Osaka 30K Autumn (大阪30K秋大会)

The organisers describe Osaka 30K Autumn as a step race, meaning it is built to help runners establish and hold a target pace rather than to be a peak performance in itself. The distance sits between a half marathon and a full marathon, so it works as a dress rehearsal for a marathon or longer goal race later in the season, letting you practise fuelling, pacing and race-day routine over 30 kilometres.

It suits runners who already have a goal race on the calendar and want a well-defined stepping stone on the way to it. The organisers say the event exists to support runners in achieving the goals of their target race, so the emphasis is on controlled, purposeful running rather than all-out racing.

The event is listed on an English-language race calendar but the entry itself is handled by Runnet, a Japanese platform, so parts of the form may be in Japanese. If you are entering from outside Japan it is worth allowing extra time to complete the form and checking that your payment card works for a yen transaction.

Yes. Separate listings for the same 3 October 2026 date appear for a Late Entry and a Last Minute Entry version of the Osaka 30K Autumn, which means runners who miss the main entry window can still secure a place closer to race day. These later windows normally carry a higher fee than the standard entry.

The published three-year averages for October in Osaka show daytime highs around 24.0 degrees Celsius and overnight lows near 15.9 degrees, with a feels-like range of about 15.4 to 23.8 degrees. Rainfall averages only about 4.8 millimetres for the month and there is no snow, though humidity sits around 76.5 percent and the maximum UV index reaches a moderate 4.0. Sunrise is around 06:04 and sunset around 17:22, so the race is run in daylight.