It could be about a journey from a place known as 310 (maybe an area code or some other identifier) to Yuma. It might involve the experiences of the characters during this travel, like the challenges they face on the road, the people they meet, or the personal growth they undergo during this trip.
Since we don't have the details of the story, it's difficult to say exactly. However, it might be a group of outlaws trying to escape from the '310' region and find refuge in Yuma. Or it could be a family who has to relocate from '310' to Yuma for some reason like a job opportunity or to escape a difficult situation back in '310'.
I'm not sure specifically, but likely there's a protagonist who is at the center of the events related to the three ten time in Yuma. Maybe a local sheriff or an ordinary person caught up in extraordinary circumstances.
3:10 to Yuma is purely fictional. It was created for entertainment purposes and doesn't draw from real-life events. The plot and characters were made up by the filmmakers.