Oh ok cool ! Whatever works ! Haha <| sep |> That ' s sucks , we have a few clients like that . They get almost zero priority during busy times . <| sep |> The long run might be important if you are in a marathon cycle . It only becomes important if you have all the other components of your training optimized . If not the long run is high risklow reward . It is total mileage that is important , not so much how you accumulate the mileage . While you are building it is better to concentrate on other parts of your training . I do my intervals on Sunday morning and I think they are the backbone of my training . I run in the mornings so the only time I can really do a long run is on Saturday mornings . A long run on Saturday means I can ' t do a quality interval session on Sunday so I minimized my long runs . It ' s worked out pretty well for me . I ran a 20454 for 30 k with only one run of two hours . I am 52 so that age grades to a 15142 for a 30 k . Once you get hardened to running lots of miles you can add long runs but for building they really aren ' t necessary .