Have a 3000 mile, over 1 year, goal for biking. (Road and off-road on a mountain bike.) Not a New Years resolution as I started on Dec 1. I am a little behind 250 miles I needed in the month of December. Need to make up ground in Jan. 25 days of 15 miles would do it plus give me a good buffer.
I am at a 14-15 mph pace now, so it takes me about an hour to go 15 miles. I have a secondary plan, call it a framework instead of a goal, to do at a minimum one hour of activity every day. Walking, biking, etc is all game.
Using mytracks and Google fit to track both.
That aside, however.... I am just trying to have fun. Have lots of fun and it seems less like excercise and more like adventures.