※Those who plan to attend the 2025 Deaflympics as competitor, coach or team official must refrain from attending this event.

8th Geo Park Izu-Oshima Orienteering EventBulletin 3
WelcomeThank you for participating in the 8th Geo Park Izu-Oshima Orienteering Event. We are able to host this event again thanks to the support fromthe local community and orienteers. We sincerely express our gratitude to everyone.
Izu-Oshima Ura Sabaku・Okuyama Sabaku is a one-of-a-kind terrain in Japan, created by the lava sprung from the volcanic eruptions. I hopeeveryone will be able to experience this unique terrain.
Izu Oshima is a part of the Fuji–Hakone-Izu National Park, and a large part of the terrain is designated as special protection zones or specialzones. Please take care of the environment for sustainable use of the terrain.
Ryo Ikuta, Event Director

Event Overview
Date｜Dec. 17, 2023 (Sun)

Arena

Arena

｜Oshima Hot Spa Hotel（3-5, Kitsunba, Senzu, Oshimamachi, Tokyo, 100-0103）

Event office
Please pick up rental E-cards and backup patches at the event office.

Terrain｜Izu-Oshima Ura Sabaku・Okuyama Sabaku

Those with insufficient payment or other issues must visit the event

Organizer｜ES Kanto Club

office as well. Losses of rental E-cards is subject to compensation.

Event Director

Ryo Ikuta

Compass rental is free of charge with JPY 3,000 deposit. Deposit

Event Secretary

Mana Nakamura

will be returned upon return of the compass, but cannot be

Technical Director Kousuke Tachibana
Course Setter
Partner

returned in the event of losses or damage. Please use with care.

Tatsuya Fujisawa｜Oshima Tourism Association

Breakfast buffet and Lunch (bento)
Pre-ordered breakfast is available in buffet-style at the hotel
restaurant. Please give your name at the restaurant door.

Main Sponsor ｜Oshima-machi

Pre-ordered lunch bento can be picked up at the event office afterSponsors

your race. Please come pick up by group. We appreciate your｜Tokai Kisen Co., Ltd.
Kabushikigaisha Tubaki

cooperation.
Both meals are only available to those who have pre-ordered.
We will also provide complimentary ara-jiru (fish bone soup).

Time Table
Arena open

6:00

Map sales
All-control maps (JPY 500) and course maps (JPY 400) will be sold at

Breakfast (pre-order)

6:30 ~ 8:30

the event office. *Cash only

First start

9:00

Start close

10:15

Finish close

12:35

Onsen
The onsen is available after the race at JPY 800. Please purchase

Bus to port

12:30 ~ 14:00 (TBC)

tickets at the event office. *Cash only

Event Cancellation

Kid’s space (nursery)
We will set up a kid’s space (nursery) inside the hotel.

In the event of extremely bad weather such as typhoons, heavy windor heavy fogs, we will announce decisions for cancellation of theevent around 18:00 on Dec. 16 on our official HP(https://eskantoc.com/izuoshima2023/) and X account（@eskantoc）.
If the weather is changeable, we will announce our preliminary
decision on Dec16 and our final decision by 7:00 Dec. 17.

Notes
・Please take off your orienteering shoes inside the hotel
・Shoes of any kind are prohibited at the indoor arena
・Taking photos or videos inside the terrain are prohibited・Please be considerate to hotel guests
・Please use the outside seating area as the indoor space is very
limited. Tents and tarps may be set up.
・The event is under an accident insurance. Please contact theorganizer for any race-related injuries.
・Lost & found will be available until Jan 20, 2023. Items unclaimedby the deadline will be either disposed or be collected as theorganizer’s equipment.

Arena layout

Restaurant
Oshima Spa Hotel（For breakfast）

Kid’sspace

Indoor arena

Onsen(Men’s changing space←Hotel rooms

Shopand baggage space)(No shoes )HotelEntrance(No shoes)
WC

KitchenEventOffice

Bus stop

Outdoor Arena※Tents and tarps allowedAccessArrival：Port → ArenaPre-boarding screening

Transport to arena for participants arriving on the Dec. 17 AM large

Participants are subject to pre-boarding screening on theirpassenger ship
Organized buses to the arena will be connecting to the following ship.

registration of the bus questionnaire. Please show your answer

Duration is approximately 20 mins.

Those who have not answered the questionnaire may board if

Dept. Tokyo

Dept. Yokohama

Arr. Oshima

screenshots/form to the organizer before boarding.
there are any empty seats.

Large passenger ship
Dec 16

code 3000

22:00

Dec 16

23:306:00

Bus fares
Bus fare is JPY 660/one-way. Please pay in cash. Please note thetiming of payment varies between arrival and departure.

For those staying at Motomachi Port on Dec16
We will provide transport to the arena on Dec 17.
The bus will depart at 7:30 from Oshima bus Oshima office(Google Maps) Duration is approximately 20 mins.

Payment for arrival bus
Fares for the arrival bus will be collected at the arena upon
arrival in cash. Please proceed to the collection lane aftergetting off the bus. We will make lanes for those who bring theexact amount for smooth entry. Departure bus tickets may bepurchased at this time.
Payment for departure bus
Departure bus tickets must be purchased prior. The tickets
are available upon arrival or at the event office. The tickets
can also be used on the public buses as well.

CautionOshima Bus Free Passes (1-day/2-days) cannot be used.
Bus Stop

Departure：Arena → Port
Organized buses from the arena to the departure port will be
run from around 12:30. Each bus will depart once all the seats
are filled. Duration is approximately 20 mins.
Buses are scheduled to transport everyone to the port for the
14:30 large passenger ship to Tokyo. However, please makesure to board as early as possible

Race information ※Please check the next two pages for special features and for your safety
Course information

MapClass

Length（km）

Climb(m)Winningtime（min.）

Start
area

Control
description(mm)Scale 1:10000, Contour Interval 2.5m, Runnability 4 color-scale

M21A1

10.3

245

80

S1155 x 50

Map size A3, Standard ISOM2017-2,

M21A2

10.3

24080

S1

155 x 50

W21A

6.814575

S1130 x 50

M20A

5.29050

S2125 x 50

W20A

4.66550

S2120 x 50

M21AS

6.815065

S1130 x 50

M35A

6.815065

S1130 x 50

M55A

4.865

55

S1100 x 50

M70A

2.72035

S295 x 50

M18A

3.750

35

S295 x 50

W21AS

4.86550

S1100 x 50

W35A

4.865

55

S1100 x 50

W60A

2.72040

S295 x 50

W18A

3.750

40

S2105 x 50

BL

4.150

40

S2110 x 50

BS2.93030

S295 x 50

Geo Park Izu-Oshima Ura Sabaku・Okuyama Sabaku（Updated in 2023）

Control Description ISCD2018
Special Symbols ×：Volcano observation equipment/ Tables○ ：Charcoal burning ground

Terrain Profile
Oshima is the largest of the nine islands of the Izu Island Chains.
The terrain is located at the foot of Mt. Mihara, which stands at theheart of the island. The entire terrain is covered with complex
features created by lava from past eruptions of Mt. Mihara., making
it one of the most complex terrains throughout Japan. The terrain
consists of a forest area of shrubs with low runnability and lowvisibility, and a desert area with high runnability and high visibility.
The ratio is approximately 1:3.
You can also spot a rich fishing ground nurtured by the Black
Current from the terrain. We hope you will be able to enjoy the deep
ultramarine ocean view. If you are lucky, you may encounter large
sea-mammals such as whales and dolphins during your voyage.
Please enjoy the surreal experience, from orienteering in the desert
to the ocean and of course, sightseeing.

Race overview

Course profile

Format and punching system
Point orienteering (Long Distance)
EMIT Punching system

We are providing long distance races that require comprehensiveorienteering skills.
M/W21A are courses fit for the Japan Ranking event, while otherclasses are adjusted to maximize your experience at Izu Oshima.
We promise you will be able to experience navigation with rapidlyTapes
Arena to S1｜ Blue tape 1km (15 min walk)

Arena to S2｜ Blue → Red tape 2.5km (35 min walk)Finish to Arena｜ Blue tape 300m (3 min walk)

Athletes must head to the EMIT read out station after finish.

changing scenery and excitement.

Prize ceremony
The top three runners (one runner for W18A and W60A) will beawarded. The prize ceremony will be held from 11:00 fromdecided classes at the Arena (outside).

Start, finish close and running time
Start finishes at 10:15. Runners may not start after this time.

Caution (please see the next two pages for detail)Finish closes at 12:35.

・Control descriptions are available two minutes before start.

Maximum running time is 150 mins. However, if you start late, you・There are refreshment points at S2 and inside the terrain. We will

may not be allocated this maximum running time. Please strictly

not provide refreshments at S1 or the finish.

adhere to the maximum running time or finish close, whichever is・Athletes may wear their jackets to S2. Please put them in the bags

faster. You will be disqualified if you go over the maximum runningfor collection before starting your race. The organizers will collecttime. Athletes must read out their EMIT card even if they decide toand deliver them to the arena accordingly.

quit mid-race.

・We recommend attire such as gloves and long-sleeves/pants andsupporters/ tapings as there are sharp rocks in the terrain.

Complaints and protests
Complaints must be made in writing as soon as possible to the eventoffice. The deadline is 13:00. Protest may be against the organizer’s
decision about a complaint. Any protest must be made in writing to
the event office no later than 15 minutes after the organizer has
informed the complainant of the decision about the complaint.
Juries:Mr. Ryota Hirayama (Chiba OLK/GROK)
Ms. Noe Kamijima (Tsurumai OLC)
Mr. Naoya Furudono (Tsubame-kai)

・We recommend carrying phones and whistles for safety. Please note
there are areas with bad connection.
・Please bring your health insurance card.
・Please refrain from entering any out-of-bounds areas.
・The Japan Anti-Doping Code applies for this event.

Special features and cautions
Anti-Reeves Fences

Other objects

There are anti-Reeves (small deer-like animas) fences/nets inside

Tiger rope
The tiger ropes are very

the terrain.

visible but are not marked on
the maps.

The fences in the left-hand picture are drawn as “High fences (518).”
You may only cross at the gates (below). Please also refrain fromtouching the fences as much as possible.
Uncomplete nets in the right-hand picture are not drawn on
the map. They are often on the ground and easy to look over.

Volcano observation equipment
This object is very visible from adistance.
（shown as ×（531）on themap）
Please do not touch

Please be careful as you may trip over them.
Onsen pipes
Onsen pipes are stationed

How to open the gatesclose to the hotel and are

There is a possibility of passing through fence gates during the race.

hotel equipment. Please be
careful not to step on or
break them.

This is the gate

To open, raise and release
the latch.

Push the gate after releasing
the latch

Please close after entering

Controls
As this terrain is part of a Geo Park,
some controls are stationed using
color cones.

(Note） The numbers for the descriptions are based on
ISOM2017-2

Hunting
It is currently hunting season at Oshima. There will be no hunting
on the day of the event in the race area. However, hunting may beheld in other areas. We will station staff at points with risks ofgoing out-of-bounds. Please follow the staffs’ instructions whenstopped.

For your safety
In our past events, there was a case where a runner failed toRoute back to the hotel when quitting mid-race

return to the arena even after three hours since finish close.

You should be able to reach the hiking road and return to the arena

They had gone far out of the mapped areas into the primary

if you head to the west side of the map if you get lost. Please doforest area where there was no connection.

not enter the densely rocky area as it is highly dangerous.

Fortunately, this person was able to come across the main road

Once entering the primary forest area, speed will slow down due toon their own and was rescued by a hiker before sundown.

low runnability. Please trust your compass and keep heading west

However, please be aware of your own safety.

until you reach the hiking road.
If you reach the anti-Reeves fence in the primary forest area, thePhones and whistles

area to the East is outside the map.

Navigation-assistance tools are usually prohibited atorienteering events, but we recommend carrying phones andwhistles for safety measures.
Please not connection is not stable inside the terrain.

＜Sample map＞
ArenaPrimary forest
area

Hiking RoadAnti-reeves
fencesHiking Road

Volcanic Rock AreaMapped area

Staff
Event Director

Ryo Ikuta

Event Secretary

Mana Nakamura

Technical Director

Kousuke Tachibana

Course Setter

Tatsuya Fujisawa

Entry and PR

Shino Tachibana

Accounting

Yasutomo Uetake

HQ

Ryo Ikuta

Kousuke Tachibana

Tatsuya Fujisawa

Atsuro Hiroe

Event office

Kenya Kitagawa

Yasutomo Uetake

Kazusa Tamura

Shiori Tomiyama

Start

Akane Tanaka

Misato Uranaka

Ayumi Sakane

Shino Tachibana

Naoto Komori

Rio Ichijo

Hiroaki Saito

Finish

Masae Kuno

Ryusei Sawamoto

Nozomi Hiroe

EMIT read out

Daiki Kuwabara

Tomohiro Hashimoto

Jun Ijichi

Ryu Aoyoshi

PatrolSota Takizawa

Kiyoshi Kogure

Shoichi Takamizawa

Natsuo Ito
Chiu Hoching

Kota Kasai

Tsuyoshi Sakurai

Yuki Ekimoto

First Aid

Mariko Nagase

Masaki Hashimoto

Rina Takahashi

Kids space and nursery

Misaki Kobayashi

Madoka Watanabe

Naomi Tagaki

Arisa Fukuda

Mayu Nishikawa

Masako Kobayashi

Yuko Miyakawa*Prize ceremony

Shino Tachibana

Bus

Rina Takahashi*

Preparations

Taketo Kobayashi

Akinori Uzu

Keiko Hasegawa

Kazuki Ito

Mana Nakamura*Dual position

Inquiry
Please contact the organizer via our home page for any inquiries prior to the event
URL: https://eskantoc.com/izuoshima2023/
ES Kanto Club Twitter：@eskantoc

For inquiries or emergencies on December 17, contact:
TEL : +81 80-4627-0623 ( Ryo Ikuta )Sponsors

8th Geo Park Izu-Oshima Orienteering Event
Bulletin 3
Published December 9, 2023