The title sequence lasted 3:02 minutes and that included the production and distribution companies, the information included in the sequence and the title its self.
0:02: appeared the famous mountain of Paramount
0:19: started the intro to the producers
0:22: introduced the film as a John Schlesinger film
0:24: the film actually starts and we can see old footage of the famous Ethiopian runner
0:46: the actors names appear
1:01: the title 'Marathon Man' slides across the middle of the screen
1:11: the names of the co-stars appear