Synchronous Firefly Lottery and Viewing Dates for 2025

Each year in late May or early June, Photinus carolinus, a firefly species, flashes synchronously. (Courtesy: GSMNP)

Synchronous Firefly Lottery and Viewing Dates for 2025

GATLINBURG, Tenn.— Great Smoky Mountains National Park will host its annual synchronous firefly viewing opportunity at Elkmont from May 29-June 5. The public can apply for this opportunity by entering a lottery for a vehicle reservation through https://www.recreation.gov/ticket/facility/233374? . The lottery for reservation applications opens on Friday, May 2 at 10 a.m. EDT and closes on Monday, May 5 at 11:59 p.m. EDT. This lottery system ensures that all applicants have an equal chance of securing a reservation.  

Every year, in late May or early June, hundreds of visitors gather near Elkmont to witness the mesmerizing phenomenon of Photinus carolinus, a firefly species known for its synchronous flashing behavior. Since 2006, the National Park Service has limited access to the Elkmont area during an eight-day period of predicted peak firefly activity. This approach helps to alleviate traffic congestion, ensures a safe viewing experience for visitors and minimizes disturbances to these remarkable fireflies and their ecosystem during their mating period. 

A total of 960 vehicle reservations, 120 per night, will be issued through the lottery process. Each reservation allows one vehicle with a maximum of seven occupants to park at the Elkmont viewing location. The number of daily reservations is based on parking capacity and the ability to safely accommodate a large number of viewers on site while minimizing resource impacts. 

Lottery applicants may choose two potential dates to participate in the viewing opportunity during the eight-day period. Applicants will be selected using a randomized computer drawing. All lottery applicants will be charged a $1 application fee. Successful applicants will automatically be given reservations, and a $29 reservation fee will be charged to the same credit or debit card used for the application fee. The $29 fee covers the cost of awarding the reservation, on-site portable restrooms, supplies and nightly personnel costs for managing the viewing opportunity. 

Reservations are non-refundable, non-transferable, and good only for the date issued. There is a limit of one lottery application per household per season. All lottery applicants will be notified by e-mail by May 13 if their application was successful or not. 

During the viewing period, access to Elkmont is restricted after 12 p.m. to passenger vehicles with a reservation and registered campers staying at the Elkmont Campground. Overnight parking at Little River Trailhead, Jakes Creek Trailhead or the Appalachian Clubhouse is not allowed during this eight-day period. 

Each year in late May or early June, Photinus carolinus, a firefly species, flashes synchronously. (Courtesy: GSMNP)

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