"5K on the Runway" is scheduled for Saturday, Sept. 10, when runners will gather at 6 a.m. for a sunrise 5K on a runway at the Denver airport.
All participants must be off the runway by 7 a.m. so DIA can resume full operations at 8 a.m.
Registration for the race began Thursday at 7 a.m. Organizers said Thursday evening that registration was capped at 2,500 runners, and they reached that limit Thursday afternoon.
Racers will get a runway-themed shirt, an antique silver airplane medal and free runner photos.
United Airlines, the presenting sponsor, will be hosting a post-race breakfast and other festivities at their hangar.
The airport is working with the Federal Aviation Administration (FAA) and its airline partners to ensure the race will not disrupt service.
DIA uses six runways for air traffic. This will allow the airport to host the race without disrupting normal early morning operations.
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