Every upcoming 5K around Key Biscayne, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
32 upcoming 5K races found · 1 with finish-time stats
Key Biscayne racing is shaped by one geographic fact: you are on an island connected to the mainland by the Rickenbacker Causeway, and the William Powell Bridge that spans Biscayne Bay is the highest point South Florida road runners typically encounter. Early mornings on the causeway feel busy, with runners, cyclists, and triathletes sharing the same paved ribbon under open bay skies.
Inside the island's parks the mood shifts. Crandon Park's beach and coastal paths and the lighthouse loop through Bill Baggs Cape Florida State Park offer a quieter, shadier counterweight to those exposed causeway miles. Miami's tropical heat means most people are out before the sun gets serious, and the mild winters are when running here genuinely earns its reputation.
By the numbers
The Biggest and Longest-Running
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.
Common Questions About Running a 5K in Key Biscayne
What will a Key Biscayne 5K cost me, and does the price go up if I wait?
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 spot one you want, registering promptly is worth it.
Will I get a shirt at the finish line?
30 of the 31 races say they give a shirt. Every race here publishes some giveaway detail, so you are not going in blind on that front.
Am I going to be embarrassingly slow, or will there be a range of paces?
Run for Recovery is the one race here with published finish results: across its 38 finishers, the median finish time was 40:40. That is the only measured pace figure we have for Key Biscayne 5Ks, so it is a genuine data point rather than a general estimate - and a 40-minute median suggests a welcoming spread of paces.
When is the best time of year to find a Key Biscayne 5K?
Fall (September to November) is the busiest stretch, with 14 races on the calendar. October is the single busiest month with 5 races. If you want a quieter window with fewer options, February has the fewest.
Is a Key Biscayne 5K a good choice for a first race?
Most races here also offer a 10K and a half marathon on the same day, which means you are racing alongside people doing longer distances - so the 5K field tends to feel relaxed rather than intensely competitive. The flat causeway and park routes keep the terrain manageable, and the entry fees are low enough that signing up doesn't feel like a big gamble on a first attempt.
Are there trail 5K races near Key Biscayne?
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.
