Miami Marathon 2025 Registration Dates. But registration won’t open until aug. A waitlist will open september 16 through october 31 with spots reallocated only if a currently registered runner.

A waitlist will open september 16 through october 31 with spots reallocated only if a currently registered runner. Miami marathon 2025 dates your ultimate guide the miami marathon is a highly anticipated annual event attracting runners from all over the world if you re plann.