does it really matter if its not a race but an event??. Same goal, to get round in the fastest time. You get placed accordingly and win stuff if your one of the quick ones. No BC points which is the only discernable difference between the 2.
For alot of people its looked upon as a good season opener to see how training has went. The course itself is a tough 31 miles, great descents, tough tough climbs and alot of them. As previously said, stay in top 50-100 to avoid bottleneck at first singletrack, although thats generally about 2 miles from the start at the top of the climb.
Its a good event, well worth doing