18th Annual F^3 Lake Half Marathon & 5k

18th Annual F^3 Lake Half Marathon & 5k 2027 Course Analysis

18th Annual F^3 Lake Half Marathon & 5k is a half marathon held in Chicago, United States of America, scheduled for Saturday 30 January 2027. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level. For registration and full race details, visit the official 18th Annual F^3 Lake Half Marathon & 5k website.

Elevation Profile

This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.

Surface Type: Road

18th Annual F^3 Lake Half Marathon & 5k is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.

How Difficult Is 18th Annual F^3 Lake Half Marathon & 5k?

Our difficulty rating for 18th Annual F^3 Lake Half Marathon & 5k is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.

Looking for an easier marathon or a tougher challenge? You can also compare 18th Annual F^3 Lake Half Marathon & 5k against other half marathons to find the right race for your goals.