Night of the Sharks (spoiler)
I remember this episode. As a lifetime resident of Sydney it cracked me up.
The horseback chase with Weaver after Lloyd Bochner was like chasing somebody from Harlem to the Bowery via Coney Island. I don't think they missed a Sydney landmark. After chasing the bad guy towards the Harbour Bridge from the South McCloud chased him from north to south, probably to get a good view of the Opera House.
In real life the RSPCA or Animal Welfare League would have prosecuted them for cruelty to the horses. They must have ridden them ten miles!