Thousand Islands Half Marathon, 10K & 5K

Thousand Islands Half Marathon, 10K & 5K 2027 Course Analysis

Thousand Islands Half Marathon, 10K & 5K is a half marathon held in Wellesley Island, United States of America. It is scheduled for Saturday 15 May 2027. The course is run on road surface with 0m of total climbing, with its high point near 0m above sea level. For registration and full race details, visit the official Thousand Islands Half Marathon, 10K & 5K website.

Elevation Profile

This is a very flat course, with only 0m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.

Expected Race Day Weather

Based on historical weather data for May, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 9°C to 16°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a moderate chance of rain (21%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.

Surface Type: Road

Thousand Islands Half Marathon, 10K & 5K is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.

Looking for an easier marathon or a tougher challenge? You can also compare Thousand Islands Half Marathon, 10K & 5K against other half marathons to find the right race for your goals.