Sage City Triathlon

Trail/Road Half Marathon, 10K Run/Walk, or nighttime Trail-Glo 5K Run/Walk, benefitting Robert Allerton Park!

Trail-Glo 5K start time is 8:30PM 11 April.

Half Marathon and 10K start time is 9:00AM 12 April.

More race info at our website!

Help us help Make-A-Wish families! For our 14th consecutive year, Allerton Races is fundraising for Make-A-Wish Illinois. Be a "Wish Warrior" by donating $10 or more, and you'll get a special logo on the sleeve of your race T! (If you register with a race T) Donate to Make-A-Wish Illinois by clicking HERE!

Participating in the Kirby Derby is a great way to maintain a healthy and active lifestyle while having fun. All the proceeds go to the development of the Wellness Trail provided by the Kirby Foundation. For more information and online registration click on the links above.

T-shirt deadline is 11:59pm cst on April 3, 2026!

Please note that registration will be open until 7:30am on race morning, however there will be no cash registration available at the park on race morning. Same day registration will be completed on your mobile device. If you need to switch events, the deadline to do so is 12pm the day before the race.

Bib and shirt pickup will be Friday from 4-5:30pm or on race morning 6:45-7:45am. Both will take place at the park pavilion.

Announcements and National Anthem will be at 7:45am. The race will start promptly at 8am.

Please note that this is not a closed course. We do our best to inform the community of the race and encourage them to use alternate routes when possible. We will have a volunteer at every intersection to help guide participants and stop any oncoming traffic.

We will have two water stations available this year. The first water stop will be by Nick's Park and the second will be by Monticello Laundry. 10K runners will pass the second stop twice.

The 5K award ceremony will start at approximately 9am with the 10K awards immediately following.

For the latest race updates, follow our Facebook page: https://www.facebook.com/KMCKirbyDerby/

The KMC Sage City Classic is a cycling road race held in Monticello, Illinois, featuring a scenic course through Piatt County. The event is designed to accommodate both competitive and recreational riders, offering smooth pavement, open terrain, and an enjoyable road racing experience in central Illinois.

This race will be held on Saturday, August 22 with two distance options. The 50K is intended to be a more laid-back race, ideal for riders newer to road racing or those looking for a shorter, less intense event. The 100K is a more competitive race that emphasizes endurance, pack riding, and race strategy. Riders registering for the 100K should be able to maintain a minimum average speed of 15 mph; participants who are unsure they can meet this pace are encouraged to select the 50K.

Awards will be given to the top three overall male and female finishers in both races, with additional age group awards in the 100K.

100K Age Group award categories: 19 and under, 20-29, 30-39, 40-49, 50-59, 60-69, 70+

Participants who register by July 17 will receive a free Sage City Classic race shirt with their entry.

The KMC Sage City Classic is focused on providing a safe, well-organized event and a quality road racing experience for riders of all levels.

Second Wind Running Club welcomes you to the Allerton Park Trail Run!

Let's hit the trails! A good portion of the 5.7-mile course follows the Sangamon River which has proven quite challenging over the years. Runners may find hidden roots, ruts, sharp turns, and other obstacles. We donate a portion of the proceeds back to Allerton Park for trail maintenance or park enhancements. Our donations have been used towards a railing at a dangerous spot, trail erosion control, recycle bins, water fountain bottle filling station, a new café in the visitor's center, and more. We feel quite fortunate that the park allows us to bring so many into it and pound the trails!

Can't join us on race day 10/25/26? Sign-up for the VIRTUAL options instead! Please note that you will not be eligible for any age-group awards. Virtual results can be entered from 10/25/26 through 10/31/26.

Want to receive a race shirt? Deadline to register and guarantee a shirt is Wednesday, October 14th, 2026.

Don't want a race shirt? No problem! Select 'no shirt' instead of a size from the drop-down box during registration.

If participating in this race will qualify you for the Monticello Triple Crown, you MUST register by Wednesday, October 14th, 2026.

The race ends in the meadow where you can gather with family and friends. With the race close to Halloween, we'd love to see costumes out on the trails! Stay after the race for the overall 5.7-mile trail run awards (top male, top female, top male masters, top female masters), age group awards (top 3 M/F; 19 and under, 20-29, 30-39, 40-49, 50-59, 60-69, 70+). The 2-mile nature walk is non-competitive and no awards will be given for this event. Door prizes and costume contest prizes will be given as well!

Registration is via this page only and will end promptly on race day, October 25th, at 8:30am.

Volunteers needed! Even if you register for either activity (Trail Run or Nature Walk) for Sunday October 25th, 2026, you can also volunteer. Responsibilities will vary based on the opportunity you sign up for. The Race Director, a volunteer captain, or team lead will be available to provide direction or guidance as needed. Other experienced volunteers can also provide insights and advice. Further instructions and possibly training as needed or requested will be provided closer to the day of the event.

For safety purposes, no dogs allowed on the trail run or the nature walk.