A Cambridge man spent National Donut Day biking to every Dunkin' in Boston to raise money for multiple sclerosis research.

Adam Bigelow planned to eat one Munchkin at all of the 92 Dunkin' locations. He decided to do this ride to honor his girlfriend, who was diagnosed with MS last summer. He has raised more than $5,000 for a charity bike ride to the tip of Cape Cod with the Multiple Sclerosis Society later this month.

"I thought it would be really fun and very Boston to go to every single Dunkin' and raise awareness about why I'm doing this," Bigelow told WBZ-TV.

He began his journey at 4:30 a.m. Friday in East Boston and planned to end it in Allston-Brighton.

"Outpouring of support"

"All the Dunkin employees have been holding these signs and cheering me on; that outpouring of

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