Kepler Challenge

Event Overview

Course & Terrain

Single 60 km loop of the Kepler Track, one of New Zealand’s Great Walks, starting and finishing at the Lake Te Anau Control Gates.

Key course features to know before comparing this race:

• The 1,000 m climb from Brod Bay to Luxmore Hut at 13.8 km, where gear is checked and Luxmore Grunt runners turn around
• The alpine ridgeline past Forest Burn and Hanging Valley shelters, the organizer’s hardest stage
• The steep descent into Iris Burn Hut at 28.4 km
• Beech forest and river running from Iris Burn past Rocky Point to Moturau Hut
• Rainbow Reach swing bridge at about 50 km, the last cutoff

The organizer describes a mix of flat running, steep climbs and hard descents, and a track that is well marked and well graded. The high point is 1,400 m. Long gravel sections alternate with steep, rocky ones, and tree roots run through the beech forest. The track turns slippery after rain or in snow. The last 32 km, from Iris Burn on, are far flatter, with about 270 m of climbing across the final three stages.

The Department of Conservation warns that cold, snow, strong wind and heavy rain can arrive at any time, and that avalanche risk can last into December. It can close the alpine section between Luxmore Hut and Iris Burn Hut. The organizer’s thermal and waterproof gear rules exist for this reason. Runners get a track and forecast update at the briefing. In extreme weather, the committee can swap in an alternative run of similar distance, without refunds, and the champions list marks 2004, 2019 and 2020 as adjusted courses.

Entry & Logistics

Why This Race Matters

The Kepler Track grew from a 1985 plan for a new circular walk to mark the centenary of New Zealand’s national parks. When it was completed in 1988, three Fiordland College teachers organized a one-off run, and 149 selected runners finished the first Kepler Challenge on December 10 that year. It has been held every year since, the 2021 edition in January 2022 because of Covid, and it now fills its 450 places in minutes. The race is still community-run: a trust formed in 1998 gave it charitable status, and any profits go to local groups. Daniel Jones’ seventh win in 2025 is the most by any runner, passing the six won by Russell Hurring and Ruby Muir.

Historical benchmark notes in the directory record (verify current records with the linked official sources):

• Men: Martin Dent, 4:33:37, 2013
• Women: Zelah Morrall, 5:23:34, 2003 (organizer’s records page; its champions list differs)

Preparing for a Race Like Kepler Challenge

The fixed-distance race guide covers the format as a whole. These guides go deeper:

• Walking strategy for ultramarathons: When and how to walk by terrain, effort and cutoffs.
• Crew and aid-station strategy: Crew tables, aid stops, drop bags and runner preferences.
• Hydration and sodium for ultramarathons: Fluid, sodium, thirst, sweat rate and hyponatremia risk.
• Tapering for ultramarathons: Plan the taper and race week around your own recovery.

Best Fit

• Experienced trail runners who can enter online the moment entry opens in July
• Runners who want an alpine Great Walk in one day with full checkpoint support
• Elite runners, with NZ$1,800 for each winner and up to NZ$5,000 for a race record
• Returning runners working toward the 5-, 10- and 20-year medals

Planning Notes

• Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
• The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
• Runners who miss these marks are withdrawn: Rocky Point in 8 hours (2:00 PM), Moturau Hut in 9:15 (3:15 PM) and Rainbow Reach in 10 hours (4:00 PM).
• Compulsory gear is checked at registration and before the start. Anyone missing an item at the Luxmore Hut check is automatically disqualified, and spot checks follow at the finish.
• The gear list is long: two thermal long-sleeved tops, thermal long johns, hat, gloves, seam-sealed jacket and overtrousers, and a survival blanket. Skins do not count as thermal layers.
• The organizer gives two figures for Rainbow Reach: 50 km in the rules and 50.6 km on the race profile. It gives about 2,200 m of climbing, while Trail Running NZ reports 2,000 m.
• Sources disagree on the women’s record. The records page gives Zelah Morrall 5:23:34 in 2003, while the organizer’s champions list shows her at 5:23:24 and marks Andra Priestley’s 5:20:36 from 1997 as the race record.
• Faster winning times from 2019 and 2020 were on adjusted courses, and the race-record prize applies only on the full 60 km alpine course.
• Runners who withdraw on the course may have to pay transport costs.

Event FAQs

Related Preparation

• Compare this race in the full 2026 calendar
• Open the Fixed-Distance format guide
• Compare all race formats
• Use the timed-race pace calculator
• Plan checkpoint arrivals and cutoff buffers
• Print a pace band for your goal time
• Estimate race calories and plan fueling
• Build a crew and drop-bag plan
• Build a race-specific gear checklist