There are lots of ways in and out of Dent and a quick look in the road atlas should offer lots of options.
However as some of you are travelling a fair distance so I'll offer up the easiest for you.
These are only the lines of least resistance there are many many more jiggery pokery ways to get there.
From the south, A1, take Harrogate/Weatherby to Skipton onto A65,
From M6 take J31 onto A59 to Gisburn onto A682 onto A65 at long preston.
M6 J34 A683 to Kirkby Londsdale and the A65.
Once onto the A65 continue to Kirkby Lonsdale where you turn right at Devils Bridge on the A683.
Through Casterton where you turn right onto a (keep your eyes peeled) small road to Barbon.
Continue onto the very scenic fell road all the way to Dent.
Or, stay on the A683 to Sedbergh and Dent is sign posted (5 miles).
There is a small road over from Ingleton, we call it the Gated road because there are (can you guess) lots of gates.
It's very steep, your bike may be falling over into the ditch behind you while you're closing the gates. (Haditlowered is the man to ask about it)
On this route your last fuel is in Ingeton.
From the North, J37 M6 A684 Sedbergh and onto Dent. There is fuel in Sedbergh but is not open late, fill up at truck stop at J38.
Or, M6 J40 to Brough,A685 Kirkby Stephen turn left on A683 to Sedbergh. Fuel can be had in Kirkby Stephen.
Phew.
I live local so if anymore info needed just ask. Or join my Saturday ride.