SUNNY SIDE UP Running Club Makes Its Long-Awaited Entry! Report on Participation in the “Bloomberg Square Mile Relay Tokyo”
Hello, everyone!
I’m Kusai from the Public Relations Division, Bureau 3 Sports, and I joined the company in April 2023.
On May 18, the “Bloomberg Square Mile Relay Tokyo” was held in Marunouchi, Tokyo, and I participated as one of the runners, so I’d like to report on the event!
The “Bloomberg Square Mile Relay” is a popular corporate running event held worldwide, where teams of 10 runners each complete one mile (1.6 km), competing for the best combined time over 10 miles (16 km).
In Japan, the event was first held in Marunouchi, Tokyo in 2017, and this year marked the fourth edition, held for the first time in four years.In Marunouchi, typically a calm business district filled with office workers, participating companies and organizations competed in an intense race for the title of “Tokyo’s Fastest Company.”
This year’s race saw 49 corporate teams from Tokyo’s business center participate. SUNNY SIDE UP formed a team consisting of “Running Club” members and new graduates, entering the mixed division (composed of at least one male and at least four females).
▼Click here for the support team’s report
Cheering Gets Intense Too!! “Bloomberg Square Mile Relay Tokyo” Event Report – Cheering Edition
▼Click here for past events
Run Through the Heart of Marunouchi! “Bloomberg Square Mile Relay Tokyo” Participation Report

Upon arriving at the venue, the entire team was overwhelmed by the race-ready atmosphere that had transformed Marunouchi, and our excitement soared.

We all changed into our Running Club uniforms and warmed up while waiting for the race to start!

Before the start, we gathered in a circle! A youthful moment! (laughs)
We counted down together from 10 seconds before the start! The venue’s energy reached its peak!

And then, the race began!
The intensity of all the runners bursting forward at once was incredible…!
There were so many runners that we had trouble spotting our team members, but…we passed the baton with excellent times and got off to a fantastic start!

After that, we continued passing the baton smoothly. There were even moments when fellow new graduates passed the baton to each other!

Many SUNNY SIDE UP members came to the event to cheer and encourage the runners.The support from teammates during tough moments was incredibly empowering!

After finishing their runs, some senior members were glowing, while some of my fellow new graduates were completely exhausted. (laughs)

Our oldest member ran as the anchor!! After crossing the finish line, we all greeted them with smiles and celebrated each other’s efforts!! The “SSU Running Club” finished with smiles all the way to the end!
And the results were…
We placed 2nd in the mixed division!!! 🥈
Wonderful 👏👏👏

Finally, we took a commemorative photo together! What amazing smiles, if I do say so myself!!
As someone who played sports for many years, I was confident in my stamina, but… it was tougher than I imagined, and the next day I had muscle soreness all over…
However, I couldn’t forget the exhilarating feeling after running… and somehow, after this event, I officially joined the “Running Club.” (laughs)
I think it’s because the venue was more exciting than I imagined, and I was able to experience the “fun excitement” that SUNNY SIDE UP creates as one of the participants.
Also, it was very impressive that the supporters cheered not only for their own teams but for all the runners, and the entire venue was filled with smiles.
I’m truly glad I was able to participate in such a wonderful event as a runner!
And by passing a single baton across generations and departments, the bond between members deepened even further, making it a thoroughly satisfying event!



