Our race didn't break up too much mainly because there were so many teams with the bare minimum of four riders, so no-one wanted to push the pace too hard in case they ended up dropping one of their own guys. In fact it was the team of three (who I guess knew they were coming last no matter what they did) who were the main antagonists, trying attacks all the time and this ending up dropping one team and very nearly a second on Jarvis (but one of them got back on during the downhill).
On the big climb, one team launched what was clearly a planned attack and all four of them (plus one from the team of three) got a gap and were never seen again. The remaining riders all got quite stretched out, but the gaps weren't big enough to cause any further breaks and it all came back together again once in the Jungle.
That left three teams of four left battling for second place on the final climb and our team had enough energy to hang on to the pack, but not very much more and we ended up coming fourth (all four riders finishing together in 15th through 18th) out of six teams total. But I set PR's on Jarvis, the climb up to Jungle Pens and Mayan Mountainside, so I can't say I didn't get a workout!