Aquathlons
In addition to Varsity and BUCS, the club holds its own Novice Aquathlon in October and Cupper's (inter-collegiate) Aquathlon in June.
Individual Races
Check out the British Triathlon page for information about races. Although OUTriC doesn't provide transportation to these, you can use the club WhatsApp to get a group together to attend races and share transport.
Members often also take part other varsity matches and cuppers such as cross-country/cycling/swimming. OUTriC often has teams at Teddy Hall relays which is organised by OUCCC. The Parkrun in uni parks every Saturday is well attended by members. Other local events, such as Oxford Half and Town and Gown 10K also have lots of members entered so if you're interested in racing, post on the WhatsApp group and you'll likely find some company.