There are no secrets or magic tricks rly (far as I know anyways). Bring it up progressively, add 4-5 miles per week (the 10% rule of thumb doesnt work too good starting low), cut back every 4-5 weeks then bring it up again. Listen to your body and err on the side of caution.
All of that you want to modulate depending on different factors (age, weight, general fitness, injury history etc.).
I understand the question was directed to someone else but hey, the more opinions the better. Or something. :)