Key Biscayne Half Marathon

Sunday, April 6, 2025 • Biscayne, FL • Course Map

Palm trees, white sand beaches and a run over a pair of bridges that span the causeway between the Florida mainland and the islands of Virginia Key and Key Biscayne are just a few of the scenes that await runners at the Key Biscayne Half Marathon.

Runners will start the out-and-back course for the race on Key Biscayne at Miami Marine Stadium, the first stadium built for powerboat racing in the United States, which was also featured in the Elvis Presley film Clambake.

The home of Bill Baggs Cape Florida State Park at its southern end and Crandon Park at its northern end, Key Biscayne is also home to a densely packed residential community in the middle of the island, with plentiful retail shops, restaurants, high-end resort hotels and marinas.

However, there’s also plenty of the not-so-distant past here on these islands, including remnants of the old Crandon Park Zoo, which opened back in 1948 and closed in the early 1980s.

A number of its cages and exhibit buildings that once housed tigers, rhinos, elephants and more still stand today, including the tracks of the monorail train that once ferried visitors around the park decades ago.

From the starting line at Miami Marine Stadium, runners will follow the half marathon route as it winds west and across the Rickenbacker Causeway before reaching the first turnaround point around mile 1.5. At this point runners turn around and head south and east along the Causeway, crossing another bridge again and weaving their way through Crandon Park. This middle stretch of the race takes runners on a mix of roads and paved trails before heading north back across the bridge.

The final portion of the half marathon takes runners back onto Virginia Key. The island is now home to the Historic Virginia Key Beach Park, which was listed on the National Register of Historic Places in 2002 to acknowledge the beach’s role in the segregation era, as it was established as a beach for only African-Americans living in the area in the mid-1940s.

This stretch of the race across Virginia Key takes runners along the water on the island before crossing the finish line back near the stadium, where the celebrations begin.

Race Weather & Climate

Nestled in the waters just off the coast of Miami in south Florida, about a 10-mile drive from Miami’s downtown area, Key Biscayne typically sees mild to warm weather in April, where temperatures typically fall from the low 60s to the high 70s.

On race day (April 6), the average low is 63ºF and the average high is 78ºF.

Past Results

Course Map

See the race route map for the Key Biscayne Half Marathon here.

Starting Time

6:45 AM


  • $59 and up for the half marathon
  • $29 and up for the 10K


To reserve your spot in the 2025 running of Florida’s Key Biscayne Half Marathon, register online at here.

Official Race Website


Ever run in the Key Biscayne Half Marathon race? Share your impressions here, or post your review in the Comments below.

See more races in: April, Florida

4 comments… add one
  • Tim Ebert November 8, 2018, 2:05 pm

    I need contact info for this. The link does not take me to registration!
    Please send me registration details for this race please.
    Key Biscayne Half Marathon
    Sunday, March 31, 2019 • Biscayne, FL
    Tim Ebert

  • Josielyn Catrasquillo July 1, 2016, 3:39 pm

    Do you have any military discount ???

  • jan summers March 12, 2016, 12:03 pm

    is this a walker friendly marathon?

  • Danny February 12, 2016, 10:15 am

    Any discount codes available for the Oct 2nd 2016 half marathon?

    Thank you


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