The event will now span three days, with a 60km cycle road race - the Canal Caper - added to the holiday weekend proceedings.
The events usually offered - the 44km Dusky Trail mountain bike race on a Department of Conservation trail and the 19.2km Pyramid Run - will also be held again.
The Canal Caper will take road cyclists on a tour of Twizel's turquoise blue hydro-electricity canals, with views to Lakes Ruataniwha and Ohau.
It is open to two-person teams and individuals.
Event organiser Ali Bell said Canal Caper was created by local multisporter Steve Skinner in response to participants asking for three days of outdoor activities instead of two.
"People love the Pyramid Run and Dusky Trail, so Steve decided to come up with a third discipline to provide a diverse range of activities," she said.
The popular Pyramid Run is suitable for runners and walkers of all ages.
The race starts and finishes at Ben Ohau Station and has a few undulations, with a climb of about 200m over 5km to the Pyramid Saddle.
The Dusky Trail Mountain Bike begins and ends at Ben Ohau Station and includes six river crossings and an overall vertical climb of 500m.
It traverses four iconic high country stations through snow tussock and other alpine fauna, with majestic views of Aoraki-Mount Cook and Lakes Pukaki and Benmore.
The tough weekend will start on Saturday, October 24, with the Pyramid Run, and the next day the road cyclists will be out in force, competing in the Canal Caper.
On Labour Weekend Monday, the final event, the Dusky Trail mountain bike race, will take place.
