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Thunder Bay Thriller 2025

  Alpena

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Thunder Bay Thriller

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Sunday 14 Sep 2025 - Alpena

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Thunder Bay Thriller is a gravel bike cycling event category race, ride in United States, state Michigan. The edition Thunder Bay Thriller 2025 is part of the circuit Michigan Gravel Race Series and will take place on Sunday 14 September 2025 with departure in Alpena, County Alpena, Michigan.

Thunder Bay Thriller is offering 3 routes (105, 43, 26 km) for gravel bike

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.

routes - courses gravel bike

  • gravel bike

  • Alpena

  • 105 km / 65 mi

  • USD

  • gravel bike

  • Alpena

  • 43 km / 27 mi

  • USD

  • gravel bike

  • Alpena

  • 26 km / 16 mi

  • USD

Date

Participants

  • Men Women

Entries

  • 13 Sep 2025 @ 17:00
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