Fort Yargo Thrill In The Hills

The Thriller Lake Endurance Run is a 12, 6, and 3 hour timed loop event on the 2.2 mile loop around Miller Lake at Little Mulberry Park in Gwinnett County, GA. It's a Halloween party combined with a race, featuring runners in costume, food, and music.

For 2025, Classic Running and Mount To Coast are providing overall winners with their choice of shoes!

The Trick or Treat Fun Run is for kids and adults of all ages looking for a trick or treat experience in a fun, safe, and positive community setting. Participants will complete one loop of the Miller Lake paved 2.2 mile trail with plenty of opportunities to experience the magic of Halloween. Costumes are highly encouraged, practically required! I mean, we'll be wearing ours… We will have several trick or treat stations along the course stationed with costumed volunteers and most importantly, candy! And don’t worry, you don’t have to run, but as night falls, things may only get stranger…. Just kidding… Or am I?

Seriously though, the Fun Run will start at 630PM, just as the sun starts to set, aka dusk. Most walkers can complete this loop easily under an hour and should be done before full dark (7:30PM). We still encourage guests to bring a flashlight, headlamp, old-timey oil lantern, or a lit torch if you’re concerned about the dark. Ok, maybe not a real torch, but you get the point. Strollers are allowed but we will have to discourage any type of bicycles, scooters, or motorized devices unless medically necessary as there will be other runners on the course as well as the general public. Please remember to always be aware of others using the trail and keep to the right when others need to pass.

The fun run will not be timed. Instead, every participant will get a glow-in-the-dark wrist band when you check in, so that our volunteers will know who is participating in the event. We’ll also have a special treat bag available for the kids, or they can bring their own!

Did we mention costumes? Oh yeah, it wouldn’t be a Halloween event without a costume contest! The top two best costumes (as judged by TEAM SUMMIT(and we know our stuff when it comes to costumes)) will get acknowledged AND the overall BEST costume will receive tickets to a Falcons game, courtesy of our friends with the Falcons organization.

Spectators and family are allowed in the start/finish area but everyone on the course must be registered for the event.

PERC Coffee will be brewed on site for all participants, spectators, and crew!

COMPLETE RACE DAY INFORMATION Please review the handbook in its entirety: 2025 Handbook ALL RACES START AT 8AM Races begin and end at the same place and begin at the same time. REGISTRATIONS CAPPED Thanks to your support, we have sold out the event for the last three years. We hope to have a full house again in 2026, but also want to keep the race small enough to have the family / homegrown / grassroots feel we love. For this reason, we will cap the event. If you know you want to join in, please sign up early to make sure you get a spot. Thanks! The Flatrock 50k | 13.1 | 50/50 Challenge is back! Remember when running was just… running?! Same. We’re big fans of grassroots ultras, so we’re going back to our roots & bringing you guys one heck of a fun, down-to-earth, no-frills, chill, good old-fashioned trail race! We’re keeping the prices as low as we can, but the stoke as high as possible! So come on out to Georgia, kick back for a day of Southern hospitality and epic racing on sweet

Southeastern single track! (Say that 3x fast.) Beginner & PR Friendly Are you itching to try your hand -err- legs at trail or ultrarunning? Or maybe you're on the hunt for a trail PR? THE 50K & HALF MIGHT JUST BE THE RACE FOR YOU. If you're looking for epic vistas or mega climbs and descents on mountains, that's not this! Flatrock 50k & half is as good as it can get for your first ultra or trail race. Though it is definitely still a TRAIL race, and you will absolutely need to be able to read a map, follow markings, and pay attention, the trails here hit the sweet spot of flowing with hills that are just challenging enough to keep it interesting, while still allowing runners to throw down some fast times! This is a true trail race! The route will take runners through undulating trails winding through miles upon miles of trees. The trails are not technical. As for the hills, they’re nothing that will take you longer than a minute or two to climb!The 50k race will consist of 2 13.2 loops, and

1 5.2 mile loop. The half will consist of one loop. Both races will take runners to aid stations that are very accessible by their family and friends.Cutoffs for each distance:50k - 9 hours 13.2 - 5 hours 50/50 - 9 hours STRICT cutoff. REMINDER: The 50 Mile challenge is incredibly difficult, and no one has been able to complete it yet, even very fast and capable runner! You will have the option to drop down to the 50k before going for the challenge... choose wisely! (Complete details below & on site.) The 50/50 Challenge Now for the REAL fun… Attention all you speedsters out there: If you're feeling lucky or you're hungry for a challenge, you can choose to sign up for the 50/50 challenge. This is NOT for the faint of heart, and NOT for the folks taking their time. The 50/50 challenge is incredibly tough, and so far we have only had one runner even come close to finishing it! If you choose this option, when you complete your 50k, you will have the option of either keeping the 50k finish OR

continuing for another 20 miles to snag a 50 MILE FINISH. The challenge? YOU MUST COMPLETE THE 50 MILES WITHIN THE 50K's 9 HOUR STRICT CUTOFF! And once you commit, you’re locked in! If you don't? You get ZERO credit for either distance. If you do? You get a super exclusive 50/50 challenge shirt & a free entry to come back and run again next year! Think you got what it takes? It's not easy, that's for sure. No one has officially completed it yet, though one has come close. Many say it's impossible. We'll see! Spectator Friendly We're all about including family and friends for the fun. So if you've got kids, bring ‘em on out! Harbins Park boasts an awesome playground that'll keep the kids entertained while you channel your inner trail beast. You'll pass by the start/finish line more than once. The aid stations are easily accessible by your crew giving your personal cheer squad ample opps to shower you with love and encouragement. Swag, Awards, etc All entrants receive Flatrock race item to

commemorate their race! 50/50 challenge runners receive a shirt upon completion of the challenge. Complimentary race photos will be available to download and share. The Flatrock hoodie is available for purchase on website. If there are additional hoodies we have will be available for purchase via cash or venmo on race day. Awards: Top 3 M/F in each race will receive special recognition and free entry to the event the following year. Refunds / Transfers / Deferrals If life throws you a curveball, fear not! We've got a flexible refund policy. Full entry return via race credit is available until 7/1, and even after that, you can still snag a half-entry race credit until 9/1. We've got your back, even if you end up having to pass the torch (or, in this case, the race entry) to another eager participant… WE WILL ALLOW BIB TRANSFERS! Event's current local time: 4:49 AM ET

Hit the trails with Team Summit for a fast and challenging race through Little Mulberry Park this December.

-The 10 Mile race will feature roughly 1,400ft of vertical gain. A halfway aid station with bathrooms will be placed at the 5 mile mark.

-The 5K race will feature roughly 500ft of vertical gain, crossing over one of the highest points in Gwinnett County.

The winners of each event will win entry to the Yonah Mountain Vertical Race in February.

Plan to hang around after the race for post-race pancakes and coffee!

Discount available for all local run clubs, inquire with your organizer.