JONATHAN WIGGS/GLOBE STAFF

Brian Gannon offered peanuts at the upper left field corner of Fenway Park, where he and other fans could see the Boston Marathon.

JONATHAN WIGGS/GLOBE STAFF

Looking out from the upper left field corner, marathon runners could be seen going by.

JONATHAN WIGGS/GLOBE STAFF

Turn around, and the Sox game against the Rays was spread out below.

JONATHAN WIGGS/GLOBE STAFF

“It’s a Boston holiday. The Sox game is just a piece of what’s happening in the city,’’ said Gannon, who has been coming to Patriots Day games for a decade.