The Big 3K
About this race
The BIG 3K
Join Big Brothers Big Sisters of the Black Hills for The BIG 3K, a fun, family-friendly community walk/run that makes a BIG impact! Whether you run, walk, or cheer from the sidelines, every registration helps create and support life-changing mentoring relationships for local youth.
This event welcomes participants of all ages and fitness levels. Enjoy a scenic 3K course, community vendors, music, refreshments, and a morning dedicated to empowering young people across the Black Hills.
Every step you take helps connect more children with caring adult mentors, giving them the support, encouragement, and opportunities they need to reach their full potential.
Event Details
Date: Saturday, October 3rd, 2026
Location: Memorial Park, Rapid City, SD
Distance: 3K Who Can Participate: Everyone! Families, friends, runners, walkers, businesses, and community supporters are encouraged to join.
Register today and help us defend the potential of every child, one step at a time.
Pick your distance
Running
The Big 3K
Typical race-day weather
Based on 1 year of historical conditions on this event's race dates in Rapid City.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Rapid City
Different organizers, within 40 miles, in the next three months
Step by Step: A Walk Toward Wellness
South Dakota Service Dog Jog 5k
Run Crazy Horse 5K
Black Hills Veterans March and Marathon
🏃 Plan Your Next Race in Rapid City
Find upcoming events by distance:
- Rapid City 5K Races 3 races
- Rapid City Running Calendar 2026 7 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 7 Rapid City events
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