Almost 220 competitors from around the state, plus a handful from interstate, are set to compete in the Swimming Tasmania sprint and relay championships at the Launceston Aquatic Centre.

Session one, on Saturday, features a 24-event relay program.

Warm-up is from 3pm with racing from 4pm.

Session 2, on Sunday, includes the 80-event 50-metre sprint program.

Warm-up is from 8am with racing from 9am.

Former Launceston-based swimmer Jardene Ralph and her Sandy Bay clubmate, Matilda Smith, are competing at the Victorian open championships this weekend.

Meanwhile, Hobart Aquatic's multiclass powerhouse Jet Jankiewicz is taking part in the World Para Series, also part of the Victorian Open competition, as a member of the National Para Development Team, according to Swimming Tasmania.

Hobart Aquatic's Ella Chan, formerly of Launceston, set a new state long-course record for 13-year-old girls in 50m butterfly (29.73 seconds) and clubmate Lacy Kamprad broke the 11 and under girls' 100m breaststroke record (1:23.81) at a time trial earlier this month.

Two of the sport's stalwarts, sisters Susan Cure and Glenise Gale, are still winning medals for swimming.

They both received Medals of the Order of Australia (OAM) for their services to swimming in the Australia Day honours.

Cure is president of Swimming Tasmania and Gale is on its board of directors.

Hobart Aquatic club captain Tim Belstead, 23, swam with distinction when he competed at the South Australian championships.

Belstead posted an impressive eight-second personal best time in the heats to claim a position in the 200m butterfly final, alongside Olympian Kyle Chalmers. Belstead went on to win bronze.