HalfRuns
Hawaii Kai Ultra Run - Kalama Valley 2026

Hawaii Kai Ultra Run - Kalama Valley 2026

Hawaii Kai's Kalama Valley loop stacks a half marathon through 100 miles on a 3.34-mile circuit.

Race Date

Dec 19, 2026

Location

Honolulu, HI

Quick facts

Date
Saturday, December 19, 2026
Location
Honolulu, Hawaii
Distance
Half marathon (13.1 mi) + 30K, 26.2 Miles, 50K, 50 Miles, 100K, 100 Miles
Course
Loop Course
Terrain
Road
USATF certified
Not listed

Highlights

Course

Well Marked

The Experience

Kalama Valley Park sits at the edge of Hawaii Kai, on Oahu's southeast coast, near Sandy Beach. The race begins and finishes in the middle of a loop: runners head mauka — inland — up Kealahou Street to a turnaround, then swing makai, back toward the beach, before returning to the start/finish tent.

Because it's a 3.34-mile circuit that repeats, one course serves every ambition — half marathoners cover a few laps while ultrarunners keep going for 50 miles, 100K, even 100 miles. Turnaround points are marked with cones and signs, and set wave start times let runners pick their company on the road.

The date lands the weekend after the Honolulu Marathon, an easy add-on for anyone already on the island, and the event counts as a 50 States Marathon Club qualifier. Expect warm, humid island air in the high 60s to upper 70s and a steady breeze off the water. It's a low-frills, community-rooted day built around an honest loop and the Pacific just past the turnaround.

Race-provided description

The 2026 Hawaii Kai Ultra Run will be held on December 19 & 20, 2026 (Saturday & Sunday); the weekend after the Honolulu Marathon (12/13/2026).   The CHECK-IN and START/FINISH is at Kalama Valley Park located at 555 Kealahou St. in Hawaii Kai near Sandy Beach.    Street PARKING where available along Kealahou St.   BUS ROUTE #23 stops at Bus Stop ID #288 across from the Check-In tent at Kealahou St. and Mokuhano St. For more information, please visit the The Bus website at:  https://www.thebus.org   Choose your distance:  Half Marathon, 30K, Marathon, 50K, 50 Miles, 100K or 100 Miles. The Hawaii Kai Ultra Run KV route is a 3.34-mile loop (3 loops is 10 miles). The Start/Finish is in the middle of the loop. From the start, runners head mauka on Kealahou St. until the turnaround at Kealahou St. and Ipuai St. Runners then head makai on Kealahou St. towards Sandy Beach and turnaround before Kalaniana'ole Hwy to return back towards the Start/Finish tent to complete a loop. Turnaround points will be clearly marked with cones and signs.    COURSE MAP:  https://goo.gl/maps/YA6HRho5ruhhY8G78   Choose your START TIME:  If you enjoy running with your peers, we are offering Corral selections with set wave start times*. The following wave selections may be made when registering:   Saturday, 12/19/2026 - 6am Wave Saturday, 12/19/2026 - 7pm Wave Sunday, 12/20/2026 - 6am Wave   *Note:  1) This event is a 50 States Marathon Club qualifier and will count towards your totals.  2) Completing a 50-mile, 100K or 100-mile HKUR run will qualify you to enter any HURT race. You must use a "wave start" option to certify timing for either of these races.

Or you can simply show up and sign in with your own start time at the start/finish tent for all distances. Start Saturday (3AM or after) or Sunday (most people start between 3AM and 7AM on Saturday morning.) You must start before noon on Saturday and remain on the course to be eligible for no cutoff time. ALL DISTANCES MUST BE STARTED BY NOON ON SUNDAY, 12/20/2026 UNLESS ARRANGEMENTS HAVE BEEN MADE WITH THE RACE DIRECTOR IN ADVANCE.  IMPORTANT:  If you are planning to arrive early in the morning (before sunrise), please be quiet. The route is in a residential neighborhood, and many residents are still sleeping. Mahalo in advance!   ** PLEASE NOTE THE RACE PRICE INCREASES BY $5.00 ON 12/1/2026 ** Other Information: This is a Show Up and Sign In event with no packet pick up.   HYDRATION:  Water, ice and snacks will also be provided at the Start/Finish tent. Please consider bringing a reusable water receptacle to reduce waste / litter. HKUR is committed to reducing it's impact on the environment so this will be a "cupless" event. You may purchase an HRP reusable cup at time of registration or on race day.   RESTROOMS: Public restrooms are available 24 hours at the Start/Finish tent.   CERTIFICATES/SHIRTS:   Certificates, medals, and stickers will be awarded to all registered finishers.  HKUR 2026 Finisher shirts will be available for purchase for $25 at time of registration by 11/18/2026. A LIMITED SUPPLY OF HKUR SHIRTS MAY BE AVAILABLE FOR PURCHASE ON RACE DAY (not guaranteed). NO SHOWS will forfeit all Finisher branded materials.   Check out the HKUR Store for other HKUR merchandise available for purchase in advance and on race day: https://runsignup.com/Race/Store/HI/Honolulu/HawaiiKaiUltraRunKalamaValley. IF YOU DO NOT COMPLETE YOUR REGISTERED DISTANCE, please let us know so we may modify your certificate to the highest level of completion. This run is not pass/fail - you will be awarded for your effort! Follow us on Instagram @hawaii.kai.ultra.run & @hawaiirunningproject Special Hotel Room Rates for HKUR Runners! Need Accommodations while in Hawaii? Our longtime partner Queen Kapiolani Hotel has a special HKUR participant rate available for guests coming from abroad to the run. Please email us @ hawaiirunningproject@gmail.com to obtain the partner code for your hotel stay.

Logistics

Race Day

Saturday, December 19, 2026

Start Time

3:00 AM

Start Location

555 Kealahou St, Honolulu, HI, 96825

Directions

Course Info

Course Type

Loop Course

Terrain

road

Surface

Paved

Difficulty

Ultra-Flat

Net Drop/km

0 m (Flat)

Separation

0.0%

Also Offers

30K26.2 Miles50K50 Miles100K100 Miles

Quality Score

Methodology
Heritage0/20

first year

Size0/15

no finisher counts yet

Momentum3/5

small race — neutral

Loyalty0/20

needs a few years of results

Course & details3/15

5 timing sources

National draw0/10

no finisher data yet

Front-pack speed0/5

no winner time yet

Weather0/10

typical high 78°F

Race Day Weather

5-year historical avg

Start (Low)

69°

Afternoon (High)

78°

Warm — hydration strategy is key, start conservatively

0.1"

Precipitation

14 mph

Wind

79%

Humidity

Frequently asked

When is the Hawaii Kai Ultra Run - Kalama Valley 2026?

The Hawaii Kai Ultra Run - Kalama Valley 2026 is held on Saturday, December 19, 2026, starting at 3:00 AM.

Where does the Hawaii Kai Ultra Run - Kalama Valley 2026 take place?

It takes place in Honolulu, Hawaii.

What distances does the Hawaii Kai Ultra Run - Kalama Valley 2026 offer?

The half marathon (13.1 miles), plus 30K, 26.2 Miles, 50K, 50 Miles, 100K, 100 Miles.

Is the Hawaii Kai Ultra Run - Kalama Valley 2026 course flat and good for a PR?

The Hawaii Kai Ultra Run - Kalama Valley 2026 is a ultra-flat, loop course course.

HalfRuns editorial — independent, no paid placement.

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