The Big BO 50k
- Date Sat 10th October 2026
- Time 7:00AM EDT
- Location Indianapolis, Indiana
- Price $43.75 - $96.75
- Races 4 races
- Distances Ultra, 10km, 5km
Event summary
Get ready for an exhilarating running experience at the First Annual Big BO 50K Ultramarathon, taking place on Saturday, October 10, 2026, in Indianapolis, Marion. This exciting event welcomes runners of all levels to tackle a flat and fast course along the newly completed B&O Trail. The race kicks off at Daredevil Brewing Co. in Speedway, the Racing Capital of the World, and takes participants on a scenic journey through the beautiful Marion and Hendricks County.
Whether you’re a seasoned ultrarunner or trying out a 50K for the first time, the Big BO 50K offers the perfect opportunity to push your limits and achieve personal bests. Don't miss this chance to join fellow running enthusiasts on an unforgettable adventure that promises to be both challenging and rewarding. Remember to register by September 22 to secure your medal and shirt! Stay Active. Stay Healthy. Stay Obsessed!
Whether you’re a seasoned ultrarunner or trying out a 50K for the first time, the Big BO 50K offers the perfect opportunity to push your limits and achieve personal bests. Don't miss this chance to join fellow running enthusiasts on an unforgettable adventure that promises to be both challenging and rewarding. Remember to register by September 22 to secure your medal and shirt! Stay Active. Stay Healthy. Stay Obsessed!
Organiser's Description
**PLEASE NOTE IF YOU REGISTER AFTER 9/22, WE CANNOT GURANTEE MEDAL OR SHIRT**
Stay Obsessed. and the B&O Trail Association are proud to welcome you to the First Annual Big BO 50K Ultramarathon
Join your fellow run obsessed friends on the newly completed B&O Trail for a fast, exciting 50K experience unlike any other in central Indiana.
The journey begins at Daredevil Brewing Co. in the heart of Speedway the Racing Capital of the World and covers the entire length of the B&O trail through Marion and Hendricks County. Youll Head east toward downtown Indy for a few miles before turning around head out to rural Hendricks County before making the return trip back to Speedway.
This course is flat, fast, and built for big goals. Whether you're dipping your toes into the world of ultrarunning for the first time or chasing a shiny new 50K PR, the Big BO 50K delivers the perfect stage to test your limits.
Stay Active. Stay Healthy. Stay obsessed.
Stay Obsessed. and the B&O Trail Association are proud to welcome you to the First Annual Big BO 50K Ultramarathon
Join your fellow run obsessed friends on the newly completed B&O Trail for a fast, exciting 50K experience unlike any other in central Indiana.
The journey begins at Daredevil Brewing Co. in the heart of Speedway the Racing Capital of the World and covers the entire length of the B&O trail through Marion and Hendricks County. Youll Head east toward downtown Indy for a few miles before turning around head out to rural Hendricks County before making the return trip back to Speedway.
This course is flat, fast, and built for big goals. Whether you're dipping your toes into the world of ultrarunning for the first time or chasing a shiny new 50K PR, the Big BO 50K delivers the perfect stage to test your limits.
Stay Active. Stay Healthy. Stay obsessed.
Races
-
50k
Incl. $6.75 Fee & T-Shirt
Sat 10th October 2026 (7:00AM EDT)
$96.75
CLOSED3:00 PM Cutoff Time. -
25k
Incl. $5.55 Fee & T-Shirt
Sat 10th October 2026 (9:00AM EDT)
$75.55
CLOSED -
10k
Incl. $4.23 Fee & T-Shirt
Sat 10th October 2026 (9:00AM EDT)
$52.23
CLOSED -
5k
Incl. $3.75 Fee & T-Shirt
Sat 10th October 2026 (9:00AM EDT)
$43.75
CLOSED
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Daredevil Brewing Co., 1151 N Main St., Indianapolis, 46224, IN, United States
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The Big BO 50k
