Annika Lenz, Ciara Monahan and Maria Polyakova are all taking part in summer competition.
Campbell matched her 11th-place finish at the 2014 10K event.
The Pac-12 Newcomer of the Year competed in the 3-Meter event.
It was awards week for the Bruins for both their in and out of the water success.
The freshman is the fourth Bruin diver to be named league Newcomer of the Year.
Annika Lenz, Noelle Tarazona and the 400 Free Relay all advanced to the consolations on Saturday.
The freshman records the best-ever finish for a Bruin diver at the NCAA Championships.
UCLA posted a pair of school records in relays, the 200 Freestyle and 400 Medley, on Thursday.
The three-day event runs from Thursday through Saturday in Greensboro, N.C.
Annika Lenz, along with teammate Maria Polaykova, qualified for next week's NCAA Championships.
Freshman Maria Polyakova posted UCLA's best finish at NCAA Zones since 2009 on Tuesday.
Maria Polyakova eclipsed the 300-mark twice, while Annika Lenz set a pair of season bests on Monday.