The gravel bike cycling event Thunder Bay Thriller has been organized yearly in United States, state Michigan. The next edition of the race, ride will take place on Sunday 14 September 2025 in Alpena, Michigan as part of the circuit Michigan Gravel Race Series 2025.

If you plan to participate in the next edition of Thunder Bay Thriller , simply add the upcoming edition to « my Calendar » . If would you like to participate one day add the event to « my Bucket List » and we will inform you when the next edition is announced, by clicking on the buttons  

Organizer: The Thunder Bay Thriller is a multi-surface gravel grinder through the scenic Northeast Michigan countryside and trail system.

This fun and challenging route will take riders from rolling gravel backroads onto exciting snowmobile two-track against the picturesque Devils Lake, then weave through the woods of the Norway Ridge Pathway single/two-track system before cranking down the Alpena-Hillman Trail.

Check the previous editions of Thunder Bay Thriller below and add the ones you participated in to your successful rides in myBattistrada by simply clicking on .

• 2025 Thunder Bay Thriller 2025

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