Maintain a manageable pace

Half wheeling is a perennial trap for cyclists riding side by side. The speed of the bunch will gradually ratchet up as each of the leading riders matches the pace of the other. Eventually, everyone is suffering at an unsustainable tempo. Agree on a pace beforehand and stick to it. During the ride, make changes in speed gradually: slow down on uphills and don’t accelerate as you come through to the front.