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The trials of the trail

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November 2018 Issue

For most people, walking a thru-hike will be the physical challenge of a lifetime. So what happens to your body on such a gruelling journey, and how can you prepare?

“Nothing can ever prepare you,” says Julie Stacey.

The 45-year-old walked the 3000km Te Araroa Trail last season. A former marathon runner, Stacey spent about five months training, running 5km every day in her lunch break, tramping up mountains in her weekends, and even walking around Hamilton with a heavy pack at 5am each morning.

“I would look really silly, but I had never done overnight hiking before and nothing gets you pack-fit like wearing a pack,” she says.

Despite her preparations, she found the first two weeks a huge challenge.

“Ninety Mile Beach is just a killer,” she says. “You’re just walking along the beach day after day.”

Te Araroa veteran Stuart Bilby says the first 1000km are the crux.

“Starting from Cape Reinga is a killer,” Bilby says. “It’s very repetitive and every step on the beach is the same – if there is any rubbing in your shoe, you will get blisters and a lot of people end up damaging their feet.

“My advice would be to start really slow, give your body time to heal. The ones who quit are the ones who are tough and push through the pain.”

Stacey says after two weeks her blisters had subsided, her fitness increased and she found her stride.

“People say if you can do the first two weeks you’ve got the whole thing in the bag. You get used to it and your pack doesn’t feel heavy any more. My back became super muscly and my calves and quads became huge.”

So what’s the best way to avoid the physical shock of starting the trail?

Lincoln University fitness consultant Jayne Smith says tramping on a variety of terrain and in all weather is the best way to train.

“You want to be doing lots of long-distance walks over varied terrain,” Smith says. “Start off with shorter walks, but build up to distances that exceed what you’ll need to cover on an average day on the trail.”

Developing a regime with a personal trainer can also be beneficial, she says.

On a long-distance hike, it’s ok to scoff salty, sugar-laden snacks that would otherwise be detrimental to your health

“A trainer will develop a sensible programme, allowing progressive adaptation of the tissues, tendons and ligaments so they can cope with the load they will be placed under.”

Marlies Dorrestein, who turned 60 while walking the South Island leg of the trail, went to a personal trainer three times a week, doing strength training, and yoga twice a week in preparation.

“On previous tramps, I’d get incredible knee pain,” Dorrestein says. “I wanted to prevent that, and after strengthening my legs I didn’t have any problems. It made a huge difference.”

Once your body has adapted to the physical rigours of trail life, something called ‘hiker hunger’ begins.

“At first I wasn’t very hungry,” Stacey says, “but after two weeks it really kicked in and I started missing real food. Initially, I just planned to eat basic food, but I started to get massive food envy and ended up buying a huge lot of Backcountry meals which I sent in supply boxes for later in the trail.

“My metabolism sped up like crazy. I had very carefully planned what food to take, but I still couldn’t get what my body needed. I was always hungry.

“Looking forward to food was often the thing that kept me going.”

By the time Stacey reached Hamilton, she’d lost 3kg.

Dorrestein lost 9kg on the trail. Already petite, she tried to put on weight before starting the trail in preparation.

“My metabolism sped up like crazy,” she says. “I had very carefully planned what food to take, but I still couldn’t get what my body needed. I was always hungry.”

Simon Kerridge, who completed the 4300km Pacific Crest Trail in September, lost a whopping 13kg during the four-and-a-half month trek.

Julie Stacey found having regular rest days was the best way to keep trail fit

“After about two weeks the hiker hunger got really strong and I was eating disgusting amounts of food,” Kerridge says. “It just became about getting enough calories. I’d eat chips and chocolate bars – nutrition went out the window until I reached a town.”
University of Otago human nutrition lecturer Dr Katherine Black says our metabolism increases with the amount of energy we expend and as our muscle mass increases.

She says having a deficit of calories and losing weight can lead to health problems, so regularly eating energy rich foods is crucial. That means chocolate bars and crisps can actually form part of a healthy diet.

“If you’re burning off the calories, then eating that kind of food isn’t detrimental to your health,” Black says. “The biggest difficulty will be eating enough. If you aren’t getting enough calories and you’re losing weight, your body starts to shut down with serious health consequences.”

Exercise can also suppress your appetite, so it’s important to eat regularly, even if you’re not hungry.

Although crisps have a high salt content, that’s not necessarily a bad thing on the trail, she says.

“Eating high-salt foods stimulates thirst and when you sweat you lose electrolytes, particularly sodium, so salt will help there.”

Black says electrolyte sachets probably aren’t needed, provided you’re getting enough salt in your diet.

Nuts and seeds are also energy-dense foods which are lightweight, snackable and can be added to meals to increase the calorie content.

“Nuts are a good source of protein and also provide a lot of healthy fats.”

High-energy milk powder can be added to meals to boost the amount of calories.

Dehydrated food is a good way to get fruit and vegetables, but Black recommends stocking up on fresh food while in town.

Another change that often happens to your body on a thru-hike is the amount of weight you’re carrying. Most people find they’ve packed too much at the start and take a few weeks to find the optimum pack weight.

Bilby says going ultralight was the best decision he made.

Black recently studied participants in the GodZone Adventure Race and found those who were continually snacking did a lot better than those who only ate when they felt like it.

Stuart Bilby said going ultralight made the trail significantly easier

“My base pack weight was 4kg,” he says. “I still had a full tent and sleeping bag and I wasn’t sacrificing comfort or safety. It makes walking easier and more enjoyable, and you don’t have to be quite so fit.”
Kerridge halved his pack weight on the PCT, from 20kg to 10kg.

“It made a huge difference,” he says. “Carrying a heavy pack is a vicious cycle – you walk slower and consume more energy, so you have to carry more food and water, which means your pack is even heavier.”

The other change that happens on a thru-hike occurs in the mind.

“My mind was really busy at first, but then it started quietening,” Stacey recalls. “Just listening to the sound of nature, it’s like therapy. It takes your mind away from the every day.”

Smith says the reason people feel so good is because that’s how active we are supposed to be.

“People talk about aiming to do 10,000 steps a day, but really we should be doing 30,000. If you’re walking every day you will feel better, your cardio fitness will be better and you’ll truly know what feeling healthy is about.”

But she says it’s important to understand it won’t all be a walk in the park

“Know that there will be tough times and you will have to dig deep and get yourself through,” she says. “This is when going back to simple things, like just putting one foot after another, can help. Break what is in front of you into smaller chunks.”