Association of International Marathons and Distance Races

The home of world running™

Running news

30 April 2020, 11am

10,667 laps of 15m trail

Ultramarathon – around a tree

by Brett Larner

The weekend of 25-26 April saw what may be the best 'social distancing' running performance yet.

In Tokyo’s western suburbs, on a riverbank, around a tree, for 54 hours and 40 minutes, 25-year-old Goshi Osada ran 10,667 laps of a 15m trail with 1m difference between its highest and lowest points, covering 100 miles (just over 160km), and climbing higher than Mount Everest and back down en route.


For further information on our partners, click on the logos above.

Distance Running

Official quarterly magazine of AIMS

Cover of 2022 Edition 2

Latest issue:
2022 Edition 2

Cover: 40th anniversary of AIMS

Keep up to date!

For the latest race dates please consult the official online AIMS calendar.

You can also subscribe to the AIMS calendar in your calendaring application of choice, whether on your phone, tablet or computer. Simply subscribe to webcal:// in your calendar app.

the home of world running™

AIMS Headquarters | OACA Olympic Complex | Av Spyros Louis, Athens, Greece | © AIMS 2022