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The Spaulding Woods 50K is a technical 5.4-mile loop trail filled with rocks, roots and foot bridges. To finish the full 50K ultramarathon runners must complete six full laps, or approximately 32 miles and 4.2K feet of total gain. Visit the RACES page for more details.
A portion of each entry goes to support Spaulding Academy & Family Services. To learn how you can support Spaulding Academy & Family Services visit their website.
Ultrarunning Training Tips
Run With Us at the Spaulding Woods 50K.
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