2025 - G.R.A. 100 Mile CHALLENGE
Grayling, Michigan, United States
Apr 30, 2025
– Oct 30, 2025
Running
2025 distances
Running
G.R.A. 100 Mile Challenge
Apr 30, 2025
Ultra
12:00 AM
Free
Closed
Race date Weather
Conditions on April 30, 2025 — historical Open-Meteo data.
Temp (°C)
Minimum temperature (race-day average)
10.9°
/
Maximum temperature (race-day average)
21.6°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average)
10.9°
/
Maximum feels like — heat index / wind chill (race-day average)
21.6°
Wind (km/h)
Average wind speed (race-day average)
17.0
Precip (mm)
Average precipitation (race-day average)
2.5mm
Humidity
Average relative humidity (race-day average)
73.4%
About Grayling
G.R.A. 100 Mile CHALLENGE takes place in Grayling, Michigan, United States. The local timezone is America/Detroit.
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🏃 Plan Your Next Race in Grayling
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- Grayling Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
