
In 2011 I walked into Tasmania’s Western Arthurs Range out of shape, a bit unwell, and worried.
Each evening I’d sit at camp dreading the next day. The weather wasn’t kind. The walking was steep, scrubby, and unforgiving. And every climb felt like it was costing me more than it should. I finished the trip having survived it, and at the time, not having enjoyed it. There’s a difference, and you know which one you’ve had at the end of a hike.
In 2023 I went back. Same range. Same direction. With my mate Woolza, who’d also done both. Different result.
We smashed out each day. Had whole afternoons free to sit at camp, eat, talk, look at the country. The big days at the end were genuinely big, and our bodies coped. We recovered overnight. It was one of the best trips we’ve ever had.
Same walk. Twelve years apart. The trail didn’t get easier.
Today we’ll cover:
What changed between the two trips (and what didn’t)
The kind of fitness that actually matters on a multi-day
A simple way to tell if you’ve got it before you leave home
Let me explain.
Same Range, Different Body
People assume the difference between those two trips was experience. It wasn’t. I’d done plenty of multi-days before that 2011 trip, I’d even worked for years as a guide and I’d been to the area on many occasions previously. The terrain wasn’t new to me. The route wasn’t a mystery. The gear was sound on both occasions.
The difference was that in 2023 I arrived fitter than the walk demanded.
Not fit enough. Fitter. I’d spent the lead-up doing loaded walking, building real specific multi-day capacity into my legs and shoulders. By the time I rocked up at the start of the track, the days the Western Arthurs throws at you weren’t at the edge of what I could do. They were comfortably inside it.
That extra room above the demand line is what I call energy margin. And it’s the thing nobody talks about, because it’s invisible until the trail tries to take it from you.
Why ‘Fit Enough’ Isn’t Enough
The Western Arthurs in 2011 taught me that fit-enough is fragile.
Fit-enough means you can do the walk if everything goes to plan. The catch is, on a hard multi-day, things never go to plan. The weather turns (like it did for us… for 12 days). You miss your water source. A river crossing chews up an hour. Someone in the group has a bad day.
If you’re fit-enough, every one of those events digs into a reserve you don’t have. By day four you’re cooked, and now you’re not making good decisions. By day six the trip has shrunk to a slog, and the country, the views, the experience you came for, all of it disappears into just trying to get to the end.
Fitter-than-the-walk-demands gives you room to absorb the unplanned bits. The weather closes in and you push through and eat better that night. A river crossing takes an hour and you still finish before dark. Someone has a bad day and you cover for them without your own day collapsing.
That’s what energy margin actually buys you. Not bragging rights. Just a trip that still feels like a trip when things get hard.

Try This Before Your Next Big Walk
ACTION: Look at the hardest planned day of your next multi-day. The biggest km, the most elevation, the toughest terrain. Ask honestly: could you do that day right now, with full pack, and finish with energy left over?
If the answer is ‘I think so’, that’s not energy margin. That’s fit-enough. Build above that line in the weeks before you leave.
Want a quick read on whether your fitness, gear, food, and planning are actually trip-ready? Take the free Multi-Day Readiness Quiz. Two minutes, no fluff.
THAT’S ALL FOR THIS WEEK
Thanks for reading Mowser’s Musings. I hope this helps you hike further and happier.
Until next week, keep exploring.
Mowser

Discover more. Hike further.
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