When: 10 a.m.-5 p.m. Sunday.
Where: South Park, near 11th and Massachusetts streets.
In addition to the arts and crafts fair, other events include:
l Children's events -- train rides, 10 a.m.-5 p.m., $1; wading pool, ages 6 and under accompanied by an adult, 1 p.m.-4 p.m., free; paint and play pen, 1 p.m.-4 p.m., free.
l Mass. Street Mile Run -- registration at 8 a.m., run at 10 a.m., $11 for children and $13 for adults.
l Musical entertainment -- Billy Spears Band, noon; Lonesome Hobo's, 1 p.m.; Lonnie Ray's Blues Band, 2 p.m.; Paul Gray Gaslite Gang, 3 p.m.; Key West Jazz Quartet, 4 p.m.