According to Walston's family member, he has not been seen or heard from since 07-31-2025. Walston told his family member he was coming home to retrieve a few things but never arrived. Walston's friend who he had been staying with advised he has not seen him either. Walston's family member has talked with all of Mark Walston's friends, who advised that they have not seen or heard from him. Mark Walston was last seen wearing an unknown color short sleeved button up shirt and black shorts and riding a black in color beach cruiser type bicycle.