Largest opioid overdose reversal training

The largest opioid overdose reversal training is 1,167 and was achieved by Micah's Hugs (USA), with the support of Analy High School, in Sebastopol, California, USA, on 17 October 2025.

The event took place at Analy High School Gym in Sebastopol, California, USA, on 17 October 2025. A total of 1,202 participants were counted, with 35 disqualifications, resulting in a final verified total of 1,167 participants. The session began at 11:11 a.m. and concluded at 10:41 a.m. (30 min). Stewards from the U.S. Coast Guard Training Center Petaluma oversaw the attempt, while independent witnesses—certified medical professionals, including National EMS–certified EMTs—verified the accuracy and compliance of the training according to Guinness World Records guidelines.