My mom lives about 1000 miles away. Typically I may see her every other year, but this year, she's visited us twice (we paid for one of them) and she's talking about coming over to WDW to visit with us before our Dec cruise. I do call her once a week. When we lived in the same town, I probably saw her twice a month. I love her, but she does grate on my nerves.
My in-laws are now about 600 miles away. We usually see them 1-2 times per year. We typically go there for Christmas (my mom has other family come to her most Christmases), and they usually visit us once during the year. When we lived in the same town, we saw them at least weekly, usually 2-3 times a week. Much closer to them (physically and emotionally), and we often just dropped by.