Community
Most of JGID happens in the gaps between the runs.
The 13 is one weekend a month. The rest of the time it's a Strava club, a group chat, and a few hundred people in different towns who've got a reason to check in on each other.
Everyone's welcome — any pace, any distance, any background. You don't have to be fast, and you don't have to say much. Turning up quietly is a perfectly good way to be part of this.