WWhether you want to run, walk, swim, or bike, there are tons of outdoor fitness activities happening every month on O’ahu.
SEE ALSO: The ultimate guide to hiking on O’ahu
Biathlon Magic Island
January 24, 2026
Where: Ala Moana
Route: A 5km run around Ala Moana Beach Park and a 1km swim in front of the park
waikikiswimclub.com, @waikikiswimclub
Photo: Courtesy of Hawaii Pacific Health
Hawaii Pacific Health Women’s 10 & 5K Fun Run
January 25, 2026
Where: WORK / Diamond head
Route: Both the 10K and 5K races start and finish at Kapi’olani Park and take runners through Diamond Head and Kāhala.
hawaiipacifichealth.org, @hawaiipacificealth
Valentine’s Biathlon
February 14, 2026
Where: Ala Moana
Route: 5km run around Ala Moana Beach Park and 1km swim in front of the park
waikikiswimclub.org, @waikikiswimclub
Pineapple Sprint
February 22, 2026
Where: Hale’iwa
Route: This 11-mile cycling sprint starts in Hale’iwa and goes up a stretch of Kamehameha Highway known as Pineapple Hill.
asbra.com, @alohastateracing
King’s Runner 10K
March 1, 2026
Where: Ward/Kaka’ako/Ala Moana
Route: It starts at Thomas Square, takes you through downtown Honolulu, Waterfront Park and Ala Moana Beach Park before ending back at Thomas Square.
kingsrunner10.com
Swimming with fins
March 21, 2026
Where: Ala Moana
Route: TBA, usually a 2K swim at Ala Moana Beach Park
waikikiswimclub.com, @waikikiswimclub
Tantalus Time Trial
April 7, 2026
Where: tantalus
Route: This 4.4 to 4.6 mile uphill bike race starts on Makiki Heights Drive and goes up Round Top Drive
asbra.com, @alohastateracing
The North Halle’s Mood Half Maral 25
April 12, 2026
Where: Gushing waters
Route: The 12.1km race starts at Kalākaua Avenue, runs through downtown Honolulu and back before finishing at Kapi’olani Park.
thehapalua.com, @thehaa
Color Run for a Cause
April 18, 2026
Where: KOHA EM
Route: The 2.1-mile course is located at Naval Base Hawai’i
hawaii.usmc-mccs.org
Kalaala, Tring de Tring de Laisa.
April 19, 2026
Where: Halewais
Route: It includes a 500-meter swim in Kailua Bay, a 3.5-mile run at Kailua Beach Park, and a 10-mile bike ride along Kailua Bay and around Kailua.
boachawaii.com, @boykawaii
Photo: Courtesy of the Hawai’i Bicycling League
Hale’iwa Metric Century Ride
April 26, 2026
Where: White in China
Route: The 62-mile route begins at Kaiaka Bay Beach Park and runs from Camp Erdman to Hau’ula Beach State Park before returning to Hale’iwa.
hbl.org, @hblridealoha
10K pineapple race
May 2, 2026
Where: reduced
Route: It starts at Ka’ala Elementary School and takes you through Wahiawā and pineapple fields
pineapplerunhawaii.com
Honolulu today freezes
May 17, 2026
Where: Ala Moana
Route: multiple
Activities include:
- Olympic triathlon (1500 m swim, 40 km bike, 10 km run)
- Olympic relay triathlon (1500 m swim, 40 km bike, 10 km run)
- Sprint Triathlon (750 m swim, 20 km bike, 5 km run)
- Sprint Relay triathlon (750 m swim, 20 km bike, 5 km run)
- Sprint Corporate Relay
- High school triathlon (750m swim, 20km bike, 5km run)
- Youth triathlon (400 m swim, 10 km bike, 2.5 km run)
- Children’s Aquathon (50m swim, 3km bike and 1km run/100m swim, 6km bike and 1km run)
- 10K run
- Aquathlon (750 m swim, 5 km run)
- Kid of Sylelers (500m hurdler to come)
honolulutriathlon.com, @Near_Trithl
North Shore Swim Series: Summer Sprint
June 13, 2026
Where: Hale’iwa
Route: 1 mile swim from Sunset Beach Community Park to Ehukai Beach Park
northshoreswimseries.com, @northshoreswimseries
North Shore Swim Series: Waimea Bay Swim
June 27, 2026
Where: Hale’iwa
Route: A 1.2 mile swim in Waimea Bay
northshoreswimseries.com, @northshoreswimseries
Laule’a 5K, 10K and Half Marathon
July 11, 2026
Where: Ewa beach
Route: Starts at Wai Kai, takes you past Hoakalei Country Club and Nimitz Beach before finishing back at Wai Kai
aloharacing.com
North Shore Swim Series: Chuns Swim at Waimea Bay
July 11, 2026
Where: Hale’iwa
Route: A 1.6 mile swim from Chun’s Reef to Waimea Bay
northshoreswimseries.com, @northshoreswimseries
Hawai’i Kai Ultra Run XTreme
July 25 and 26, 2026
Where: Hawaii Solrene Brown
Route: Choose your own distance: half marathon, 30 km, marathon, 50 km, 50 miles, 100 km or 100 miles. The 9-mile loop trail starts and ends at Kalama Valley Park and takes you to Sandy Beach and Haha’ione Neighborhood Park.
runsignup.com, @hawaii.kai.ultra.run
North Shore Swim Series: North Shore Challenge Swim
July 25, 2026
Where: Hale’iwa
Route: A 2.33-M MI MIL MY SWM LE EU EJOUCH IN A Today
northshoreswimseries.com, @northshoreswimseries
Na Wahine Sprint Triathlon
July 26, 2026
Where: Diamonds / Diamond Head / Horry
Route: The women’s triathlon includes a 500m swim along the coast at Queen’s, a 12-mile bike ride from Kapi’olani Park through parts of Diamond Head and Kāhala, and a 5K loop run around Kapi’olani Park.
nawahineracinghi.com, @.leaspritritri
Bellows backpack
August 1, 2026
Where: KOHA EM
Route: The 9km run (with an optional weighted backpack) takes you through the fields and forest of the Marine Corps Training Area at Marine Base Hawai’i.
hawaii.usmc-mccs.org
Hawai’i Spartan Race
From August 15 to 16, 2026
Where: come down
Route: Held at Dillingham Ranch, the weekend offers a variety of events that run through fields, trails, rugged ridges and along the coast, and will have you navigating man-made obstacle courses. Activities include a Sprint 5K, Super 10K, Beast 10K, Ultra 10K and Kids Race 1-3KM.
spartan.com, @spartanrace
Dick Evans Memorial Race
August 23, 2026
Where: Hawaii Solrene Brown
Route: This 112-mile uphill bike race takes you around the island, starting at Kalama Valley Mall through Waikīkī, Downtown, Pearl City, Waipahu, Hale’iwa, Kāne’ohe and Waimānalo, before finishing back in Hawai’i Kai.
asbra.com, @alohastateracing
Photo: Courtesy of Waikiki Roughwater Swim/Cyndia Michelle
Shi of water of water
August 30, 2026
Where: Gushing waters
Route: The 3.84K course starts at the Kaimana Beach Hotel and runs along the coast to the Hilton Hawaiian Village
waikikiroughwaterswim.com, @waikikiroughwaterswim
Photo: Courtesy of the Hawai’i Bicycling League
Walk of the Century Honolulu
September 27, 2026
Where: I WORK TO CLAIM
Route: The 25- to 100-mile route starts and ends at Kapi’olani Park and takes you east through Hawai’i Kai, along the Kaiwi Coast, through Waimanalo, Kailua and Kāne’ohe with a turn at Ka’a’awa.
hbl.org, @hblridealoha
Tantalus 10-Mile Challenge
September 27, 2026
Where: Makiki
Route: It starts at Makiki Heights Drive and takes you up and down Tantalus Drive and Round Top Drive
runsignup.com, @mprrc
Honolulu Pride Run/Walk 5K
October 2026 – Date TBA
Where: Ala Moana
Route: Around Magic Island and Ala Moana Beach Park
honolulufrontrunners.org, @honolulu_frontrunners
Honolulu Marathon Clinic Turkey Trot and Fun Run
Usually the Thursday before the last Sunday in November
Where: WORK / Diamond head
Route: It includes a 5-mile run, a 1.8-mile family fun run and a 1-mile turkey chase at Kapi’olani Park, and a 5K run from Kapi’olani Park to Fort Ruger and back.
honolulumarathon.org, @ @LeLLLLalkira
Kaiwi Coast Run & Walk
November 22, 2026
Where: Hawaii Solrene Brown
Route: The 4K walk starts at Sandy Beach Park, follows the Kalaniana’ole Highway to Maunalua and ends at Maunalua Bay.
kaiwicoastrun.org, @kaiwicoastrun
He is his friend like
December 12, 2026
Where: Gushing waters
Route: Starts at Kapi’olani Park, takes you along Kalākaua Avenue and back along Waikīkī Beach
honolulumarathon.org, @ @LeLLLLalkira
Photo: Brochure/Getty Images for the Honolulu Marathon
Honolulu maran
December 13, 2026
Where: Contowation Honolulu in Hawaii in Hawai’i looze
Route: The 26.2 mile race starts at Ala Moana Boulevard, takes you through downtown Honolulu, through Waikīkī, east from Kāhala to Hawai’i Kai and back with a finish at Kapi’olani Park.
honolulumarathon.org, @ @LeLLLLalkira
SEE ALSO: The 8 Best Dog Hikes on O’ahu
Brie Thalmann is the home and style editor for HONOLULU magazine.
