4 X 200 Meter Relay. Australian women break olympic record with 7:38.08 4×200 free relay ariarne titmus had the fastest split of the night with a 1:52.95 on the anchor leg,. The post on the cis indoor 4×200 meter relay showed some interesting analysis on how to properly exchange batons for a relay.
I believe it is sometimes run at the collegiate level. A stacked roster in the 200 free, australia practically has this race.