Running
50 Mile
80.5 km
Start: 03:00 AM
80.00 EUR
Chicago Lakefront Ultras
Loading map…
Road runs in United States, Chicago
Distances
Running
50 Kilometer
50 km
Start: 04:00 AM
60.00 EUR
Running
Half Marathon
21.1 km
Start: 05:00 AM
50.00 EUR
About
Chicago Lakefront Ultras is a semi-annual ultra series held along Chicago’s scenic lakefront, featuring a 50-mile, a 50-kilometer, and a half marathon at either a Northside or Southside location each season.
Catering & aid stations
Aid stations stocked with water, energy drinks, soda, cookies, pretzels, potato chips, candy, fruits, and first aid supplies; limited HUMA gels available. On-course Verpflegung includes rice and beans at the finish.
Pacers
Pacers are used for the 50/50 events. Refer to the ‘Renntag für Laufende’ page for target times per startwave and pacerflaggen. Early starts may be granted by request and approval; early starters and runners finishing after cutoffs are recognized as finishers but not eligible for awards.
Results
View official resultsSurface mix
- 100% asphalt
Typical weather in Chicago
Monthly averages based on historical data (2000–present).
Jan31°21°
↑ 07:17
↓ 16:44
Feb33°21°
↑ 06:48
↓ 17:23
Mar41°30°
↑ 07:03
↓ 18:58
Apr51°40°
↑ 06:10
↓ 19:32
May63°52°
↑ 05:31
↓ 20:05
Jun75°64°
↑ 05:15
↓ 20:29
Jul80°70°
↑ 05:29
↓ 20:25
Aug78°69°
↑ 06:00
↓ 19:52
Sep72°63°
↑ 06:32
↓ 19:01
Oct60°51°
↑ 07:04
↓ 18:10
Nov47°38°
↑ 06:42
↓ 16:31
Dec36°27°
↑ 07:13
↓ 16:21
Prices & signup
- 50 Mile80.00 EUR
- 50 Kilometer60.00 EUR
- Half Marathon50.00 EUR
Last updated: Jun 5, 2026, 08:11:51 PM
Get RaceAlerts
We'll email you when races match your filters. No spam — only what fits your goals.
Related runs
On your marks
Loading race details…