The fire broke out inside Castle Rock Bike and Ski on 725 N. Wilcox Road between 7th and 8th.
No one was inside, and no one was injured fighting the fire.
25 units and 60 firefighters helped put out the blaze.
Four neighboring businesses have smoke damage, but fire damage was contained to the bike shop.
Crews were able to remove a lot of the merchandise from the store.
Wilcox Road was closed during the mop-up operations.
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