Early life
Grimes grew up in Midtown, Los Angeles. He went to Mar Vista Elementary, where they had a large embankment that Grimes would grow up to skate. At age 10, a family member introduced Grimes to skating. Additionally, as part of the LAUSD desegregation busing, Grimes attended Paul Revere Junior High in Pacific Palisades, which had one of the best banks in the city, a popular skate spot.Skateboarding
After competing in the 1975 Del Mar Skateboard Championships, Marty and his brother, Clyde, were offered sponsorships on the EZ Ryder team. Grimes is the first black skater to have a signature model.References
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