Kailua-Kona on Hawaii's Big Island combines clear-water SCUBA diving (notably manta-ray experiences), accessible snorkeling at sites like Kealakekua Bay, volcanic hikes and scenic bike routes. The area long hosted the Ironman Triathlon World Championship, though the event's exact status and location have shifted recently. Book popular tours early, respect protected marine areas, and check local advisories before hiking or attending events.

Kona evokes coffee, warm trade winds, and slow evenings on Hawaii's Big Island. But the activities around Kailua-Kona go well beyond sunsets and café cups.

Ocean first: diving and snorkeling

Kona is best known for its world-class SCUBA diving. The clear, deep waters along the lava coastline host abundant marine life - colorful reef fish, octopus, sea turtles and frequent manta ray encounters. Local dive operators run guided day dives, boat charters and evening manta-ray experiences that are often the highlight of a trip.

If you prefer less gear, snorkeling is widely accessible. Kealakekua Bay (home of the Captain Cook Monument) and several protected coves offer shallow reefs and easy shore or kayak access for swimmers. Many snorkeling sites have calm, clear water and vibrant coral gardens during morning hours.

On land: hikes and rides

Kona's volcanic landscape makes for rewarding hikes and scenic bike routes. Trails range from short coastal walks to steeper volcanic ridges. Local state parks and forest reserves provide marked routes and viewpoints over the island and ocean.

One local landmark often mentioned by visitors is Puʻu Io, a nearby cinder cone that offers shorter, steeper hikes and panoramic views of the Kona coast.

Events and local culture

For years Kailua-Kona hosted the Ironman Triathlon World Championship, a high-profile race featuring a 2.4-mile swim, 112-mile bike and 26.2-mile run. The event helped build Kona's reputation as an endurance-sport destination. The exact current status and location of the Ironman World Championship have changed in recent years and should be checked before planning a trip. 1

Kona's dining scene and resorts range from casual seafood shacks to upscale hotels with ocean views. Many visitors mix active days with evenings exploring Kona's restaurants, farmers markets and coffee shops.

Planning tips

  • Book popular dive and manta-ray tours in advance, especially during winter months and holiday periods.
  • Morning is often the best time for snorkeling: calmer seas, better visibility.
  • Respect marine protections: some bays are designated conservation areas with rules about anchoring and fishing.
  • Check trail conditions and local advisories before hiking; volcanic terrain can change.
Kona activities fit many travel styles. Whether you want an action-packed trip of dives and long hikes or a relaxed visit with good food and mellow beaches, Kona delivers a mix of ocean and island experiences.
  1. Confirm the correct local name, location and elevation for Puʻu Io (spelling, geographic details).
  2. Verify the current status and regular location of the Ironman Triathlon World Championship and whether Kailua-Kona hosts the event in the current season.

FAQs about Kona Hawaii Activities

Is Kona good for SCUBA diving?
Yes. Kona's clear offshore waters and lava-formed coastline support diverse marine life and popular dive sites, including night dives with manta rays run by local operators.
Where can I snorkel in Kona?
Kealakekua Bay and several protected coves along the Kona coast offer easy shore or kayak access to shallow reefs. Morning hours usually have the best visibility.
Can I see manta rays in Kona?
Many operators offer guided night dives or snorkel tours specifically to view manta rays, which are commonly sighted at designated feeding sites off the Kona coast.
Does Kona still host the Ironman World Championship?
Kona hosted the Ironman World Championship for many years, but the event's location has changed in recent seasons. Verify the current venue and schedule before planning a trip.
What should I pack for outdoor activities in Kona?
Bring reef-safe sunscreen, a hat, reusable water bottle, sturdy shoes for hikes, and a light rain layer. If you plan to dive or take specialized tours, confirm gear requirements with operators.

News about Kona Hawaii Activities

Top 10 things to do on Big Island for Oct. 24-30: Frightful fun featured at events around the island - Big Island Now [Visit Site | Read More]

Kona Week 2025: Schedule of Events for the IRONMAN World Championship - Slowtwitch News [Visit Site | Read More]

IRONMAN Kona 2025: Complete schedule and activities for the week - Triatlón Noticias [Visit Site | Read More]

14 of Our Favorite Things to Do on Hawaiʻi Island - Hawaii Magazine [Visit Site | Read More]

4th of July events on Hawaii Island - Spectrum News [Visit Site | Read More]

Top 10 things to do on Big Island for Oct. 10-16: Pumpkin patches, Truck Fest, keiki hula, heavy metal and more - Big Island Now [Visit Site | Read More]

Top 10 things to do on Big Island for Aug. 29-Sept. 4: Live music, cat videos, lei pāpale, stargazing, sports greats and more - Big Island Now [Visit Site | Read More]