Grandpa Joe's Halloween Candy Half Marathon, 10k, 5k & 1-Mile 

October 25, 2020 at Riverfront Park 

In partnership with the City of Miamisburg, Ohio

2018 Named Swaggiest Halloween Race this October by Runner's World!

2017 Featured on the Travel Channel as Top 9 Haunted Races! 

Featured on WDTN's Living Dayton in 2018 & 2019 as a Fun Race for Halloween Season! 

This Halloween run around town in your costume collecting candy, facing down scary monsters, and competing with friends and family in the most fun race of the year! Celebrate your accomplishment with food, drinks, music, decorations, swag and more. Racers get an event tee, finisher medal, Halloween candy, drinks and food.

Canceled due to COVID-19; See you in 2021.

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HighlightsHalloween Athletes Running in Costume

  • Halloween Themed Race for Everyone in the Family including the Beast 3-Race Challenge!
  • Halloween Themed Aid Stations with Decorations, Halloween Candy, Music and of Course Water!
  • Post Race Party with Halloween Music, Grandpa Joe's Candy & Treats, Costume Contest and More! 
  • Catered Breakfast at Bennett's Publical Family Sports Grill in downtown Miamisburg!
  • Enjoy Craft Beer or Themed Mixed Drinks + Water, Juice and More after the Race! 
  • Halloween Themed Finisher Medal For First 200 (classic medals to those after 200) to Register for Any Race (Halloween Beast Medal to First 50 to Register for Beast Challenge)*
  • Photo Booth & Professional In-Race Photos!
  • Stylish Lifestyle tees in Men’s & Women’s Cut with Option for Long Sleeve!
  • Pricing for all Budgets & Portion of Race Proceeds Support Local Charities!

Awesome Race Swag

Finisher Medals are given to the first 200 to register for any Race (classic medals to anyone over 200)! Plus Beast Finisher Medals are given to the first 50 to register for that race. Then everyone will get a custom Halloween Candy bib with your timing chip! Everyone who registers for the low cost Fun Run, will not get any swag.  

2019 Medal; New Designs Coming!

2019 Medal; New Designs Coming!

2019 Tee; New Designs Coming!

Race Shirts     

  1. Men’s Cut, Women’s Cut & Kids Sizing
  2. Shirts will be sleeve lifestyle tees; you have an option to upgrade to a long sleeve tee.
  3. To be guaranteed a race tee, you must register at least 2 weeks before the race date.  We often order extra tees. We will update tees left online so if your size is listed, you will get a tee.

Timed Races Offered

Half Marathon (13.1 Miles), 10k (6.2 miles), 5k (3.1 miles), 1-Mile & Beast 3-Race Challenge to Run all 3 Races (10.3 Miles)

Half Marathon Time Limit

  • There is a 4-hour time limit (8:30am-12:30pm) on the half marathon. Timing ends at 12:30pm. If you are unable to complete the race (any race) in this time, please pick a shorter race option.

Race Course Details

The run course is out and back on bike path. See the maps below.


There is plenty of parking in downtown Miamisburg. You can park on the street or in public parking lots.


There are restrooms at Bennetts (registration), and in Riverfront Park (the Start / Finish Line).

The Start and Finish Line

The Start / Finish Line will be at Riverfront Park in Miamisburg at 3 North Miami Avenue, Miamisburg, OH 45342.

Registration, Packet Pickup & Post Race Party

Registration & Post Race at Bennett's Publical Family Sports Grill at 67 S Main St, Miamisburg, OH 45342. You can register online through race morning and also on-site at Bennett's Publical Family Sports Grill. We recommend you arrive at least an hour before your race. 

Race Course Turn-by-Turn Directions

  • All courses are out and back on the Great Miami River Recreational Trail.
  • The 1-Mile Course turns around at the 0.5-Mile Mark and returns to the finish line by running South on the trail
  • The 5k Course turns around at the 1.55-Mile Mark and returns to the finish line by running South on the trail
  • The 10k Course turns around at the 3.1-Mile Mark and returns to the finish line by running South on the trail
  • Once you have completed the course, please return to for the post-race party

Strollers are welcome on course, but our insurance does not allow furry friends to attend. Sorry.

Halloween Themed Aid Stations

We will have 6 Decoration Stations along the course for your entertainment. 3 of them will be aid stations will also have music, Grandpa Joe's candy, water, and volunteers. Registration and the Start / Finish Line will also be decorated on the Halloween Theme! 


  • TBD a.m.: Adult & Youth Costume Contest at the Riverfront Park Stage
  • 7:00-9:45 a.m.: Registration & Packet Pickup at Bennetts
  • 8:30 a.m: Halloween Half Marathon Start at Riverfront Park
  • 9:00 a.m.: 1-mile (Monster Mile) Start at Riverfront Park
  • 9:20 a.m.: 5k Start at Riverfront Park
  • 10:00 a.m.: 10k Start at Riverfront Park
  • 12:30 p.m.: Timing Ends, all runners have completed the course
  • 9:00 a.m. - 12:30 p.m.: Post-Race Party at Bennetts

Beast 3-Race Challenge

  • You will run each of the 3 races separately. You will start 1-mile and finish it. Then have a break until the 5k starts. You will start the 5k and finish it. You have another break until the 10k starts. Then you start the 10k and finish it. 
  • Each race will start on time. You will have a limited amount of time to finish each individual race before the next race starts. You will have the following times to complete each race: 1-mile = 20 minutes; 5k = 40 minutes & 10k = 90 minutes. Should you not finish in the allotted time you may continue racing, but your time will not be adjusted. This means that if your 5k takes longer than 40 minutes, that is okay. You finish the 5k, and start the 10k immediately. But your 10k time will have started with everyone else, and the timers will not be able to adjust that time. You must also finish the 10k in the allotted time regardless of when you start. We ask that you try to finish all 3 races (1-mile, 5k & 10k) inside the designated times.  
  • Athletes may use the same bib and timing chip for each race. You DO NOT need to change bibs or chips. This is a change from 2019, so please note you keep and use the same bib and timing chip for all 3 races. 
  • Racers will get a Beast Finisher Medal (medals may be limited so check the specific event site for more details) and a race medal for the specific event.

Racing Attire, Costumes, and Contest

Halloween is a time to express yourself, and we think running in costume is more fun. So, we encourage you to wear silly, super, spooky, sophisticated, satirical, stealthy, and even simple costumes. This is a family event, so please keep your costumes in good taste. Costumes are not required, but you might just get more candy! Plus our costume contest will award those costumes with the most creativity. See the schedule above for judging.

Costume Contest for Adults (16 years and older) will be at TBD a.m. at Registration. Categories Include:

  1. Adult Male
  2. Adult Female
  3. Best Couple (this is a group of 2)
  4. Best Group (this is a group of 3 or more people)

Costume Contest for Youth and Kids (15 years and younger) will be at TBD a.m. at Registration. Categories Include:

  1. Kid Male (6 years old and younger)
  2. Kid Female (6 years old and younger)
  3. Youth Male (age 7-15)
  4. Youth Female (age 7-15)
  5. Best Family Costume (minimum 1 adult and 1 child)

In-Race Photos & Photo Booth

We will have a photographer out on course to take your pictures while you race. Then after your race you can pose with your friends, family and team at our FREE photo booth. We will post all pictures on Facebook after the race for you to like, tag and share!

Event Pricing

(1) January-March; (2) April-June; (3) July-September; (4) October 1-23; (5) Race Weekend Oct 24-25. Everyone enjoys post-race party with photos, food, drinks, and a super fun race!

  • Athletes Being Pushed, Pulled or Carried are Free and Do No Need to Register = $0
  • Youth 12 and Under, Youth Fun Run, Does NOT include timing, event shirt, or finisher medal = $10
  • All ages, Adult Fun Run, Does NOT include timing, event shirt, or finisher medal = $20
  • Youth 12 and Under, Any Race, Includes timing, event shirt, & finisher medal = $30
  • All ages, 1-Mile Race: Includes Swag and Timing = $30-35-40-45-50*
  • All ages, 5K Race: Includes Swag and Timing = $35-40-45-50-55*
  • All ages, 10K Race: Includes Swag and Timing = $40-45-50-55-60*
  • The Beast 3-Race Challenge (10.3 miles: Run the 1-mile, 5k & 10k): Includes Swag, Timing, Halloween & Beast Finisher Medals = $60-65-70-75-80*
  • Half Marathon: Includes Swag and Timing = $85-90-95-100-105*

* If you skip the event tee you can save $5; upgrade to long-sleeve tee for $5. 

NOTE: Registration is not refundable under any circumstances. Those registering for the low-cost race option do not receive event timing, event tee, and finisher medal. Everyone receives post race meal and drink. 


Riverfront Park in Miamisburg at 3 North Miami Avenue, Miamisburg, OH 45342.

Canceled due to COVID-19; See you in 2021.

Register  |  FAQ  |  Results  |  Photos  |  Training Plans  |  Athlete Guide  |  Coaching