This race has finished.

The next edition is undecided. Please check the official site.

Status updated: June 18, 2026

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Saitama

Full Marathon

The 43rd UP RUN Sai-ko Marathon

第43回UP RUN彩湖マラソン

Date

January 31, 2026

Location

Saitama

Venue

埼玉県戸田市美女木8-5-14

Distance

Full Marathon

Event	Entry Fee	Time Limit	Capacity
Full Marathon	¥5,000	5h	—
30km	¥4,500	5h	—
Half Marathon	—	3h	—
10km	¥3,500	—	—
5km	¥3,000	—	—
Family (Parent & Child)	—	—	500 runners

Finish Rate

—

Last updatedJune 18, 2026·14 days agoOfficial site checkedJune 18, 2026

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AI summary

COURSE

Course profile

Flat (PB-friendly)A flat, easy-to-run course. A 5-kilometer loop course.

Cutoffs & time limit

Full Marathon: 5.5 hours; 30 km: 5 hours; Half Marathon: 3 hours; 10 km, 5 km, Parent-Child, and 20 km Relay: None

Water stations

There are two water stations every 5 km. Water, sports drinks, bananas, chocolate, and other refreshments are available.

Pacers

Finisher rewards

Commemorative prizes will be awarded to the top three finishers in each event. Certificates of completion will be issued on the day of the event. Original merchandise is available through participation rewards and a points card program.

Changing & baggage

Luggage storage is available (500 yen for valuables). A tent for changing clothes is provided.

Summary for guidance. Always confirm details on the official site. Last verified: June 22, 2026

AI summary

RELAY

Team format & legs

The 20-km relay consists of teams of 2 to 4 people who run a 5-km course, passing the baton to each other, for a total of 4 laps. The running order and number of laps are up to the team.

Team composition rules

Teams of 2–4 people; open to anyone

Solo / small team

Not allowed

Course format

Looped (relay-style)

Venue & setup

Changing tents available, luggage storage available, two water stations, and completion certificates issued on the day of the event

Time limit

20 km Relay: No time limit; event scheduled to end at 4:00 p.m.

Summary for guidance. Always confirm team rules on the official site. Last verified: June 22, 2026

Access

ACCESS

Note: the map shows the approximate area. Check the official site for the exact start/venue.

Score

RATINGSAuto-calculated from market research, official data, and online voicesSome scores unavailable（3/6）

Course Appeal

コースの魅力

N/A

Organization & Support

運営・サポート

N/A

Finishability

完走しやすさ

1.4

Atmosphere

大会の盛り上がり

N/A

Access

アクセス

3.0

Value for Money

コスパ

5.0

Entering from overseas

INBOUND

Overseas entry not available

Bib pickup

Bib pickup is on race day at the venue reception. No advance postal delivery of bibs or entry notices — confirmation is sent by email only.

Notes

Bib collection is in person on race day only, making this race impractical for overseas runners who cannot attend the venue directly.

Summary for guidance. Always confirm details on the official site. Last verified: June 22, 2026

Runner Reviews

REVIEWS

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Overall Score

3.1

/ 5.0 · 6-axis avg

Official site →

Overseas entry not available