うたぴょんスポーツSaturday, May 16th, Uta headed out to Saiko — a lake area in Saitama, north of Tokyo, where local running clubs often train — with a group of her training friends.
The plan for the day had nothing to do with speed. It was LSD: long slow distance. Slow on purpose.
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Why this session
Uta is ten years old, born early in 2016. She already has some results behind her — she was ranked 10th nationally among third-grade girls over 1000m in the 2024 school year. But a ranking from last year does not pay the bills this year. The thing she needs right now is not another fast interval, it is a bigger engine underneath everything else.
Kids who only ever run fast tend to get good at running fast for a short time and then stall. The base — the boring stuff, the easy kilometers that build the heart and the legs without beating them up — is what lets a young runner keep improving over years instead of peaking early and getting hurt. That is the whole point of a day like this. No times to chase. No one to beat. Just time on feet, with friends, at a pace where you could hold a conversation if you wanted to.
What the session was
The session was LSD at Saiko — a flat, open stretch of path by the lake that a lot of Saitama-area junior runners use for exactly this kind of work. The description does not give an exact distance or split times for the day, and that is sort of the point: LSD is not measured in pace, it is measured in time spent moving steadily, below the effort where breathing gets hard.
She did not run alone. A group of her training friends came out together, which matters more than it sounds like it should. An easy run with a quiet kid who would rather be anywhere else is a chore. An easy run with friends turns into something closer to play, even while the body is quietly doing its work.
How it actually went
The title says it plainly: the training was fun. That is not a throwaway line. A ten-year-old who dreads practice will not keep doing this for years, and years is what distance running actually requires. A ten-year-old who looks forward to the easy days at Saiko with her friends has a much better chance of still being out there at fifteen, and that is the only timeline that matters to me.
My job on days like this is mostly to get her there, make sure she has water, and stay out of the way. There is no stopwatch pressure to layer on top of an easy run — that would defeat the entire purpose. I just watched a group of kids jog along a lake path on a Saturday, looking like they were having a good time, which is exactly what an LSD day is supposed to look like.
One caution if you are thinking about trying something similar with your own child: easy days only work if they stay easy. The temptation to race a friend, or to turn a slow run into a strava-segment sprint, is strong at this age, and it undoes the whole benefit. Keep it conversational, keep it short on pressure, and let the base build quietly in the background.
Saiko again next time, probably. She seemed happy about that.