user: Question: How long in miles (km) was the race that lasted 3:07:53?
Columns: ['Year', 'Date', 'Driver', 'Team', 'Manufacturer', 'Laps', 'Miles (km)', 'Race Time', 'Average Speed (mph)', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1961', 'July 30', 'Jack Smith * Johnny Allen *', 'Jack Smith', 'Pontiac', '500', '250 (402.336)', '3:39:23', '68.373', 'Report']
SQL:

assistant: SELECT "Miles (km)" FROM "Table" WHERE "Race Time" = '3:07:53';