The 2026 Crystal Lake Half Marathon & 12K returns to Crystal Lake, Illinois on September 6th for its seventh year. The race offers a challenging yet rewarding route through the scenic parks and streets of this charming town. Race morning finds participants gathering at iconic Crystal Lake Main Beach, where runners will enjoy the cool early-morning air as they set off into Lippold Park. The course loops around the park, offering views of the Dole Mansion before heading down the Prairie Path to finish in downtown Crystal Lake for a post-race celebration. This event is more than just a race; it's part of the community fabric of Crystal Lake. Since its inception seven years ago, thousands have participated, raising funds and awareness for local charities and scholarships that benefit the area’s youth. The course venue offers a mix of terrain, with mostly flat surfaces on paved roads and paths. The route includes marked arrows to ensure runners stay on track, along with dedicated marshals at key points. Water stations are available every 1.5 miles starting from mile seven, while Gatorade is provided at specific locations for hydration during the race. Weather conditions on September 6th typically range between a low of around 15 degrees Celsius and a high of about 24 degrees Celsius, with an average wind speed of approximately ten meters per second and humidity levels around 70%. Runners can expect comfortable weather but should come prepared for slightly cooler temperatures in the early morning.
Register now at https://raceroster.com/events/2026/113777/2026-crystal-lake-half-marathon-and-12k to secure your spot in this beloved local event. Bib pick-up will take place on race day from 6:30 a.m. at Crystal Lake Main Beach, where participants can also warm up or stay dry if needed. Bring your ID for verification and any other necessary items such as timing chip, water bottle, and running gear. The start location is Crystal Lake Main Beach; the event is open to runners of all ages but requires proper race-day attire. First-time participants should ensure they have everything they need before heading out on this 13-mile journey through the heart of Crystal Lake. This half marathon not only offers a beautiful route with stunning views and landmarks, but it also supports local causes that matter deeply to the community. Join thousands who come together each year for this race, which has become an integral part of the fall season in Crystal Lake, Illinois.
Races Offered
12K (7.44 miles)
Sep 06, 2026
straighten
Distance —
7mi
terrain
Type —
Running
timer
07:30
sell
$53.75
Half Marathon
Sep 06, 2026
straighten
Distance —
13mi
terrain
Type —
Running
timer
07:30
sell
$64.25
Weather History
These values represent the 3-year monthly averages for September in Crystal Lake.
thermostatTemperature
14.9° / 24.5°
wb_sunnyFeels like
13.9° / 23.4°
light_mode
Avg sunshine hours
9h 51m
water_drop
Avg rainfall
2.1 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
10.2 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
70.8%
wb_twilight
Sunrise
06:33
nightlight
Sunset
19:01
About Crystal Lake
Learn more about the host city, Crystal Lake.
Crystal Lake is a city of 40,000 people in Northern Illinois. It has a revitalized historic downtown district, which is home to many small specialty shops and businesses, and is a local shopping district.
