The Grid is an indoor rowing competition, based around 12 of the Concept2 Ranked Workouts – but you can use any rowing machine to take part.
It’s back for May 2024. Enter here:
https://competitioncorner.net/events/13444/details
Last year’s event info is here: https://compete.strongest.com/competitions/rowalong-the-grid-2023/ but this May, it’ll be slightly different, including a team challenge.