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 42nd UP RUN Sai-ko Marathon

第42回UP RUN彩湖マラソン

Date

November 8, 2025

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-km 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

Two water stations per 5-km lap. Water, sports drinks, bananas, chocolate, and other refreshments are available.

Pacers

Finisher rewards

Commemorative gifts 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 available (500 yen for valuables only). Changing tents available.

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

AI summary

RELAY

Team format & legs

In the 20-km relay, each team consists of 2 to 4 members. They run a 5-km course, passing the baton to each other, for a total of 4 laps (20 km). The running order and number of laps are up to the team.

Team composition rules

Teams consist of 2 to 4 members. Anyone is eligible to participate.

Solo / small team

Not allowed

Course format

Looped (relay-style)

Venue & setup

Changing tents are available. There is a luggage storage area (valuables can be stored for 500 yen). There are two water stations, and water and food are provided.

Time limit

There is no time limit for the 20-km relay. The entire event is 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

Bibs are handed out at the venue on race day during check-in. There is no advance postal delivery of bibs.

Notes

Bibs are only available at the race-day reception desk, making remote/overseas participation impractical. All official communications are sent by email in Japanese.

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

Runner Reviews

REVIEWS

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No runner reviews for this race yet.

Overall Score

3.1

/ 5.0 · 6-axis avg

Official site →

Overseas entry not available