Create a hexagon grid for every 100km using Adobe Illustrator

[melodycook]

Hi! Is it possible using Illustrator and the complimentary version of arcgis to draw a regional map and then add a grid that shows distance? After drawing my map board, I'd like to be able to add a layer that shows 100km using hexagons. In the past I've just gone in with the measure tool in google maps but I thought there has to be a layer or a way to do this with precision. Thanks! Screenshot of a map that was mocked up in powerpoint that I'm now trying to fine tune.