The Ultra Trail du Mont Blanc is a packed week in the running calender, hosting a number of the world’s most gruelling trail races leading up to the 171km namesake itself. Here is everything you need to know to navigate the week and monitor the media as the winners cross the lines.

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All times and dates are local (GMT +2)

TDS (Traces des Ducs de Savoie)

Start in Courmayeur: 8am Wednesday 29th of August (delayed from 6am start due to weather)

First men’s finisher estimate: 10:30pm Wednesday 29th of August

First women’s finisher estimate: 00:30pm Wednesday 29th of August

Cut off: 16:00 Thursday 30th of August

Distance: 121 kilometres

Total vertical gain: 7,300 metres

Highest point above sea level: Col Chavannes, 2,603m

UTMB: can the Chinese burst onto international trail running scene with podium finishes in France?

YCC (Youth Chamonix Courmayeur)

Start in Courmayeur: 10am Wednesday 29th of August

First finisher estimate: 11:30am Wednesday of August

Cut off: 14:00 Wednesday 29th of August

Distance: 15km

Total vertical gain: 1,000m

Highest point above sea level: 2,100m

UTMB: Hong Kong artist Elsa Jean de Dieu draws on running partner for energy in bid for top 10

OCC (Orsieres Champex Chamonix)

Start in Orieres: 8:15am Thursday 30th of August

First men’s finisher estimate: 1:30pm Thursday 30th of August

First women’s finisher estimate: 2:45pm Thursday 30th of August

Cut off: 22:45 Thursday 30th of August

Distance: 55km

Total vertical gain: 3,500m

Highest point above sea level: Les Tseppes, 2,065m

UTMB: Hong Kong’s good Samaritan has unfinished business after stopping to save runner’s life

CCC (Courmayeur Champex Chamonix)

Start in Courmayeaur: 9:00am Friday 31st of August

First men’s finisher estimate: 8:30pm Friday 31st of August

First women’s finisher estimate: 9:45pm Friday 31st of August

Cut off: 12:00 noon Saturday 1st of September

Distance: 101km

Total vertical gain: 6,100m

Highest point above sea level: Tete de la Tronche, 2,584m

UTMB: how is Hong Kong out-gunning the US, UK and Italy?

UTMB (Ultra Trail du Mont Blanc)

Start in Chamonix: 6:00pm Friday 31st of August

First men’s finisher estimate: 2:45pm Saturday 1st of September

First women’s finisher estimate: 7:30pm Saturday 1st of September

Cut off: 16:30 Sunday 2nd of September

Distance: 170km

Total vertical gain: 10,000m

Highest point above sea level: Col des Pyramides Calcaires, 2,565m

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