Date
Sat, 7 Nov 2026
Start
17:00
Venue
Hultets friluftsgård, Kristinehamn
Kristinehamn, Värmlands län
Countdown
November
The middle distance of the Iron Backbone: a proper trail marathon-plus, started at 17:00 so most of it is run after dark.
Key facts
01Night race, so a headlamp is a must
02Age 18+, or 16-17 with a signed guardian form
0310-hour maximum time
Create a free training plan for the Iron Backbone Ultra 35 km
7-day free trial, no card required
The course
The route
Kristinehamn
Distance35km
StartElevation
0 kmDrag map to rotate32.3 km
Weather
Early-November, Kristinehamn
5°CTypical high
1°CTypical low
-10°CColdest in 20 years
50%Days with rain
Highs around 5°C and lows around 1°C, but it has dropped to -10°C. Rain on 50% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
Organiser
Training
Training for the Iron Backbone Ultra 35 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Iron Backbone Ultra 35 km plan targets
Typical sessions
35 km
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Iron Backbone Ultra 35 km plan.
7-day free trial, no card required.
Other races at Iron Backbone Ultra
