Mission Day Guidelines: http://bit.ly/MissionDay2020Guideline
2020 Application form: http://bit.ly/MissionDay2020Application
Public Template Mission Submission (COPY)
NL-1331X application form (for a MD+): http://bit.ly/IngressNL1331
If your city is hosting a Hexathlon or Anomaly, that will prioritize applications to support Mission Days for these cities.
For more information, please see the update in the Ingress forum here:
GORUCK now also supports Hexathlon Events and standalone Mission Days (minimum 20 participants). More information in the GORUCK application form.