To use 550 you will have to first head South from Santa Fe on I25 to Bernalillo. You will then pick up 550 towards Bloomfield and North from there to Durango. There are several opportunities for fuel in Bernalillo, Cuba and then Bloomfield. Should be easy sailing--fuel wise--from Bloomfield to Durango. Route 550 from Bernalillo to Bloomfield is a very nice stretch of 2-lane pavement. Have fun, hope this helps.