Florida · Race calendar
Upcoming running races in and near Key Biscayne, Florida - 5Ks, 10Ks, half marathons and more, with dates, pricing, finish-time stats, start-line maps, and local run clubs to train with.
32 upcoming races · 1 with finish-time stats
Racing in Key Biscayne means starting on an island and earning every mile. The Rickenbacker Causeway's climb over the William Powell Bridge is a landmark locals know well - that single exposed arc over Biscayne Bay is as close to a hill as South Florida running gets, and races here tend to lean into it rather than avoid it.
Beyond the bridge, the running fans out through Crandon Park's beach paths and the mangrove loops of Bill Baggs Cape Florida State Park near the lighthouse. Mornings on the causeway are busy with runners, cyclists, and triathletes sharing the same ribbon of pavement, so race day rarely feels like a departure from a normal training week - just a more organized version of it.
By the numbers
The Key Biscayne races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
Entry fees here run from $20 to $30, with $30 being the most common price. One race already has a price increase scheduled, so if you see a race you want and the current fee is below $30, registering sooner rather than later is worth it.
Almost certainly yes - 30 of the 31 races say they give a shirt. That is unusually consistent, and every race here publishes some giveaway detail, so you are not going in blind on what to expect at the finish.
Only 1 race has published finish-time results, Run For Recovery, which had a field of 38 and a median finish time of 40:40 across its distances. That is the only measured snapshot available here, so it is hard to draw broad conclusions - but a 38-person field means you will know most people around you by the end.
Fall (September to November) is the busiest window, with 14 races scheduled in that stretch - October alone has 5. If you want to avoid the heat and humidity that shape running on the exposed causeway and beaches, the 11 winter races (December through February) give you the mildest, drier conditions the island offers.
The majority of races here offer 5K, 10K, and half marathon distances at the same event, so you have room to move up without switching races entirely. Run For Recovery is the exception, offering 5K, 10K, and 100 Yards rather than a half marathon option.
Yes, one race around Key Biscayne gets you off the pavement: 1 mixes road and trail. Surfaces are not always published, so it is worth checking a specific race before you register.
