Old Post Challenge MTB Race

05/10/2026

Huge thank you to our premier sponsor, Jackalope Cycling, for going above and beyond at the Old Post Challenge MTB Race! 🏆They were our largest community sponsor, and they didn't just support from afar—they were the heartbeat of the event. From providing event tents that kept us covered to the sound system that kept the energy high, and the expert bike support that kept racers on the trail, we couldn't have done it without them. 🤘🚲 Make sure to support the shops that support our racing community—go see the crew at Jackalope for your next tune-up! 🛠️

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05/04/2026

Next up in the AMBCS 2026 Race Line-Up is going to be fabulous!!!

If you live below I-40 this is the first opportunity to race above the I-40 line, a requirement to be eligible for Season Series Podium!

Registration is open!!!!!
Please join the Ozark Off-Road Cyclists for the very first annual Monumental Mayhem XC Race at Hobbs State Park! This race is part of the AMBCS series, is sanctioned by USAC, and utilizes Wolf’s Den and Karst Loop Trails.

As always, kids race free (ages 14 & under, racing in the 14 & under categories)

Thanks to Adventure Subaru’s sponsorship, these registration fees are covered in a continued effort to make mountain biking more accessible for our youth. Parent Note - Kids will need to hold a one-day or annual USAC license. AMBCS waives the hard plate fee for junior racers.

There is NO on-site registration available.

All racers are asked to enter the State Park and follow arrows to event grounds to parking located along Page Sawmill Rd.

Riders need to check in at registration, but your wait-time should be minimum. If this is your first race of the season you will need to purchase an AMBCS hard plate for $25.

https://www.bikereg.com/monumentalmayhem

05/04/2026

Headline:
Our hearts (and legs) are full! 🚲💨

Huge thanks to everyone who came out for the Old Post Challenge Race Day! Whether you were racing, cheering, or volunteering, you made today an unforgettable success for the Lake Hamilton Wolves and the Russellville Cyclone Cycling NICA teams. We saw so much grit, sportsmanship, and community spirit today. It’s clear that the future of mountain biking in Arkansas is bright! There is absolutely no way to thank everyone who made this happen in just one post. To make sure every sponsor, volunteer, supporter and anyone else I remember gets the credit they deserve, I’ll be doing Shout Out Sundays for the next year! Starting next week, keep an eye out every Sunday as we highlight the amazing people and organizations that powered this event—in no particular order, because you’re all #1 in our book. Thank you everyone for supporting our student-athletes! See you on the trails. 🌲🏁

Photo: start-line photo from Old Post Challenge 2026

05/02/2026

Don’t get lost!! Here’s a pin! 📍

View details about 1928–2346 Sheppard Dr in Russellville, AR United States on Apple Maps. Address, driving directions, images, nearby attractions and more.

05/02/2026

05/02/2026

So stoked for racing tomorrow! Course is set! Weather is phenomenal! Registration is climbing!

05/02/2026

THE CLOCK IS TICKING! ⏳
Only 6 HOURS LEFT to secure your spot for the Old Post Challenge!
Online registration officially slams shut at 6:00 PM tonight. Don't be the one watching from the sidelines—come test your grit on the fast, flowy trails of Old Post Park.🚴‍♂️ Pre-ride is officially OPEN! Get out there, dial in your lines, and get a feel for the course before tomorrow’s big show. No onsite registration is available, so this is your last chance!
🔗 Register NOW at BikeReg.com/75665

BikeReg - online cycling event registration

05/02/2026

Can’t make the Race this weekend? Still want to support Lake Hamilton Wolves NICA Team and Russellville Cyclone Cycling? Click on the picture to donate!!

Old Post Challenge: 2 Teams, 1 Goal

05/01/2026

Shout out to one of sponsors this weekend!! Thank you Jackalope Cycling for helping our racers this weekend!!