Secret City Half Marathon
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Secret City Half Marathon and 5K
The Secret City Half Marathon and 5K is held in Oak Ridge, Tennessee, with in-person events on November 14, 2026 and virtual options available November 14 to 28, 2026. The event center is at Melton Lake Park peninsula, 697 Melton Lake Drive, Oak Ridge, TN 37830.
Distances included:
- Secret City Half Marathon
- Secret City 5K
- Virtual Secret City Half Marathon
- Virtual Secret City 5K
The half marathon course begins at the Melton Lake Park peninsula, follows Melton Lake, passes an operational quarry, continues along a tree-lined private road, and winds through Oak Ridge before returning to the peninsula at the water's edge. The half marathon course is USATF certified with certification number TN15066MS.
The 5K also starts and finishes at the Melton Lake Park peninsula, follows the lake edge to Elza Gate Park, and doubles back along the walking trail to the peninsula. The 5K course certification number is TN15077MS.
Packet pickup is available on Thursday, November 12 at the Oak Ridge Chamber of Commerce and on race morning on site. Virtual participants have from November 14 to 28 to complete their runs and will receive race swag by mail after November 28. The event benefits Keystone. Refunds are not offered; registration may be deferred up until race morning. Visit the organization's website for the most recent information.
