⏵ Course guide · Hilo's Big Island destination marathon
The Big Island International Marathon runs two out-and-backs along Hilo's old coast, starting and finishing at the Hilo Hawaiian Hotel, now in its 30th year. I will walk you through the course and cutoff first, then give you a pacing plan built for Hilo's warm, humid conditions, plus a short fueling plan since this is marathon distance, not an ultra.
These facts come from the official Big Island International Marathon site and its RunSignup event listing. Confirm current course maps and pricing before you commit.
Both the start and finish sit at the Hilo Hawaiian Hotel on Banyan Drive, with the marathon running two out-and-back segments along the old coast of the Big Island.
The marathon's own course description calls it "two out and backs starting at the Hilo Hawaiian and finishing back at the same hotel," which means you will see the finish area twice before you actually cross it. Aid stations arrive roughly every 2 miles with water and Gatorade, with Coke and gels added in the later stretches.
The course-info page notes a temporary reroute in years when nearby Singing Bridge construction affects the route. Check the current-year course maps on bigislandmarathon.com in the weeks before race day so you know exactly what you are running.
A 6:00 AM start helps you beat the hottest part of a Hilo day, but Big Island humidity is real even in the early morning hours.
Build your goal pace from recent training rather than a round number, then check it against Hilo's typical warm, humid conditions in the days before the race. A pace that felt right in cooler training weather can be too aggressive for a tropical morning, even one that starts before sunrise.
The course closes at 1:00 PM, 7 hours after the 6:00 AM marathon start. That is a generous window for most finish-time goals, but pace with it in mind if you are running toward the back of the field, since the timer stops at 1:00 PM regardless of where you are on course.
⏵ Free tools to pace this course
With aid stations roughly every 2 miles offering water, Gatorade, and later Coke and gels, your own fueling plan can stay simple.
Work out your carbohydrate needs and gel timing before race day, then plan to take in more fluid than a cooler-weather marathon would demand, given Hilo's typical humidity. The course's frequent aid stations make it easy to top off, so lean on them rather than overloading what you carry yourself.
⏵ Build your fueling plan
Work out exactly how many gels to carry and when to take them with the free gels per race calculator. Browse the rest of the free running tools at the tools hub.
⏵ Train for it with Summit Line
Get a race-day plan built around YOUR fitness, this coastal course, and Hilo's warm, humid conditions. Summit Line reads your real training, builds a plan for even, disciplined pacing, and rehearses your fueling so race day is something you execute, not guess at.
The marathon runs as two out-and-backs, both starting and finishing at the Hilo Hawaiian Hotel on Banyan Drive, following the old coast of the Big Island. Neither official source publishes a full elevation profile, but the course does run through multiple parks and along Highway 19 with ocean views for much of the route. A recent nearby bridge construction project has required a temporary reroute in some years, so check the current course maps on bigislandmarathon.com before race week.
The course opens at 6:00 AM and closes at 1:00 PM, a 7-hour window from the marathon's start. Runners still on course when it closes can still receive a finisher medal, but the official timer stops at 1:00 PM, so your official result reflects that cutoff.
Neither official source publishes an elevation profile, so treat this as a course to research further before assuming it is flat just because it runs along the coast. What is confirmed is a 7-hour time window and Hilo's typically warm, humid conditions even at a 6 AM start, both real factors on top of whatever elevation the route holds.
The marathon starts at 6:00 AM, with the other distances staggered afterward: half marathon at 6:15 AM, 5K at 6:30 AM, 10K at 7:00 AM, and the 2-mile fun walk at 7:05 AM. All times are local Hawaii time.
Entry fees are $120 for the marathon, $95 for the half marathon, $55 for the 10K, $30 for the 5K, and $25 for the 2-mile walk, with prices increasing after July 31, 2026. Registration is handled through RunSignup.
With 30 years of history and a start/finish right at the Hilo Hawaiian Hotel on Banyan Drive, this is a genuine Big Island destination option for runners who want Hawaii scenery without the size and cost of the bigger Oahu races. The 7-hour cutoff is generous enough for most finish-time goals, and the point-blank coastal setting is worth the trip on its own.
Link this guide
Race directors and clubs: link or embed this guide anywhere. It stays current.
<a href="https://runsummitline.com/guides/big-island-international-marathon">The Big Island International Marathon course guide</a><iframe src="https://runsummitline.com/embed/race/big-island-international-marathon" style="width:100%;max-width:420px;height:180px;border:0;" loading="lazy" title="Big Island International Marathon course guide by Summit Line"></iframe>This guide is independent and for planning only. The course details, dates, cutoffs, and pricing come from public sources and can change year to year, so confirm the current specifics with the official race before you register or run. The fueling and pacing advice is general and not medical advice.
The timeline
Get the week-by-week countdown for this race: when to build, when to peak, when to taper.
One email with the timeline, plus training notes for this race. Unsubscribe any time.