The 2009 Painathlon is on Saturday 8th August, starting at 7am.
http://www.painathlon.com/
The race involves doing 10 of Perth's toughest runs, ranging from City Beach to the Hills, and finishing at Jacob's Ladder (10 reps!), with cycling to the various run locations. There is 51kms of running and 118kms of cycling. The course record is 7hrs 38mins.
The event raises funds for Variety WA, and entry forms are at the website above. Last year there were 50 entries.