Race Day: Timeline, Last-Minute Decisions and Plan B

The Days Before: Mandatory Checks

This race has more unknowns than usual, and you need to close them out before the start. Three things to verify as soon as the athlete guide comes out, because current sources don't include them:

• Overall cutoff time and intermediate cutoffs: not available in the sources consulted.
• Shuttle system and check-in times for the point-to-point setup (swim in Hakodate, T1 in Hokuto, T2 and finish in Kikonai).
• Swim start time.

In the days before the race, set aside half a day for recon: the start beach in Hakodate Bay, T1 in Hokuto, and if you can, a trip to Kikonai to see the finish and the run circuit. With three locations involved, winging it on race morning is not an option.

The Wetsuit Call: Wait for the Official Announcement

Sources openly disagree here, and you need to know it. The official page lists water at around 21 °C; an independent analysis reports typical race-week values around 25.2 °C and flags races as often non-wetsuit. The difference is no small detail: it changes gear, swim pacing and heat management.

Operational plan: bring both the wetsuit and the swimskin. Swim in training with both, because a full-distance 3,856 m swim without a wetsuit is a different race for weak floaters. You make the call when the organizers announce the official temperature — typically that same morning. No drama either way: you've rehearsed both scenarios.

Race Morning: Real Ocean, Beach Transition

The swim is two laps in Hakodate Bay, in the waters of the Tsugaru Strait — a strait famous for crossings, so this is real ocean, not a lagoon. Transition is right on the beach. In the weeks before, train open-water starts in chop, bilateral breathing and sighting: the pool isn't enough. On race morning, if the rules allow it, do a short warm-up in the water to gauge the actual temperature and conditions.

The Classic Mistakes on This Course

1. Believing the "flat" tag on the bike. Stated elevation gain is 2,956 m. Anyone who starts with flat-course pacing blows up in the second half. The course analysis advice is clear: start controlled and build speed in the back half of the leg.

2. Ignoring the wind. Typical 18 km/h from the NE on an exposed expressway. Pace by watts, not speed: if you chase speed into a headwind, you torch the marathon.

3. Messing up the bags in a point-to-point race. With T1 in Hokuto and T2 in Kikonai, an item in the wrong bag is gone for the day. Run through your bag checklist twice, the night before, when you're rested.

4. Discovering Aquarius mid-race. Run aid stations serve Aquarius, not the Western brands. If you haven't tested it, run with your own gels and use the course only for water and Coke.

5. Underestimating laps 2 and 3 of the marathon. The circuit is flat but repetitive. Prepare your mental strategy in advance: segments, tasks, aid stations as mini checkpoints.

Plan B, by Scenario

• Non-wetsuit swim announced: swimskin, more conservative pace for the first 400 m, accept 3-5 minutes extra on your plan.
• Stronger wind than expected on the bike: cut 3-5% off your target watts and protect the run. On this course the flat marathon rewards whoever arrives with legs.
• Hot day (26-27 °C on the run): water on your head at every aid station, slow the first lap, Coke from lap three.
• Mechanical issue: with 175 km on a closed expressway, check the athlete guide for where the support points are. Carry your full repair kit anyway.

Race Night

The finish is 3 minutes from Kikonai station: arrange your return to Hakodate/Yunokawa from home, for you and anyone traveling with you. Check the athlete guide for where and when to pick up bikes and bags: in a point-to-point race, even the post-race needs planning.