Planning a Mountain Ultramarathon Training Block That Lasts

A mountain ultramarathon asks more from a body than a road event of similar distance ever could. Long climbs drain the quads, steep descents punish the quads again on the way down, and the terrain rarely stays predictable. A well-shaped training block lines up every part of your life for the months between now and the start line, so the work done in week one still matters in week sixteen. Without that long view, the aerobic engine is built but the ankles are fragile, or the legs are strong but the fuel plan falls apart in hour nine.

In Australia the picture has its own texture. Race calendars run warm through autumn and spring, summer training means planning around heat and the bushfire season, and the best mountain days often sit a long drive from Sydney or Melbourne. Whether you are aiming at the Ultra-Trail Snowy Mountains in the Snowies, the Six Foot Track Marathon across the Blue Mountains, or a quieter event in the Victorian high country, the framework below is built for runners who want to arrive at the start line in one piece.

Working Backward from the Start Line

The first decision is the race itself, and from there everything else flows in reverse. Pick the date, mark it on the wall, and lay the block out in clear thirds: a base-building phase, a specific-strength phase, and a sharpening phase. For a major A-race like Ultra-Trail Snowy Mountains in late February or early March, the base phase might run across winter, the specific phase covers spring, and the final sharpening sits in the last four to six weeks before the gun.

Honest goal-setting shapes the rest of the plan. If your aim is simply to finish within the cutoff, the block can be more conservative and the long run tops out sooner. If you are chasing a sub-twelve-hour finish on a course with more than 4,000 metres of climb, the volume curve gets steeper and the longest training days stretch longer. Either way, build in three recovery weeks for every ten to twelve weeks of work. Australian schedules reward this thinking, because the temptation to race every weekend from the Six Foot Track to the Hume and Hovell is real, and a heavy race calendar quietly steals the kind of block that produces breakthroughs.

Laying the Aerobic Foundation

The base phase is where the block earns its keep. Easy running, gradually rising from a comfortable weekly volume to something around sixty to seventy percent of your race-week target, anchors everything that comes later. Heart rate matters more than pace here, and most of these runs should feel like a controlled conversation, not a chase. If you live in Brisbane or along the NSW coast, humidity will pull heart rate up before the legs feel tired, so treat effort as the metric, not pace on the watch.

Two specific sessions sharpen the base without overreaching. A steady tempo at marathon effort, around sixty to ninety minutes once a week, raises lactate clearance and gives the legs permission to move faster without recruiting extra fibres. A second, easier session of hill repeats on a moderate grade builds climbing strength at low cost. Both fit inside a long Sunday run in the Yarra Ranges or around Canberra's bushland, where the terrain does half the work for you.

In smoke-affected summers, swap the long run to a treadmill or sheltered gym rather than skipping it altogether. A few summers ago, the air quality across the ranges was unfit for hard efforts for weeks at a time, and the runners who adapted their venue kept their block intact. The consistency matters more than the scenery.

Stressing the Climbs and the Descents

Specific strength is where the mountain character of the race enters the plan. Vertical gain is built through long climbs with light poles and steady cadence, then later through heavy legs and tired quads. If your race includes sustained climb, as Bogong to Halls Gap does, or the relentless up-down of the Six Foot Track, the legs must learn to keep firing when the heart is already working. A weekly hill session that targets around 1,000 metres of vertical gain in the specific phase prepares them.

Descents deserve equal respect, because downhill running breaks more runners than the climbs do. Short, repeated downhill repeats on a steep fire trail teach the quads to absorb without seizing, while long, rolling single-track at race pace trains the ankles and the lower legs. Australian runners have a quiet advantage here: trails around Mt Buller and Mt Stirling in Victoria, the Blue Mountains near Katoomba, and the Overland Track approaches in Tasmania all deliver real mountain character without needing a flight to the Himalayas.

Run them often enough, and the legs stop asking what is around the next corner. The block stops feeling like a sequence of workouts and starts feeling like a slow, steady education in the terrain you will race across.

Rehearsing the Race-Day Picture

The specific phase is also where gear, fuel, and pacing get rehearsed until they feel ordinary. Long runs over five to seven hours should mirror the race as closely as possible: the same shoes, the same pack, the same bottles, the same snacks, the same pacing intent. Australians training for alpine races need to plan around water availability, which can be scarce in the high plains of Kosciuszko National Park in a dry summer. Practice running with the full kit weight of two litres, mandatory layers, and the same emergency supplies the race organisation demands.

Heat is a separate rehearsal. Even a March race like Ultra-Trail Snowy Mountains can hit warm afternoon temperatures in the valleys, and runners from cooler climates often underestimate the slowdown. Train two or three long runs in the warmest part of the day during the Australian summer, sweat deliberately, practise electrolyte dosing, and learn the feel of running at a slightly higher heart rate than usual.

Bushfire season also reshapes the plan. When Total Fire Ban days or poor air quality strike the ranges, swap the long run to a shaded rail trail or a flat bike path rather than chase vert on a smoky slope. The block absorbs the season, not the other way around, and the runners who protect their lungs during these stretches tend to hold their form into autumn.

Tapering and Absorbing the Load

The final two to three weeks of the block should feel strangely quiet. Volume drops by roughly forty to sixty percent, intensity stays in short, sharp touches, and the legs begin to remember freshness. This is also when the small problems tend to surface: a niggle from a long descent, a sleep debt from work travel, a head cold that arrived on the plane from a Melbourne business trip. Treat each as a signal, not a setback, and let the taper be flexible enough to absorb them.

Recovery weeks inside the block deserve the same respect. Every third or fourth week should drop volume by a clear twenty to thirty percent while keeping a couple of crisp sessions, so the legs arrive at the next build phase fresh. For runners targeting races further from home, consider a short altitude camp at Falls Creek or a long weekend in the Snowy Mountains during the specific phase, both for the legs and for the head.

When taper week arrives, the confidence should already be there. The block has done its work, and the body knows what is coming.

The cleanest first move is to pick your race, mark the date, and sketch the three phases on a single page before another kilometre is run. From that map, the rest of the block writes itself one week at a time.