If you're on the back of your group when you reach the twisty-turny bit of the course towards the end, watch out that you don't drop out of the draft at each corner.
In one of the IRL Without Borders races, I was in a group of four as we reached that part of the course (been dropped from the main group at the Aqueduct) and I was hanging on a bit at the back, but had still been able to stay with the group until we reached that section. I then had to keep on surging to stay with this group, as I'd lose the draft effect every time the group turned, even though I was still within touching distance of the wheel in front of me. It would say on screen "Close the Gap" with 2-3 metres listed at every bend (and sometimes would remove the draft completely, even if only very briefly) and I did notice the difference each time in terms of my speed dropping. It meant that I was probably having to put out the same sort of watts as the guy on the front to keep with them; it was better to be in one of the middle places.