Deer Lake 5 Mile Trail Run in Killingworth, Connecticut on April 26, 2026 – a return to this beloved event after a seven-year hiatus. This race is hosted at Deer Lake Outdoor Center, formerly the Deer Lake Scout Reservation, and it's a 501(c)(3) nonprofit organization dedicated to accessible outdoor education while preserving its extensive green space and trails.
On race day, expect an early morning light that highlights the changing seasons in Killingworth, with spring just beginning. The landscape is serene, with rolling hills and dense forests, providing a backdrop of natural beauty as you run through the Deer Lake Trail Run course. The community energy on race day is palpable; local runners and families gather to support one another and celebrate this tradition.
The event has a rich history dating back many years but had an unexpected pause before its return in 2026, following a change of ownership. This year's edition promises to continue the legacy by offering a challenging five-mile trail course that involves over 500 feet of elevation gain. The course traverses the expansive Deer Lake property and offers numerous scenic views as you navigate the ever-changing elevations on well-marked trails.
The start is at Deer Lake Outdoor Center, with runners heading out onto the technical terrain almost immediately. The course features a variety of surfaces including firm ground that can be slightly soft due to possible mud, rocks, and roots scattered throughout. There are multiple aid stations along the way to keep you fueled during your run. At the finish line, there will be a sense of accomplishment as you see others crossing the finish, knowing that this is not just any race but an event with awards for overall male and female winners across different age groups.
Moving on to course conditions, runners should prepare for typical April weather in Killingworth: expect average temperatures around 10.1°C, with a range from 5.2°C at the low end up to 15.1°C during warmer moments of the day. The humidity levels are moderate at about 67.7%, and you can anticipate some sunshine but also possible light rain or snowfall depending on the exact date. Trail conditions will be firm yet slightly soft, with a UV index around 5.0, indicating that sun protection is essential.
2026 Trail Run 5 Miles
5 Miles • Start: 09:00:00 • Fee: $30.00
For those interested in participating, registration begins at $30 through March 15th and increases to $35 from March 16th until April 15th noon, then up to $40 for entries between the 16th of April till midnight on the race day. On race day itself, entry is only possible with cash or check payments.
Bib numbers will be available at a specific time and location; please visit https://runsignup.com/Race/CT/Killingworth/DeerLakeTrailRun for more information about registration URL, details of where to pick up your bib number, and other logistics. The start is set to begin promptly at 9:00 am on race day.
Please note that dogs are not allowed during the event as it’s a human-only run. First-timers will find this an exhilarating experience; Deer Lake Outdoor Center offers accessible outdoor education making this trail run suitable for all skill levels, with age requirements noted and appropriate adult supervision recommended for participants under 10 years old.
In closing, the Deer Lake 5 Mile Trail Run on April 26, 2026, in Killingworth, Connecticut is an event that matters because it brings together a community of runners who cherish nature and share a love for running. Register now to guarantee your T-shirt!
