如何使用R在距离列表(X/Y)中选择/查找坐标?

I have a data frame with list of X/Y locations (>2000 rows). What I want is to select or find all the rows/locations based on a max distance. For example, from the data frame select all the locations that are between 1-100 km from each other. Any suggestions on how to do this?I have a data frame with list of X/Y locations