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Triathlon Calendar near Crystal Lake 2025-2026

Explore the top triathlons near Crystal Lake for 2025-2026! We've gathered 63 exciting races in the area. Check out our detailed list below to find your next local race.

March 2026
Mar
15
Sunday

Deer Park St. Paddy's 10K Run/Walk

5 km 10 km
Mar
15
Sunday

March Madness Half Marathon

Half Marathon
April 2026
Apr
11
Saturday

Spring Chance BQ.2 Marathon

Apr
18
Saturday

Chicken Run

5 km 10 km
Apr
18
Saturday

Earth Day 50k

Trail Run 5 mi 15 mi 50 km
Apr
25
Saturday

Childish Nonsense

Trail Run 10 km 25 km 50 km 50 mi
May 2026
May
2
Saturday

Fight Hunger 10K

5 km 10 km
May
3
Sunday

Chicagoland Spring Marathon

10 km Half Marathon Marathon
May
9
Saturday

Mother's Day Run/Walk - St. Charles

5 km
May
10
Sunday

Barrington Mother's Day 5K

5 km
May
16
Saturday

Ducky Dash

5 km
May
16
Saturday

Run for D103 5K

5 km
May
23
Saturday

St. Francis de Sales 5k

5 km
May
31
Sunday

North Shore Classic

5 km Half Marathon
June 2026
Jun
5-7
Fr - Su

Harvard Milk Days

Jun
6
Saturday

Backyard Nonsense

Backyard Ultra 3 hr 6 hr 12 hr 24 hr
Jun
27
Saturday

Run the Runway - Wheeling

5 km
July 2026
Jul
11
Saturday

Savage Race - Chicago

Obstacle Run 3 mi 7 mi
August 2026
Aug
1
Saturday

College of DuPage Alumni 5k

5 km
Aug
8
Saturday

Raceway 5K

3 km 5 km
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