According to Official Guinness Records,
The most people twirling batons is 2,002, achieved by Osaka Baton Twirling Association (Japan) at Osaka Municipal Central Gymnasium, in Osaka, Osaka, Japan, on 21 September 2015.The attempt was held as part of the 25th Osaka Baton Twirling Competition.
For a complete list of 2015 records, please visit 2015 Guinness Records in Japan.