From big races to Saturday morning group runs—find 10k events and connect with the local endurance sports community.
Ready to experience an unforgettable sporting event at the Woodlands Marathon? 🏃♂️
Big Rivers Waterpark proudly presents... the 2nd Annual Big Rivers Splash & Dash — Benefitting the TANGO2 Research Foundation!
Lace up your sneakers and get ready to make a splash for a cause that hits close to home. Join us Saturday, June 13th 2026 for the Big Rivers Splash & Dash, where every step you take supports critical research and awareness for TANGO2 — a rare genetic disorder that’s personally impacted the Galland family, owners of Big Rivers.
There’s a race for everyone:
Aquathlon (500m Swim & 5K Run)
10K Dash
5K Dash
Kids Dash (10 & Under)
Virtual Runs (for those that can't make it & our long-distance supporters!)
The scenic course winds through Big Rivers Waterpark and around our picturesque lake, giving you a unique view of the park. Expect fun, energy, and excitement at every turn — with the added reward of supporting a truly meaningful cause.
Why We Run:
The TANGO2 Research Foundation was a lifeline for Megan Galland, who faced her first health crisis at just six months old during a family trip. Initially misdiagnosed, Megan eventually received answers thanks to the tireless work of the TANGO2 Foundation. Now, we're running to give that same hope to other families.
WHAT YOU GET:
Custom Dynamic Polytech Race Shirt
Custom Interactive Finisher Medal
Official Custom Race Bib
Chance at Overall and Age Group Awards
Access to Special Event Swag (limited quantities – first come, first served!)
**INCLUDED EARLY ENTRY to Big Rivers Waterpark & Adventures!! (race day ONLY)
PRE & POST-RACE FUN:
DJ and Music
Sponsor Booths
Pre-Race Warm-Up
Finisher Tent with Snacks, Refreshments, and Celebration
Course Details:
Kids Dash: a spunky 100-200m fun run around the front of the waterpark! (Parents welcome to join!)
**Aquathlon (NEW!!): brisk 500m Swim around our lazy river and an adventurous 5K run around our lake and through the waterpark!
5K/10K: adventurous run around our lake and through the waterpark!
Virtual Option: chart your own course from anywhere and still receive your race swag!
Want to Go the Extra Mile?
Become a fundraiser or make a direct donation through our registration site.
Top Fundraiser: Full refund on registration + special recognition
Donate $25 or more: Get a discount on your registration (Bronze=$5, Silver=$10, Gold=$25)
VOLUNTEER & RUN:
Sign up for our “Volunteer Then Run” program! Help with packet pickup, medals, water stations, and more — then lace up for the 5K or 10K.
Join us for a race that’s more than miles — it’s a movement. Let’s Dash for Discovery, Splash for Support, and Run with Heart.
#SplashAndDash2025 #RunForTANGO2 #BigRiversWaterpark
Explore The Falls Race is the perfect balance of road and trail racing that navigates around Lake Holcomb and the streets of The Falls at Imperial Oaks community. Send the kids off and watch them finish their 1k run before you begin your own race. Whether you participate in the 5K or challenge yourself for a little more trail running on the 10K course, make the family proud and pick up one of the few hidden frozen turkeys for the upcoming holidays!
Kids 1K Course is an out and back, all on a safe, blocked off road.
The 5K Course is 1 mile road, 1 mile gravel/grass/trail, 1 mile road (out and back).
The 10K Course is 1 mile road, 4 miles trail, 1 mile road.
The 2 mile walk/run option will be only on concrete road (out and back).
The 5K and 10K run on the same roads and trails. The 5K race turns around at the 1.55 mile mark and the 10K continues on to run around Lake Holcomb then returns back on the same road (Imperial Promenade). See maps HERE.
7:30 - Kids 1K Race (12&Under)
7:45 - 10K Start
7:50 - 5K Start
7:51 - 2-mile walk Start
Included with your registration:
Race Photos Included for 2025
Event Shirt
Finisher Medal
On-course nutrition
Race bib
Age group awards
"Swag Bag" with items and coupons from our sponsors
Race Expo
Registrations after Thursday, October 16th will NOT be guaranteed shirt size*
Race Week Info:
Packet Pick Up #1
Thursday 11/6 5 P.M.- 7 P.M.
Location: Industrious Spring
4489 Riley Fuzzel Rd. Spring, TX 77386
Packet Pick Up #2
Friday 11/7 5 P.M-7 P.M.
Location: Lake Club (race start/finish at Falls Clubhouse)
31220 Birnham Woods Dr. Spring, TX 77386
Race Day Schedule:
6:30 Volunteer Meeting
7:30 Kids 1K
7:45 10K (or shortly after kids 1k clears the course)
7:50 5K
7:51 2-mile Walk
9:00ish Kids 1K Awards
9:05ish 5K & 10K Awards
10:00 Course Closes
10:00 Expo Closes
On course nutrition:
You will be able to access the hydration station twice on the 5K (mile 1.3 and 1.8) and three times on the 10K (mile 1.3, 2.5, 4.7). The biggest gap without water would be between mile 2.5 & 4.7 leaving roughly 2 miles without hydration. Plan your race accordingly.
Ready to experience an unforgettable sporting event at the Woodlands Marathon? 🏃♂️