where are you in midlothian sarah? i am in colinton and regularly run routes around the water of leith, pentland hills, union canal and around edinburgh.
if you are going to run in the mornings while it is still dark, please invest in high visibility wear (even if you are in the city). a running bib can cost as little as 6 pounds. if you are going to run off road it may also be worthwhile investing in a head torch, so that you can see the ground in front of you.
