
Sept 19th 2026
O'Bannon Woods State Park
A Journey along the Adventure Trail


50Mile

50k

25k

50Mile Relay

RACE DATE: Sept 19th, 2026
EVENTS: 50 Mile, 50k, 25k, 50Mile Relay.
LOCATION: O'Bannon Woods State Park - Group Camp (Start/Finish)
REGISTRATION: Online registration closes: Sept 12th at Midnight -
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Limited in-person registration available race weekend if not sold out (+$10)
CAMPING / LODGING:
Stay steps from the start/finish at the Group Camp.
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On-site lodging: $35/night
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Limited availability
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Multi-night savings options available at registration (or RunSignup store)
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Additional camping available within O’Bannon Woods State Park - Reserve online here
PRICING
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Prices increase August 1st & Sept. 1st
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$10 more in person if not sold out.
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50Mile (6:00am) - Early $110/ Standard $125/ Late $145
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50 Mile Relay (2-4person) (6:00a.m.) Per Person - Early $45 / Standard $55 / Late $65
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50k (8:30a.m.) - Early $90 / Standard $105 / Late $115
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25k (9:00am) - Early $65/ Standard $80/ Late $90
ITR Members receive 15% discount (apply at checkout or contact us if not shown).
RACE EXPERIENCE:
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Big Ol' Finisher medals
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Optional live tracking ( RACEJOY )
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Age group awards (Top 3 M/F per division) + Top 3 M/F Overall awards
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Age Groups: 19 & Under, 20-29, 30-39, 40-49. 50-59. 60-69, 70+
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Fire pit & festival atmosphere
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Post-race meal & fun atmosphere
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Campground near finish area
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Crewing at Start/Finish Lap & St Rd. 462 (50Mile & 50k)
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Drop bags are allowed at these locations as well
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Bunkhouse camping available steps from Start/Finish
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Well marked course
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Great Aid Stations
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Experience a 25Mile loop on most of the Adventure Trail or unique single loop for the 25k
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Make it a true Adventure weekend with nearby attractions: Marengo Cave, hiking, kayaking, mtb biking, camping & more!
Optional apparel (hoodies & shirts) available — must be ordered by Sept 1. Race day apparel purchases not guaranteed. We are unable to ship purchases not picked up during the event.
Adventure Trail Ultras at O'Bannon Woods State Park is a rugged, scenic trail race just 30 minutes from Louisville, featuring a 50 Miler (+ Relay), 50K, and 25K built around the rugged Adventure Trail system. Experience the best of southern Indiana as you traverse rolling ridgelines, deep forests, rocky trails, creek crossings, and everything in between. Every mile delivers a new challenge and a new reason to keep exploring.
50 Miler & 50 Mile Relay - 16 Hour cutoff (With Crewing & Drop Bag opportunities) -7800* feet of climbing & descent
The premier event of the weekend, runners complete the challenging 25-mile Adventure Trail loop twice. With a generous 16-hour cutoff, participants have the opportunity to tackle the course at their own pace while still experiencing a true ultra-distance challenge. Runners will have both drop bag & crewing opportunities along course.
50K - 13.5 Hour cutoff (With Crewing & Drop Bag opportunities) - 4700* of climbing & descent
The 50K begins with a unique 6-mile introductory loop before joining the main 25-mile course at mile 2.2. From there, runners complete one full lap of the Adventure Trail loop, creating a true ultra-distance experience with all the challenge and scenery of the full course. Runners have 13.5 hours to reach the finish line. Runners will have both drop bag & crewing opportunities along course.
25K -13 Hour cutoff - 1840* climbing & descent
Perfect for runners looking to step into longer trail races, the 25K starts on a separate section of trail, covering approximately 7 miles before intersecting the main Adventure Trail loop. Runners then continue on the shared course to the finish, experiencing many of the same highlights as the longer distances. The 25K features a generous 13-hour cutoff, making it welcoming to both runners and hikers looking to enjoy a full day on the trails.
No matter the distance, expect rolling and technical singletrack, scenic ridgelines, creek crossings, steady climbs, and fast forest sections throughout the day.
Beyond the race itself, O'Bannon Woods State Park offers camping, bunkhouse lodging, hiking, mountain biking, kayaking, and nearby attractions & caves, making this much more than a race—it's a full outdoor adventure weekend.
With well-stocked aid stations, optional live tracking, great post-race food, and a welcoming trail community, Adventure Trail Ultras is built for runners chasing challenge, scenery, and an unforgettable finish line experience.
The Blue River is the only habitat in Indiana for the Hellbender salamander. Learn more about this incredible species—and how to help protect its future HERE!
VOLUNTEERING
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If you are unable to run please consider Volunteering, Volunteers are Essential to this event!
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Volunteers receive FREE T-Shirt, Free Festival Camping, Meal & Discounts into future races
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Register to volunteer HERE or email us for opportunities!


COURSE MAPS
50Mile 7800* / 50k 4700* / 25k 1840*
Click top left to open interactive map
GUIDEBOOK COMING...
STAY TUNED!

AID STATION INFO
Drop bags/ Crewing for 50Milers & 50k runners only!
50 Miler 16 Hour Cutoff - 50k 13.5 Hour Cutoff - 25k 13 Hour cutoff

EVENT SCHEDULE
Friday, Sept 18th
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5:00p.m.-8:30p.m.
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Packet Pick-up / Late registration (if available) Location TBA
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Runners May Check into Group Camp Lodging (Details in Guidebook)
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10:00p.m. - Quite hours for runners
Saturday, Sept 19th
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5:00a.m.-5:45am: 50 Miler / Relay Check in
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We Strongly encourage you to check in Friday evening, we can not stress this enough!
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6:00a.m. 50Miler/ Relay Start
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Start is @Group Camp
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6:00am -7:45am: 50k & 25k Check in
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8:30am: 50k Start
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Start is @Group Camp
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9:00am: 25k Start
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Start is @Group Camp
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10:00p.m. Final cut off for ALL Distances.
Sunday, Sept 20th
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8:00am-9:30a.m: Breakfast
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Must purchase prior to online store close
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12:00p.m: All Participants staying in Bunkhouses must go home!


Directions
Race Start will be @Group Camp at O'Bannon State Park
SUPPORTING SPONSORS & EVENT PARTNERS
EMAILS US INFO@DINOSERIES.COM IF YOU WOULD LIKE TO GET CRAZY WITH US!
























