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:
| Year | Drivers | Team | Duration/Distance | Race Title | Championship |
| --- | --- | --- | --- | --- | --- |
| 1948.0 | Frank Griswold | Frank Griswold | mi (km) | Grand Prix Watkins Glen | Non-championship |
| 1949.0 | Miles Collier | Collier Bros. | mi (km) | Grand Prix Watkins Glen | Non-championship |
| 1950.0 | Erwin Goldschmidt | Alfred Goldschmidt | mi (km) | Sports Car Grand Prix of Watkins Glen | Non-championship |
| 1951.0 | Phil Walters | Briggs Cunningham | mi (km) | Sports Car Grand Prix of Watkins Glen | SCCA National Sports Car Championship |
| 1952.0 | Briggs Cunningham | Briggs Cunningham | mi (km)† | Sports Car Grand Prix of Watkins Glen | SCCA National Sports Car Championship |
Question:
Was the Grand Prix Watkins GLen that Miles Collier raced in before 1952 a championship?
Answer:
Non-championship