Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_95 (length VARCHAR, race VARCHAR)

### Question ###
What is the length of the First Union six hours at the Glen?

### Accurate SQL ###

SELECT length FROM table_name_95 WHERE race = "first union six hours at the glen"