Indiana · 50K · 25K · 10K
The Big BO 50k
The Big BO 50k is a 50K, 25K, 10K and 5K event held in Indianapolis, Indiana. It was last held on October 10, 2026 and is usually run in October; the next date hasn't been announced yet.
- Usually held
- October
- Location
- Indianapolis, IN
Race details
- Last held
- October 10, 2026
- Usually held in
- October
- Location
- Indianapolis, Indiana
- Distances
- 50K, 25K, 10K, 5K
- Course
- Flat, fast paved rail-trail course with no significant elevation change reported.
- Registration
- runsignup.com
Registration, course & weather
- Registration status
- Registration status as last checked September 25, 2026: open
- Start time
- 8:00 AM EDT
- Course profile
- Out-and-back course; Road surface
About the The Big BO 50k
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. You’ll Head east toward downtown Indy for a few mile…
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The Big BO 50k: common questions
- When is the The Big BO 50k?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the The Big BO 50k held?
- In Indianapolis, Indiana.
- What distances does the The Big BO 50k offer?
- 50K, 25K, 10K and 5K.
- How do I register for the The Big BO 50k?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the The Big BO 50k?
- Registration status as last checked September 25, 2026: open. Listed fee for the longest distance, $80 (from runsignup.com, checked September 25, 2026).
- What time does the The Big BO 50k start?
- 8:00 AM EDT.
- What is the course like at the The Big BO 50k?
- Out-and-back course; Road surface.
Plan this race in RaceRove
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