14th Annual Springfield Marathon & Harvest Wind Half Marathon & 10K
New Berlin, IL
Marathon, Half Marathon, 10K
Key dates
Registration opens
Oct 7, 2026
Registration closes
Oct 1, 2027
Race day
Oct 2, 2027
Email me updates about Montgomery River Run
Registration openings and major changes, like a new date or a cancellation.
Entry transfers
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Listed from Race Roster. Checked Oct 31, 2026.