A total of 23 races will be run and won during a six-hour period from 5.02pm, with Mildura's 12-event card kicking off just before the first of 11 gets underway at Melton.

Luke Humphreys will call the action from the Sunraysia, while Dan Mielicki takes up his regular spot in the tower at Melton Park.

Dual streams will be in operation at www.TrotsVision.com.au so you can pick your venue, while Sky Racing has scheduled all of the races on its main channel.

And this week is just the first of two big double-headers, with Mildura and Melton locked in through the same evening timeslot on July 14.

The meetings pave the way for metropolitan Saturday night racing at Bendigo this weekend and Kilmore in another seven days time.