City Nature Challenge: iNaturalist BioBlitz Training is an educational workshop that prepares participants to take part in the global City Nature Challenge, a community science event focused on documenting local biodiversity. During the training, attendees learn how to use the iNaturalist mobile app to photograph and record observations of plants, animals, fungi, and other organisms in their surroundings. The session explains how these observations contribute to scientific data used to better understand and protect urban ecosystems. City Nature Challenge: iNaturalist BioBlitz Training helps participants build the skills needed to join the worldwide bioblitz effort, where communities work together to record as many species as possible in their area.