I've done it the last 3 years.
The course has 1 small hill (usually into a headwind), with a U-turn at the top of the hill where everyone bunches up and nearly comes to a stop unless you're in the front few, so if you're hanging off the back it's easy to catch up here. The rest of the course is very fast, but then when isn't a crit fast?

Most races seem to come down to a pack sprint.