The 1961 WDCC Otway Trial was held on July 22 and 23.
1961 VTC Round ? – WDCC Otway Trial
According to this brief article in Australian Motor Sports, this was the thirteenth Otway Trial conducted by the Western District Car Club and it was part of the inaugural Victorian Trials Championship. Like several earlier Otway Trials, it was a two day event that travelled from Geelong to Apollo Bay for an overnight stop before returning to Geelong on the Sunday. It seems to have been conducted predominantly in daylight.