Day 1
6.2 Mile / 10k Swim
The 6.2-mile (10-kilometer) open ocean course begins at the water’s edge on the southeast side of the Kailua Pier, and ends on the beach at the north side of Keauhou Bay. Start time is a few minutes before sunrise, scheduled promptly for 6:30 a.m.
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The 6.2-mile (10-kilometer) open ocean course begins at the water’s edge on the southeast side of the Kailua Pier, and ends on the beach at the north side of Keauhou Bay. Start time is a few minutes before sunrise, scheduled promptly for 6:30 a.m. With the water temperature in the mid to high 70s, hypothermia should not become a problem; nevertheless, most participants will wear wetsuits to protect against that possibility, as well as the hazards of jellyfish or man o’ war, whose stings may cause severe discomfort. At the starting signal, swimmers will start together (self-seeding is recommended), rendezvous with their waiting swim escorts (who are allowed to provide the swimmer with food and water), and head south along the lava shoreline of the historic Kona Coast. Swimmers not reaching the swim finish in five and 1/2 hours may be permitted to continue, but must realize that, in order to reach the finish line by the 12 hour cutoff time, it will be very difficult. Just over a mile after the start, swimmers will pass Puapua’a Point, leaving the relative shelter of the Kailua Bay. Here the unpredictable elements of the open ocean-swells, currents, perhaps some light wind and surface chop-may become more noticeable. Kamoa Point, a favorite surfing spot, is located near the halfway point, and at mile 4, White Sands Beach may (or may not) appear on the shore (it is sometimes known as Magic Sands or Disappearing Sands because, during high surf, the entire beach can be moved offshore in just a few hours). Well into Mile 5, swimmers will pass Kahalu’u Bay with its blue-roofed church and unique lava-rock breakwater. If the past is any indication, strong northerly currents are likely in this area and will probably remain strong until the entrance to Keauhou Bay. The final mile, paralleling black lava cliffs, will probably be the toughest: currents and surf in the area are unpredictable, and the approach to the bay itself is ringed with large lava outcroppings and coral heads. However, the straight-line course and buoys will keep swimmers far enough offshore so that avoiding these obstacles should not be difficult. After a left turn around the orange buoy at the entrance to the bay, it should be a relatively calm quarter mile to the final buoy and the finish line. Since the exit is on a rocky beach, teams should be prepared to have footwear available for their participants to walk in comfortably to the transition.
CAUTION: The bottom and shoreline areas along the coast often have spiny black sea urchins (wana) clinging to them. Since stepping on one of these may cause painful and bothersome injury that may even prevent further participation, caution should be exercised when in shallow water.
SUGGESTION: In previous years, a straight-line course from Kailua Bay to the first turn buoy at the entrance to Keauhou Bay has proven to be not only the shortest course, but often a faster one as well. Once that turn buoy is reached, set a diagonal course to the final buoy and keep to the right of all buoys and away from the rocky shoreline. However, since conditions are unpredictable, following the direction of the swim escort may be more advisable.
Day 1
Bike 90 Miles
After exiting the water at Keauhou Bay, athletes will transition onto their bikes for the 90-mile ride to Kilauea Military Camp (KMC) via Route 11. This bike leg begins with a leg-busting 10km climb just to get things started. You then ride along Hwy 11 with rolling hills to the town of Naalehu. After going through town, one begins a very fast descent (where one might see whales breeching this time of year) and, after the fast downhill, one starts the series of climbs to Volcano National Park.
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After exiting the water at Keauhou Bay, athletes will transition onto their bikes for the 90-mile ride to Kilauea Military Camp (KMC) via Route 11. This bike leg begins with a leg-busting 10km climb just to get things started. You then ride along Hwy 11 with rolling hills to the town of Naalehu. After going through town, one begins a very fast descent (where one might see whales breeching this time of year) and, after the fast downhill, one starts the series of climbs to Volcano National Park. Athletes are likely to experience every possible type of weather, from scorching heat, oppressive humidity, blasting winds, rain, fog, and climbs that never seem to end, before reaching the Day 1 Finish Line at KMC. Vertical climbs total 7,948 feet.
The Day 1 Bike Finish is within Kilauea Military Camp (KMC), turning off Hwy 11 into the park’s back gate. Athletes stay in park facilities, or in Volcano Village, a short drive away. The Day 2 start is on the highway just across from the KMC back gate, where athletes and their crews will assemble for a mass-start to begin a 17+-mile descent to Keaau, then settle in for the long, arduous climbing route to the finish at Kamehameha Park just east of Kapaau town. The morning start of Day 2 is usually misty or light rain, with fog, and it quite chilly during the descent to Keaau. Rain gear or warm cycling gear is advised!
Day 2
Bike 173 Miles
Day 2 takes athletes on a challenging 173mile (276 km) cycling journey across Hawaiʻi Island, beginning at Kīlauea Military Camp in Volcanoes National Park and finishing at Kamehameha Park in Kapaʻau. The course features a fast descent from the volcano, tropical coastal roads, rolling terrain along the Hāmākua Coast, demanding climbs toward Waimea, and a final stretch through North Kohala where wind and fatigue can become significant challenges.
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Day 2 takes athletes on a challenging journey around Hawaiʻi Island, beginning at Kīlauea Military Camp in Hawaiʻi Volcanoes National Park and finishing at Kamehameha Park in Kapaʻau.
The day begins with a long descent from approximately 4,000 feet toward Keaʻau before traveling through the lush Puna District, passing Pāhoa and Kalapana. Athletes then head north through Hilo and along the scenic Hāmākua Coast, where rolling hills and repeated elevation changes begin to accumulate.
One of the day’s biggest challenges comes later in the ride with the sustained climb toward Waimea. From there, the course descends toward Kawaihae before following the exposed Kohala coastline through Hawi to the finish in Kapaʻau.
Athletes should anticipate changing weather conditions, including cool temperatures near Volcano, tropical humidity around Hilo, possible rain, and strong winds along the Kohala coast.
Pacing and nutrition are critical. The fast opening miles can create a false sense of ease, while the climbing and wind exposure later in the day can punish athletes who expend too much energy early.
With a 12-hour stage time limit and a 52.4-mile double marathon awaiting on Day 3, athletes should prioritize consistent effort, reliable fueling, and energy conservation.
Support crews must follow the officially designated crew routes and race instructions rather than assuming the athlete cycling route is approved for vehicles.
Day 3
Run 52.2 Miles
Day 3 is the final challenge of the Ultraman World Championships: a 52.2-mile double marathon from Hawi to Kailua-Kona. Athletes descend along the Kohala Coast before facing the exposed, rolling terrain of the Queen Kaʻahumanu Highway, finishing at Old Airport Park. Heat, wind, and accumulated fatigue make this a demanding final stage.
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Day 3 brings athletes to the final stage of the Ultraman World Championships: a 52.4-mile double marathon beginning in Hawi and finishing at Old Airport Park, Pavilion 1, in Kailua-Kona.
The run begins at 6:00 a.m. near Sacred Heart Catholic Church in Hawi. Athletes initially follow Highway 270, descending approximately 18 miles toward Kawaihae before turning south onto the Queen Kaʻahumanu Highway (Route 19).
The early downhill miles may feel relatively comfortable, but athletes should avoid aggressive pacing. The extended descent can place considerable stress on the quadriceps, especially after two demanding days of swimming and cycling.
Beyond Kawaihae, the course transitions into the exposed, rolling terrain of the Queen K Highway. Athletes will encounter long stretches of volcanic lava fields, limited shade, and potentially challenging heat and wind conditions.
The final miles lead toward Kailua-Kona and the finish at Old Airport Park, where athletes complete their 320-mile Ultraman journey.
With a strict 12-hour time limit, athletes must balance sustainable pacing, consistent fueling, hydration, and temperature management throughout the day. Crews play an essential role in supporting their athletes but must follow all designated support and traffic regulations.
Important: The first mile is a no-feed zone, and crew vehicles are not permitted to stop to provide assistance during that section.
Day 3 is a test of endurance, patience, and determination. Athletes who manage their effort early and remain consistent through the exposed coastal miles give themselves the best opportunity to reach the finish line.