Races/New Zealand
Training plan for the Northburn Petzl 100KM Ultra
Saturday, 20 March 2027 in Cromwell, New Zealand. That is 17 weeks away.
When a build would have to start
OLTRA plans a block of a length that suits the distance, then works backwards from race day. For this one:
50K — a 20-week build, 5 runs a week
Not enough room left for the full build.
100K — a 24-week build, 6 runs a week
Not enough room left for the full build.
Too close? The next one
The organiser runs this the third Saturday in March, which puts the 2028 race on Saturday, 18 March 2028. That date is not announced yet, so check it before planning to it — but a 100K build for it would start the week of 27 September 2027.
On the day
Distances: 50K, 100K. Entries, course and timings are northburn100.co.nz’s. They decide when entries open and close, and whether the race runs at all — OLTRA sells nothing here and takes nothing from them.
The date here is the one the organiser published, rechecked every 1 hour against the list. Confirm it on their site before you enter.