user: Question: What's the distance for the Chieti to Macerata course?
Columns: ['Date', 'Course', 'Distance', 'Type', 'Winner']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['16 May', 'Vatican City to Formia', 'km (mi)', 'Plain stage', 'Wilfried Reybrouck ( BEL )']
SQL:

assistant: SELECT "Distance" FROM "Table" WHERE "Course" = 'Chieti to Macerata';