"If you had told me a few years ago that I would be running marathons on my weekends for fun, I would have fallen off my chair laughing," Ms Woodhouse said.
Despite her always having been into sport, it was not until she had a crack at New Zealand's most famous multisport event, the Coast to Coast, that a healthy pastime became a passion.
The idea for the charity came after she heard about the plight of the elephant and rhino - and the rangers who protect them - from her twin sister and brother-in-law, who live and work on Borana Conservancy, Kenya.
The rangers track and monitor individual animals, trying to protect them against heavily armed and dangerous poachers.
In the Sahara ultramarathon, Mr Woodhouse and her team raised $169,841. She has also started a magazine, Say Yes to Adventure, to showcase ordinary people doing extraordinary things, to raise funds.