Races/Canada
Training plan for the Sulphur Springs Trail Race 100K
Saturday, 29 May 2027 in Ancaster, Canada. That is 27 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
Starts the week of 4 January 2027 — 7 weeks in hand.
100K — a 24-week build, 6 runs a week
Starts the week of 7 December 2026 — 3 weeks in hand.
On the day
Distances: 50K, 100K. Entries, course and timings are sites.google.com’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.