The City Nature Challenge is free and open to everyone. I don’t know if your area has specific events that require a sign up, but any iNaturalist observation submitted over the CNC weekend counts towards the overall event.
Related topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| City Nature Challenge 2020 | 14 | 2598 | August 23, 2019 | |
| Is there bioblitz guidance? | 7 | 514 | February 20, 2024 | |
| Good ways to get local community involved in City Nature Challenge? | 21 | 685 | February 15, 2025 | |
| First Bioblitz experience | 6 | 103 | April 28, 2026 | |
| iNaturalist Ambassador Community Chat | 62 | 2268 | April 20, 2026 |