HammerHead Ocean Marathon

About the Event

Open Water swim featuring 3 distances to choose from, starting in front of the Jax Beach Lifeguard Station, Jacksonville Beach, FL or a few blocks away (to swim back to the station). Choose from a 1k, 2k or 5k swim. You can also register to do this as a virtual swim (your time, your place). Water support is provided by kayaks and lifeguards for those who come to race in person. Online registration closes on Tuesday night before the race. Late Registration will be accepted at Packet Pickup Thursday and Friday night 5-7pm and 6am race morning.

Races Offered

1K

Aug 22, 2026

straighten

Distance — 1K

terrain

Type — Running

timer

08:00

sell

$35.00

2k

Aug 22, 2026

straighten

Distance — 2K

terrain

Type — Running

timer

08:00

sell

$45.00

5K

Aug 22, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

08:00

sell

$55.00

Virtual Swim 1K

Aug 22, 2026

straighten

Distance — 1K

terrain

Type — Running

timer

08:00

sell

$25.00

Virtual Swim 2k

Aug 22, 2026

straighten

Distance — 2K

terrain

Type — Running

timer

08:00

sell

$30.00

Virtual Swim 5k

Aug 22, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

08:00

sell

$35.00

Weather History

These values represent the 3-year monthly averages for August in Jacksonville Beach.

thermostat Temperature

24.5° / 31.1°

wb_sunny Feels like

27.9° / 34.6°

light_mode Avg sunshine hours

11h 28m

water_drop Avg rainfall

6.6 mm

ac_unit Avg snowfall

—

air Avg wind speed

10.9 km/h (Light breeze)

opacity Sweat loss rate

Very high

terrain Course conditions

Hard and dry surface

sunny Max UV Index

High (7.0)

humidity_mid Humidity

81.2%

wb_twilight Sunrise

06:53

nightlight Sunset

20:05

About Jacksonville Beach

Learn more about the host city, Jacksonville Beach.

Established in 1884, Jacksonville Beach has developed for over a century. The unique culture, history and traditions make this destination more than just your average beach stay. Celebrations like the Opening of the Beaches are deeply rooted in the city at large. Composed of an assortment of architectural styles giving the community a strong sense of place and an identity all its own.