⏵ Course guide · Kennesaw Halloween ultra
Pumpkin Butt 50K runs five loops of about 10K each on the mountain trails near Kennesaw, Georgia, a free, members-only Halloween tradition from GUTS complete with a pumpkin-carrying summit ritual. I will walk you through the loop format first, then give you a pacing and fueling plan for a lightly supported course, plus free calculators to dial in your own numbers.
These facts come from the official GUTS race page. Check the current year details, membership requirements, and cutoff before you commit. Race logistics change year to year.
The 50K breaks down into five loops of roughly 10K each through the mountain trails around Kennesaw, the same course GUTS has run in recent years.
Each of the five loops includes a climb toward the summit area, the same stretch where the race’s pumpkin-carrying tradition plays out, so this is not a flat repeat course. Full turn-by-turn course and parking details are shared with registered GUTS members closer to race day rather than published in advance.
Every runner is asked to bring a pumpkin, no gourds. Once you have completed at least two loops, you can volunteer to carry one of the collected pumpkins up to the top of the mountain, drawn at random, and bringing your own pumpkin back unharmed earns a special prize. The race also collects canned goods for the local food bank, and there might be pie for the winners.
Aid is available only at the start/finish area, once per lap, so plan your carrying capacity for roughly 10K stretches between resupply rather than expecting frequent on-course support.
The 3:00 PM "start your last loop by" rule, 7 hours after the 8:00 AM start, gives you a clear target: complete four loops with enough margin to start a fifth.
With five loops and a hard start-time cutoff on the last one, your first four loops need to average under roughly 1 hour 45 minutes each to leave room for a final lap. A grade-adjusted pace target for each loop’s summit climb helps you judge that honestly rather than assuming flat-ground pace carries through the climbing.
A race-time estimate built from your training, checked against your actual first-loop split, tells you honestly whether five loops and the summit climb each time are within reach before you commit to that final lap.
⏵ Free tools to pace this course
With only one aid station, once per loop, and a late October Georgia day that typically runs from the 50s in the morning up toward the low 70s, plan to carry more of your own supply than you would on a race with denser aid.
Aim for roughly 45 to 75 grams of carbohydrate per hour, and pack enough on you for each roughly 10K loop rather than relying on the single start/finish aid station to cover you mid-loop. Restock fully every time you come through.
Sodium in the 300 to 700 mg per liter range covers most runners on a late October day here, with room to lean lower early in the cool morning and higher as the afternoon warms through your later loops.
⏵ Build your fueling plan
Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and a lightly supported loop course with the free ultra fueling calculator. Browse the rest of the free running tools at the tools hub.
⏵ Train for it with Summit Line
Get a race-day plan built around YOUR fitness, this course's five-loop summit climbs, and the 3:00 PM last-loop cutoff. Summit Line reads your real training, builds a plan for repeated climbing, and rehearses your fueling so race day is something you execute, not guess at.
Five loops of about 10K each around the mountain trails near Kennesaw, Georgia, each one including a climb to the top, which is also where the race’s pumpkin-carrying tradition happens. With only one aid station, at the start and finish, available once per loop, you need to plan your own fueling and hydration for each roughly 10K stretch rather than relying on frequent course support.
Every runner is asked to bring a pumpkin, and once you have completed at least two loops, you can take a turn giving one of the collected pumpkins a ride to the top of the mountain. Any runner who brings their own pumpkin back unharmed earns a special prize, and the race also collects canned goods on site to donate to the local food bank.
You must start your final loop by 3:00 PM, which gives you 7 hours from the 8:00 AM start to complete four of your five loops. Since the format works on a start-your-last-loop rule rather than an overall finish cutoff, pace your first four loops with that 3:00 PM deadline in mind.
With one aid station passed once per loop, roughly every 10K, plan a self-sufficient carrying strategy between stops. Aim for roughly 45 to 75 grams of carbohydrate per hour, and keep sodium in the 300 to 700 mg per liter range for a late October Georgia day, when temperatures typically run from a cool morning in the 50s up toward the low 70s by afternoon. Build your numbers with the free ultra fueling calculator before race day.
No. The run is free but open exclusively to GUTS (Georgia Ultrarunning and Trailrunning Society) members, and the race is intentionally classified as a "run" rather than an official race because of permit limitations at the venue. If you want in, joining GUTS is the way to register.
The course runs five loops of about 10K each through the mountain trails near Kennesaw, Georgia, with each loop including a climb to the summit area where the pumpkin-carrying tradition takes place. Full course and parking details are shared with registered participants closer to race day rather than published in advance, so confirm the current route with GUTS if you are new to the event.
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<a href="https://runsummitline.com/guides/pumpkin-butt-50k">The Pumpkin Butt 50K course guide</a><iframe src="https://runsummitline.com/embed/race/pumpkin-butt-50k" style="width:100%;max-width:420px;height:180px;border:0;" loading="lazy" title="Pumpkin Butt 50K course guide by Summit Line"></iframe>This guide is independent and for planning only. The course details, dates, and cutoff come from the official GUTS race page and can change year to year, so confirm the current specifics with the organizer before you register or run. The fueling and pacing advice is general and not medical advice.
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