Miami Beach Halloween Half Marathon

Miami Beach Halloween Half Marathon is scheduled for October 24, 2026 in Key Biscayne, Florida. Two Halloween-themed distances are on the program: a half marathon (13.1 miles) and the Freaky 4-Miler. Both are open to runners and walkers of every level and age, timing is optional, and a virtual entry is available if you cannot be there in person. Everyone who signs up receives a shirt, a medal and a training pack, mailed to their address.

The half marathon is a sensible step up if you have a few 10Ks behind you: twelve weeks with one weekly long run building toward 11 or 12 miles gets most runners to the finish in one piece. The 4-miler suits anyone still working on consistency, or a runner who wants a short, sharp effort instead. With optional timing and a small, relaxed field, it is also a low-stakes place to try running in costume without worrying about the clock.