Dinosaurs wearing running shoes might seem like an impossible sight, but many witnessed the curious spectacle during the second annual “T. Rex Stampede” in Nashville over the weekend.

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About 25 people in inflatable Tyrannosaurus rex costumes dashed across a pedestrian bridge during Saturday’s event.

Even a T. rex with a bachelorette sash and veil and a young boy in a tiny inflatable costume joined in on the fun.

Organizers said the event started as a gag, but returned for another year after it was a wild success.

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“Great job to everyone who participated on Saturday,” the event organizer wrote on Facebook. “It was super fun as always and I can’t wait until next year.”