Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Track Name | Location | Length | Seating | Year Opened | Year Acquired [A ] |
| --- | --- | --- | --- | --- | --- |
| Auto Club Speedway | Fontana, CA | miles (km) | 92000.0 | 1997.0 | 1999.0 |
| Chicagoland Speedway | Joliet, IL | miles (km) | 75000.0 | 2001.0 | 2007.0 |
| Darlington Raceway | Darlington, SC | miles (km) | 63000.0 | 1950.0 | 1982.0 |
| Daytona International Speedway | Daytona Beach, FL | miles (km) | 168000.0 | 1959.0 | 1959.0 |
| Homestead-Miami Speedway | Homestead, FL | miles (km) | 65000.0 | 1995.0 | 1999.0 |
| Kansas Speedway | Kansas City, KS | miles (km) | 81687.0 | 2001.0 | 2001.0 |
| Martinsville Speedway | Ridgeway, VA | miles (km) | 65000.0 | 1947.0 | 2004.0 |
| Michigan International Speedway | Brooklyn, MI | miles (km) | 137243.0 | 1968.0 | 1999.0 |
| Phoenix International Raceway | Avondale, AZ | miles (km) | 76812.0 | 1964.0 | 1997.0 |
| Richmond International Raceway | Richmond, VA | miles (km) | 107097.0 | 1946.0 | 1999.0 |
| Route 66 Raceway | Joliet, IL | miles (km) dragstrip | 30000.0 | 1998.0 | 2007.0 |
| Talladega Superspeedway | Talladega, AL | miles (km) | 175000.0 | 1969.0 | 1969.0 |
Question:
What is the length of the track named michigan international speedway?
Answer:
miles (km)