsula. Course is USATF certified with certification # TN15066MS.
The 5K race route starts and finishes at the Melton Lake Park peninsula. The course follows the water's edge along Melton Lake to Elza Gate Park then double back down the walking trail to the peninsula. A very scenic, easy, and enjoyable 5K run. Cert #: TN15077MS
If you have any questions about this race, click the button below.
The Secret City Half Marathon & 5K isn't just about crossing the finish line.
It's about supporting our Oak Ridge community.
Donations to Keystone Adult Day Program help provide opportunities, care, and connection for adults while supporting the families who love them.
Thank you for helping us make every mile count. Little by little your support helps.
$1,222
Raised of $3,000
