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The Big BO 50k
Indianapolis, Indiana · Saturday, October 10, 2026 · 50K, 25K, 10K, 5K
Official race page & registration ↗The Big BO 50k takes place on Saturday, October 10, 2026 in Indianapolis, Indiana. The race offers 4 distances: 50K, 25K, 10K, 5K. For anyone travelling in, Fairfield Heights is about 7 miles away and Cincinnati is about 104 miles away.
It is one of 128 races on the Indiana calendar that October. The 25K is rare in Indiana: only three races on the calendar offer it. At $25, entry sits below the $49 median for an Indiana ultra.
- Date
- Saturday, October 10, 2026
- Location
- Indianapolis, Indiana
- Distances
- 50K, 25K, 10K, 5K
- Entry fee
- from $25
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Indianapolis: check in Oct 9, out Oct 11.
Common questions
When is The Big BO 50k?
The Big BO 50k is scheduled for Saturday, October 10, 2026.
Where is The Big BO 50k held?
The Big BO 50k is held in Indianapolis, Indiana. It is about 7 miles from Fairfield Heights and 104 miles from Cincinnati.
What distances does The Big BO 50k offer?
The listed distances are 50K, 25K, 10K, 5K.
How much does The Big BO 50k cost?
Entry is listed from $25. Check the official race page for the current price, which usually rises closer to race day.
How do I register for The Big BO 50k?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
- Oct 10Gourdy's Pumpkin Run: IndianapolisIndianapolis, IN
- Oct 10Walk Like Woodie 5kIndianapolis, IN
- Oct 11Spooky Sprint- IndianapolisIndianapolis, IN
- Oct 104 Hours in the Woods - Endurance Style Fun Run - Sponsored by Community In MotionAnderson, IN
- Oct 104th Annual YMCA Run For The Hills 5K/2KCrown Point, IN
See every race on the Indiana calendar, all Indianapolis races, Indiana 5Ks, Indiana 10Ks, or use the Race Finder for maps and filters.