Pokémon GO is challenging Trainers to reach 500,000 check-ins at community meetups worldwide by Nov. 14 for a code redeemable for 10 Max Mushrooms, part of the game’s 10th anniversary celebrations. Trainers who check in at a community meetup during the event week can also earn daily Timed Research rewards. Research available Nov. 9-10 awards 10 Pinap Berries, a Premium Battle Pass, 1,500 Stardust, 5,500 XP and 100 Link Charges; Nov. 11-13 rewards include 5,500 XP, five Great Balls, 2,000 Stardust and 800 Max Particles. On Nov. 14-15, rewards include 800 Max Particles, a Raid Pass, Machamp wearing a modern jacket, 2,026 XP and 2,026 Stardust.
Source: Official Pokémon GO blog