bhoyjim said:
It's ok, i've just looked at Scotrail website, i can get train to Embra then Dalmeny in time for the start, Dalmeny is where it's starting right ?
... or you could jump off at Linlithgow and cruise gently along to Dalmeny, have a cuppa and set off with the pack

.
pickup1980 said:
<facetious mode> Depends on your definition of "tough"

.
More seriously, most Audax events around these parts use the available hills to give a bit of a challenge BUT the organisers want to encourage people to ride their events, so the are not 'stupid' hilly. I did my first audax last year (160k Mearns Meander) and, yes it challenged me (first 100 mile ride) and had some serious hills (Cairn o' Mount from Banchory). I wasn't particularly fit, my bike was an ancient down-tube shifting Peugeot road bike, the saddle was a Lidl special and I almost ran out of water.
I finished, well within the time limit - and promptly did the 100k Potter for Tea the next day

. Daft, or what ?
You can ride at your own pace, ride with someone else of similar pace, share the navigation, enjoy the views, be challenged by the hills (no one will stop you walking up them if you so desire

) and revel in the downhill bits

. One of the joys of audax is that you can do it
your way, you don't have to go at a mad dash.
You will have a great sense of satisfaction if you have never ridden this sort of distance before. If you have .... piece of cake

!
Very good
info on audax here.
I'm doing a Kirriemuir event the day before, so might not make it to the Twa Wee Coonties but it looks very appealing .....
HTH