The small things that make a race weekend work, and the ones most often forgotten in the parking lot at 7am.
Two groups matter most. Race day items are what goes in the bag the night before: bib belts, hand warmers, spare straps and the odds and ends that get lost. Boot and glove dryers are the single best investment for a multi-day trip, because boots that start the morning damp are cold all day and no sock fixes that.