Hillingdon Duathlon 9 November

Are there any dualathons which are bike and swim only?
I hate running but am pretty good at the other two and really want to do something like this
For triathlons, do you reckon its possible to just blag the running leg if your swimming and cycling is strong. Or is training really needed?

I think there's a duathlon in St Albans which is swim and cycle only - have a Google