River Rat Obstacle 5K takes place at 2309 Aull Ln. in Lexington, Missouri on August 29, 2026. This obstacle course 5K starts at 9:00 AM and costs $35 to $40 to enter. The event is designed for runners and obstacle course athletes looking for a mid-distance challenge with barriers integrated into the course. Registration fees fall within a moderate range typical for regional obstacle races. The morning start time allows participants to complete the race before peak heat, making it suitable for those training in obstacle course racing or looking to add variety to their endurance racing schedule.
From the Race Organizer
Pre-Register by Wednesday, July 31st, 2026 to receive this year's shirt and guarantee your shirt size. Limited quantities will be available for registration after 7/31/26, including race day registration. Description : Please join the The LEX Auditorium & Civic Center for their 2026 fundraiser: The "River Rat Obstacle 5K & 1 Mile Fun Run/Walk" on Saturday, August 29th, 2026 @ 9:00AM! All proceeds will be donated to support the Lexington Cross Country team expenses (out of town meets, gear, etc.). Your participation in fundraising will help the traditions that have been started with this program strong! Past fundraised money has helped the program buy team warm-ups, paid for summer camps for runners, and helped fund out of town meets for the teams. Where : The Obstacle 5K and 1 Mile Fun Run will be run on the Battle of Lexington Cross Country Course which is on the Lexington High School campus at 2309 Aull Lane, Lexington, MO. The 5K Obstacle course will have some obstacles throughout the course to include (but not limited to): hay bale hurdles, car tire maze, an inflatable obstacle course, a giant slip n' slide on the course, and an inflatable slip n' slide finish. The 1 mile fun run/walk will include hay bale hurdles, a giant slip n' slide on the course, and the inflatable slip n' slide finish. When : The race will be hosted @ 9:00 am on August 29th, 2026. Race Day registration will be from 7:30-8:30 am. The 5K obstacle race will start at 9:00am and the 1 mile fun run will start at 9:45am Cost : The "River Rat Obstacle 5K & 1 Mile Fun Run" will cost $35 (pre-register by 7/31/26) OR $40 after 7/31/26 and on race day which includes a race t-shirt (as supplies last on race day). Checks payable to: “The LEX”. Please pre-register by Wednesday, July 31st (pre-registered participants will have first priority on shirt sizes). ALL registration will be done through runsignup.com. The Course : The course is mostly grass with some dirt trails and one bridged crossing. The course is relatively flat with some minor hills. The course MAY get muddy with rain so be prepared. The 5K Obstacle course will have some obstacles throughout the course to include (but not limited to): hay bale hurdles, car tire maze, inflatable obstacle course, and a slip n' slide finish. The 5K course is a 2 loop course so obstacles will be completed twice (approximately 1.5 miles per loop). The 1 mile fun run will include hay bale hurdles, the giant slip n' slide on the course, and the slip n' slide finish. Reminder, because this is a "Fun Run", all obstacles are optional and can be skipped if you choose. Giveaways: ALL participants will receive a race shirt with registration (Shirt sizes only guaranteed with pre-registration) Awards: This is a FUN RUN . NO official times or medals will be awarded.
Hotels Near This Race
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River Rat Obstacle 5K & 1 Mile Fun Run/Walk 2026 — Lexington, MO
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Race Travel Insurance
Don't forget travel insurance for August 29.
You've trained for months and booked a trip to Lexington, MO.
A pre-race injury, a delayed flight, or a family emergency can derail the whole thing.
Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it,
and may cover medical costs if something goes wrong on the course. Plans typically only run
5-7% of your total trip cost — and running events are covered under standard plans with no
additional coverage needed.
Trip cancellation up to 100% of prepaid costs
Running events covered under standard plans — no add-ons needed
Trip interruption up to 150% of non-refundable costs
When is River Rat Obstacle 5K & 1 Mile Fun Run/Walk 2026 — Lexington, MO?
River Rat Obstacle 5K & 1 Mile Fun Run/Walk 2026 — Lexington, MO takes place on August 29, 2026. The race is held in Lexington, Missouri.
Where is River Rat Obstacle 5K & 1 Mile Fun Run/Walk 2026 — Lexington, MO held?
River Rat Obstacle 5K & 1 Mile Fun Run/Walk 2026 — Lexington, MO is held at 2309 Aull Ln. in Lexington, Missouri.
Where can I find hotels near River Rat Obstacle 5K & 1 Mile Fun Run/Walk 2026 — Lexington, MO?
RaceHotelFinder shows hotels sorted by distance from the race venue in Lexington. Use the map or list view on this page to compare options and book race weekend accommodation.
