Had a look at the website Scotty. If you haven't booked yet, the nearest to the race start/pasta party (i.e. less than 5 mins walk) are Hebrides, East Dene and Taigh na Teile. Next closest are Ardgowan, Aros and Cambeth Lodge (10 mins walk approx). All are very hany for the city centre (i.e. pubs!) too.
I just hope the weather is good for the day, so that the scenery is at its best. I was out that way for a run (in the car) on Sunday and it was just gorgeous. Sunny, not a breath of wind so the loch was like glass, and very very green. Ahhhh, lurvely.