user: Question: What is the distance of the Sam's Town 250 race?
Columns: ['Date', 'Race', 'Distance', 'Venue', 'Radio']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['02/16/2008', 'Camping World 300', '300 Miles', 'Daytona International Speedway', 'MRN']
SQL:

assistant: SELECT "Distance" FROM "Table" WHERE "Race" = 'Sam''s Town 250';