If you've ever taken part in a mass participation record attempt, from the largest number of finishers in a marathon (59,226 runners at londonmarathon in 2026) to the largest yoga lesson (300,105 participants in Andhra Pradesh, India in 2025) head to GWRstore.com or click the link in our bio to claim your certificate ✨ #guinnessworldrecords #londonmarathon