
What Is Webscorer
Why Does Tokyo Yamathon Use It?
Wondering where to check your team’s start time, find the challenge map or see your finish time?
Meet Webscorer, the online registration, timing and results platform we use for Tokyo Yamathon.
It brings important event information together, making it easier for participants to prepare and for our volunteer team to manage the event.
Find your team and explore the challenge map
Before event day, check that your team appears on the correct confirmation list and review your assigned start time and wave.
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General Entry teams: View the General Entry confirmation list
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Sponsor teams: View the Sponsor confirmation list
You can also explore the Trek Challenge map to help prepare for your walk.
The map is the same for General Entry and Sponsor teams.
A challenge with a purpose
Tokyo Yamathon is a fundraising walking challenge, not a race. The core challenge takes teams on a journey around Tokyo covering approximately a marathon’s distance. We also offer shorter options: the Half Yamathon, approximately 21 km, and the Half a Half Yamathon, approximately 10 km.
Whichever distance your team chooses, the goal is to complete the challenge together while supporting our Community Impact Partners. Finishing times and rankings are secondary to that achievement.
Still, participants have asked a perfectly reasonable question: “How long did we take?”
Webscorer helps us answer it.
Why we chose Webscorer
We previously used timing chips. However, managing the chips and supporting equipment added complexity for an event run entirely by volunteers. We chose Webscorer to simplify that work and improve the participant experience across registration, payment and timing. It gives us a practical way to record team completion times and publish results online, while keeping our volunteers focused on helping participants.
How your team’s time is recorded
Tokyo Yamathon does not use timing chips. Our volunteers record finish times manually using the Webscorer app on timing devices. Your team’s time starts when your assigned wave starts. It does not start separately when each person crosses the start line, so please be ready to leave with your wave.
At the finish line, a volunteer timing operator records your finish by tapping
the device and selecting or entering your team number.
The system calculates your team’s elapsed time from the wave start
to the recorded finish.
Times are recorded to the second, with the finish recorded by a volunteer’s tap.
Help us record your finish clearly
Make sure the finish-line timing volunteers can see your team and identify your
team number.
Simply crossing the line does not automatically record your finish.
As your team approaches:
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Keep your bib numbers clearly visible.
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Call out your team number loudly and clearly.
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Follow any directions from a timing volunteer.
A cheerful shout of “Team 123, finishing!” helps our volunteers match the
right number to the right team—especially when several teams arrive together.
When can you see your results?
Your team’s result should normally appear online about five minutes after finishing.
You can view results on the Tokyo Yamathon homepage, where we have integrated Webscorer results, or directly on Webscorer. If your result is missing or looks incorrect, speak with the IVG-Japan help desk so we can check it.
What is the Webscorer app for?
Alongside the app our volunteers use for timing, participants can
use the free Webscorer app for optional GPS tracking. This helps our
event team check your team’s progress if we cannot reach you by phone.
It also lets colleagues, friends and family follow your journey through a
shared map link. This year, we are also trialling the app’s self-timing feature,
so you can compare the elapsed time on your phone with your official result.
Tracking runs on one phone per team, signed in with the Webscorer account
used to register the team. Location updates are sent every five minutes
when a mobile connection is available.
GPS tracking is optional and does not affect your official time or results.
Your official finish is still recorded by our finish-line timing volunteers.
For setup instructions and details, please read the guides below:
Check your start wave, explore the map and arrive ready for the challenge.
We look forward to seeing your team at the start—and hearing you at the finish!


