Night Marathon Spa-Francorchamps: Course, Elevation & Route Profile

Course & Elevation

One lap is the full Grand Prix configuration: off the start straight into the La Source hairpin, down through Eau Rouge and straight up the Raidillon – 78 metres of climb in the first 1.6 kilometres, touching 13.6 percent at its steepest – then the Kemmel straight, Les Combes, Malmedy, Bruxelles, down through Pouhon and Fagnes, over Stavelot and Blanchimont and back through the Bus Stop chicane.

You run 6 laps of that, some 1038 metres of climbing in total. The course sits between 365 and 472 metres, and what the profile mostly shows is the absence of flat: barely seven percent of the distance rates as level, 47 percent goes up and 31 percent down. A racing circuit is built as a road surface, not as a running course – it climbs or falls almost continuously.

And then there is the night. A circuit has no street lighting; you run in the cone of your own headlamp between the barriers, with the pit boxes and grandstands as the only reference points. In early October the Ardennes air already sits cold over the track, and a hundred metres of elevation within one lap is a temperature difference as well.

Pacing Strategy

A marathon with more than a thousand metres of climbing spread across six identical laps demands a completely different approach from a road marathon. Expect thirty minutes to over an hour slower than your flat marathon, and plan in laps rather than in splits.

The first rule: the first two passes of the Raidillon run themselves too fast. At kilometres 0.1 and 7.1 you are fresh, the field is together, and 78 metres feels short. That is exactly where the collapse that shows up on lap four is created. Take the first two climbs deliberately easy, walking the steepest section briskly if need be.

The race is decided between laps four and five, kilometres 21 to 35. By then your quadriceps have braked the long descent through Pouhon and Fagnes four times, and from there it comes down to whether you can still run that descent or only survive it. Eat and drink strictly to a lap plan, not to feel. And expect cold: a marathon starting at nightfall finishes in the middle of an Ardennes night, several degrees colder than at the start.

Training plan for Night Marathon Spa-Francorchamps: 12-week build

Reckon on three and a half to more than six hours. The demand is a mountain marathon's: sustained aerobic work across the whole evening, six anaerobic climbs and – decisively – six long descents totalling more than a thousand metres of eccentric work.

That eccentric share is what separates this course from a road marathon and what most preparations leave out. Muscle damage from downhill running is cumulative and only shows after several repetitions; train uphill only and you will come apart on lap five.

So build on two pillars. First, long runs over a repeated loop with a climb and a descent, three to four hours, at least twice in the final six weeks – the repetition is the stimulus, not the distance. Second, dedicated downhill running from ten weeks out, starting at two to three kilometres of descent a week and building slowly; it is the only way to prepare the quadriceps for six descents.

The conditions deserve their own rehearsal. A night marathon in the Ardennes in early October means six to twelve degrees, often fog or drizzle, no lighting whatsoever, and three to six hours inside your headlamp's beam. Do at least one long run entirely in the dark in full race kit, check battery life against your expected finishing time plus an hour, and plan a change of clothing or an extra layer for the last two laps.