He decided to challenge himself and also raise money for Macmillan Cancer Support.
“Both my mum and mother-in-law were looked after by Cancer Macmillan nurses,” Mr Scriven said.
Mr Scriven’s training efforts were hindered because he got bronchitis last month.
As well as training, he is on a strict diet in the lead-up to the triathlon.
PerthNow Digital Edition.
Your local paper, whenever you want it.Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOW“I have never competed in an ironman or a triathlon,” Mr Scriven said.
“I have taught myself to swim in a reasonable time using the techniques on the plan.”
To donate, visit https://www.justgiving.com/Reg-Scriven1/.