Carpe Diem - Carpe Noctem Half Marathon
Race Day Weather
Cool start — fast day potential, moderate wind
A cool 40°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 50°F through the course will gradually increase perceived effort in the second half. Moderate winds around 13mph may affect pacing on open sections of the course.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Carpe Diem - Carpe Noctem Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Carpe Diem - Carpe Noctem Half Marathon and 10K runs on trails within Proud Lake State Recreation Area in Commerce Township, Michigan. Runners choose a morning half marathon that starts at 8:30 a.m. in daylight or an evening half marathon that starts at 7 p.m. and finishes after dark. Trivium Racing has organized the trail race most years since 2018, originally held in October before shifting to an April date; finishers who complete both sessions receive two medals that connect into one piece.