It's a skier's climate-change nightmare - stabbing your poles at the melting tarseal of a hilly highway, instead of the snowy crust of an alpine trail.
But with wheels under his skis, the wind on his back and a driving ambition to break a Guinness World Record, 28-year-old Cesar Baena is happy to pull himself along the length of New Zealand's highways and byways for eight hours a day, over 43 days.
"This is my attempt to break the record for the longest journey on roller skis by zigzagging 3000km from Cape Reinga to Bluff," he said on arriving in Auckland - exhausted from battling Northland's steep hills but keen to head south.
The Venezuelan representative cross-country skier said he had held the record in 2012 when he covered 2246km between Oslo in Norway and Stockholm in Sweden.
"However, French national Gerard Proteau broke the record from Oslo to Paris last year and I want to reclaim it - for personal reasons."