With Mavericks how does one sync calendars without wifi?

Syncing with a cable via iTunes has been removed in Mavericks: you are expected to use iCloud or possibly another cloud-based service, which obviously requires you to have access to the internet - requiring wi-fi for the iOS devices. If you have a wired internet connection on the Mac it may be possible to set up internet sharing, where the Mac becomes in effect a wifi station to which devices can connect. I assume this facility is still available in Mavericks - you should ask in the Mavericks forum how to set this up.