Donna tagged the butterfly with tag number ULN255 and released it from her garden in Livonia, Michigan, USA, on August 31.
Brenda found the Monarch with tag number ULN255, in her garden in Westland, Michigan, USA, on September 8.
That's a 5.4 mile distance, so the butterfly has quite a way to go yet.
By people tagging Monarch butterflies, and others finding the tagged butterflies and reporting their sightings, so much information is gained.
If you are along the Monarch butterfly flight path, in the USA, I encourage you to participate in this.
Here's the link to JOURNEY NORTH, where you can report the tag numbers you find.
This is the flight path for the Monarch with Tag ULN255, to date.