2025 LAKE BIWA 100 Overview

Schedule

October 9, 2025 (Thu) 14:00-20:00
　　　Bib distribution at Yunoyamaonsen Kibosou (Shuttle bus is available from Yunoyamaonsen station, Free car park is
available)
October 10, 2025 (Fri)
　　　07:30～08:30　Receive GPS device＆ Deposit drop bags
-08:45 Gathering at start line (Runners assigned to the first and second waves gather at the start line by
8:45 and the third group standby near the starting area)
08:45-09:00 Opening ceremony and Briefing
09:00-09:10 Wave start (100 runners of 3 groups departing at every 5 minutes)
October 12, 2025 (Sun)
10:00- BBQ
13:10 Cut-off time 52hours
13:00- Award ceremony (at the beach in front of Hira Lake House)

Race Location
Mountain area ranging from South to Western Shiga, Mie, Kyoto
(Suzuka Mountain range, Konan Alps, Hiei Mountain range, Hira Mountain range)

Venue
Bib distribution & Start Yunoyamaonsen Kibosou Komono-cho, Mie (Shuttle bus service is available between Yunoyamaonsen station and Kibosou, Free car park is available )
Finish & Podium Hira Lake House Otsu, Shiga（Free car park is available for people who are staying at Hira Lake House. Booking must be made)

Distance 100mile（169km）　Cumulative elevation:D+10,500m

Cut-off time 52 hours

Number of bibs 300 bibs

Entry
[Entry Period for lottery and Entry Method]*dates are in Japan time
1-19 May 2025
Google form link will be here on 1st May.
*No participation fee needs to be paid at this stage

[Lottery]
Announcement of lottery results: 24 May 2025
*Lottery results will be notified individually via e-mail.

[Sign-up Period after Announcement of Lottery Results]
For securing a place in the race, final sign-up must be made until 10 June 2025 with a payment of a registration fee.
In order to confirm, you need to submit the form with a credit card payment. You will receive a link in your result notification of lottery on 24 May 2025.

Participation Fee

JPY38,000+transaction charge

• The registration fee will be refunded according to the refund policy if you cancel after payment
• Bus fare to the start area from the finish area Hira Lake House or Otsu station (fare will be announced when bus booking starts) is not included

Donation-based Entry

Limited to 10 donated entry bibs
Entry fee 100,000 yen (entry fee 38,000 yen + donation 62,000 yen)
Participation is confirmed without a lottery. (Must meet participation requirements).
Registration opens on 1 May at 7am Japan time on a first-come, first-served basis.
A link to the entry screen will be posted here.

Your donation will be donated to the relevant authorities who carry out the maintenance and upkeep of the entire trail on the course, and used for maintenance activities carried out as the LAKE BIWA 100 Executive Committee, with the aim of making the event sustainable.

• Please note that the donation is not tax deductible.
• Those who use the donation-based entry are not required to pay the transaction charge.

Refund Policy

• 30,000 yen will be refunded if you cancel by 3 month before（Jun 10 2025）
• 20,000 yen will be refunded if you cancel by 2 month before (August 10 2025)
• 10,000 yen will be refunded if you cancel by 1 month before (September 10 2025)
• For whatever reasons, no refund will be available for the cancellation made after September 11 2025.

Eligibility for Entry
Runners meet all of the following [Eligibility] and [Conditions for Participation] are eligible for the entry

[Eligibility]
• Must be 18 years of age or older (as of the date of the race)
• Meet one of the following criteria by the time of entry

Completed the LAKE BIWA 100 in 2021 – 2024

Completed trail running races with distances of 100mile or more since 2021

450 or higher in the UTMB or ITRA performance index 100M category

[Conditions for Participation]
• Must comply with rules set by Lake Biwa 100 organizer.
• Must be in possession of a personal accident insurance that covers the cost of search and rescue and evacuation in the mountains. It must also cover hospitalization expenses. The insurance must cover the sport of trail running and the participation in long distance races.
• Must be capable of dealing with all kinds of accidents which may occur during the race (physical condition, injury, bad weather conditions, distress, etc.) at your own risk.
•Must be capable of using the GPX file and GPS watch navigation function on your own, as well as the offline map App on your smartphone, and must be able to self-navigate on trails and city areas with little course marking.
• Must complete a medical check list, sign a waiver form, and submit them online by the required date.
• Must be able to watch briefing videos uploaded to YouTube by the day before the race.
• Must be able to communicate in Japanese or English

Invitations for Elite Runner *All the above eligibility criteria need to be fulfilled
3 male runners who have a UTMB® Index above 840 and 3 female runners who have a UTMB® Index above 720 are invited as elite runner. Lake Biwa 100 organizer will cover the participation fee, transportation expenses (up to JPY130, 000 for oversea runner), and four nights accommodations.

Additionally, Lake Biwa 100 organizer covers the participation fee for 5 male runners having a UTMB® Index above 780, and 5 female runners having a UTMB® Index above 660.

Please contact info@lakebiwa100.com if you are interested in.
Bibs are available on a first come, first served basis.

Priority Entry

If you become a finisher of 2024 edition of LAKE BIWA 100, you will receive the email about priority entry in April 2025 and you can directly enter without a lottery.

Awards
The first 5 male runners, and the first 5 female runners will be on podium and given a trophy and a prize gift.
The winner of Male and Female receives prize money of 100,000 yen and will be invited to Everest 135 mile race in Nepal. All runners who finish the race receive a buckle, a finisher’s jacket, a finisher’s certification and will be qualified to register to Hardrock 100 and Everest 135 mile.

Race Director
Kaori Niwa (Salomon Athlete)

Sponsors

Main Sponsor Salomon

Gold Sponsor Otsuka Pharmaceutical Co, Ltd., Asuka Foods, LUC+, raun

Silver Sponsor Inner Fact, Shigakenki, Moriya Ophthalmology, IBUKI, finetrack, Eco Trade

Supplier Heiwado

Event Organizer
LAKE BIWA 100 Committee
LAKE BIWA 100 Organizing Office
（ info@lakebiwa100.com）

Qualifying race for Hardrock 100