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PACERTRIP CITY EDITIONJP / RACE GUIDE

21st Setagaya 246 Half Marathon

The city you want to run becomes your next trip.

JPNov 8, 202621.1km

そらみみ · CC BY-SA 4.0

Race date in 31 days: Nov 8, 2026 Sun
City · Distance: Setagaya · 21.1km
Entry fee: ¥10,000From the 2025 edition
Status: ClosedWed, July 1, 2026 ~ Fri, July 31, 2026See how to enter ↗

Official website ↗D-day as of Oct 8, 2026

About the race Runner stories How to enter Course Race Prep Travel

Why you dream of this race

THE DREAM

ABOUT THE RACE

A day you'll remember,
long past the finish line.

A half marathon along National Route 246 and the Tama River riverside paths in Tokyo’s Setagaya district.

Starting and finishing at Komazawa Olympic Park, it is a lottery-based event capped at 2,000 runners.

A select-field half marathon in western Tokyo named after the national route, now entering its 21st edition.

The road to your own record

Picture the course in advance
and find the pace that fits you.

When the city cheers

Streets lined with cheers, runners all around.
You'll be part of that scene.

The trip that follows the run

Take it slow with the finish still in you,
and meet the city all over again.

Stories from those who ran it first.

From the joy of finishing to the tough moments — read what runners wrote themselves.

Race reports: 2

koaitameiRan in 2025 · Finish time 1:11:59

“Once I warmed up, I felt I could keep up with them, but I kept my distance just in case.”

At the Setagaya 246 half marathon, the runner controlled the pace on early descents in cold rain to save strength for later climbs. A final kick brought a chip time of 1 hour, 11 minutes, and 59 seconds.

Quoted from the original · translated

Original quote

体が暖まってきて付ける気もしましたが念のため切り離します。

Read the original on 片手間の熱意

RupinRan in 2025 · Finish time 1:28:35

“It was cold and rainy.”

At the Setagaya 246 half marathon, the runner moved through the early congestion and followed the 90-minute pacer. After a steep late climb, the runner accelerated over the final 2km to finish in 1 hour, 28 minutes, and 35 seconds.

Quoted from the original · translated

Original quote

天候は寒い雨に降られるコンディション。

Read the original on Rupinのラン(とロードバイク)のブログ

We translated a short line from each public race report and summarized the experience. Finish times are as stated by the author, and past editions may differ from this year's weather and operations.

See it on video,
feel it through their stories.

Preview the course and read what runners who went before you wrote.

Finisher vlog

Setagaya Jiro · Finisher vlog

View on YouTube

This may be from a past edition. Check the organizer for this year's course and operations.

The way in that fits you

YOUR ENTRY

How to reach the start line —
start with what fits you.

Here are the ways to enter and what each requires.
Check the organizer's page for whether entries are open.

From the 2025 edition

Registration history

The 2026 race opened entry on Wed, July 1, 2026

We'll fill this in once the official entry rules are out.

Official race website Entry options

From the start line to the finish

RACE WEEK

The 21.1km I'll run

Know the course and time limit, and race day comes into focus.

Runners start · local timeFrom 08:30

Time limit2h10m

Event	Start	Time limit
Half21.0975km	08:30	2h10m

START

Komazawa Olympic Park Athletics Stadium

Start · Google Maps

Course starts and finishes at Komazawa Olympic Park General Sports Ground,

passing along Komazawa Park Street and taking National Route 246 (Koshu Kaido) toward Futako-Tamagawa.

It then follows Tamagawa-zutsumi Street across Yoshizawa Bridge, circling the Sagimura area and the border region of Setagaya Ward and Komae City.

After that, it passes the Tamagawa Cycling course, the Futako-Tamagawa Green Space sports facility, and Hyogo Bridge,

then returns via Tamagawa-zutsumi Street, Meguro Street, and Komahachi Street to Komazawa Olympic Park General Sports Ground.

Field size: 2,000 runners (lottery)
Organizer: 世田谷246ハーフマラソン実行委員会
Typical race-season temperature: around 10°C (51°F): Short sleeves or light long sleeves + arm warmers

Participant benefits

Bag drop

To the start line,
step by step.

Pick up your bib, check your wave.
So on race morning, you can just run.

From the 2025 edition

Pick up your bib at the expo

Bib is not mailed in advance.
You exchange it for your race bib at the venue on race day and receive it together with the commemorative T-shirt.
You must bring the race bib mailed to you approximately two weeks before the race, and baggage must be left at the designated storage area corresponding to the last two digits of bib.

Komazawa Olympic Park Athletics Stadium Registration Desk

Race Day

Google Maps

Stations & transport near the venue

Getting to the start

Tokyu Den-en-toshi Line · Tokyo Metro Hanzomon Line, Komazawa-Daigaku Station

Start/finish at Komazawa Olympic Park Athletics Stadium (駒沢オリンピック公園陸上競技場), Setagaya, Tokyo.

Komazawa-Daigaku Station is the nearest station, roughly 15-20 min walk to the park.

Getting to the finish

Tokyu Den-en-toshi Line · Tokyo Metro Hanzomon Line, Komazawa-Daigaku Station

Same venue as start (stadium loop course along Route 246 / Tamazutsumi-dori).

More details

None needed;

well served by walk from Komazawa-Daigaku Station, and the park is also reachable from Sangen-Jaya or Yoga stations by bus.

Source · checked Aug 22, 2026

READY TO RUN

From race morning to after the finish.

Your start time, fuel and bag drop.
Know them ahead and the run feels easier.

Half marathon starts at 8:30 AM, with capacity of 2,000 selected by lottery.

For the 2026 race, lottery applications were accepted from July 1 to July 31.

Times are local to Setagaya. Check the latest official information before the race.

A trip built around the race

STAY A LITTLE

MAKE IT A RUNTRIP

The race is one day,
the trip can be longer.

From a hotel that makes race morning easy,
to the meals and views you'll enjoy with the medal on.

コートハウス三茶

Accommodation · 1.1km

9.8/10(10)

View on Booking.com

Tokyo Aroma Massage Spa Koro, Ikejiri-Ohashi Branch

₩124,949

21st Setagaya 246 Half Marathon

About 21st Setagaya 246 Half Marathon — what makes it special

A day you'll remember,long past the finish line.

The road to your own record

When the city cheers

The trip that follows the run