Race	Average Race Time	Technical difficulty	Terrain	Requirements	Finisher criteria*
	06:30	Some difficulties	Technical and sometimes steep path; scree slopes are not uncommon	Experience of hiking in the middle mountain; capable of being autonomous for 4 or 5 hours; the knowhow for confronting difficult conditions (rain, wind, cold (< 0°C), snow)	300
	10:30	Some difficulties	Paths sometimes steep; a few stone fields; altitude 2000m	Experience of hiking in the middle mountain; capable of being autonomous for 4 or 5 hours; the knowhow for confronting difficult conditions (rain, wind, cold (< 0°C), snow)	340
	22:00	Quite difficult	Paths sometimes steep; some areas with stone fields; altitude 2500/2600m	Experience of hiking in the middle mountain; capable of being autonomous for 4 or 5 hours; the knowhow for confronting difficult conditions (rain, wind, cold (< 0°C), snow) day and night	390
	32:00	Difficult	Unclearly marked paths; very long ascents and descents; exposed passages secured with a rope; use of hands necessary to balance oneself; remote itinerary; altitude 2700m ; few refreshment points	Elementary experience of the mountains: capable of being autonomous for 5 or 6 hours; the knowhow for confronting difficult conditions (rain, wind, cold (< 0°C), snow) day and night	390
	40:00	Quite difficult	Paths sometimes steep; some areas with stone fields; altitude 2500/2600m	Experience of hiking in the middle mountain; capable of being autonomous for 4 or 5 hours; the knowhow for confronting difficult conditions (rain, wind, cold (< 0°C), snow) day and night	420
	136:00	Very difficult	Often without paths; exposed difficult terrain; tricky grassy slopes; some easy rock climbing; glaciers and névés with a risk of sliding; very remote itinerary; altitude > 3000 m; no refreshment points	Good experience of the mountains; ability to orientate oneself; capable of being autonomous throughout the day; the knowhow to confront very difficult conditions (very heavy rain, abundant snow, high winds, intense cold  <-10°C ) day and nigh

* calculated in relation to the time limit authorised by the organiser and which addresses more particularly the slower runners.
It supplies a performance index showing the minimum level necessary  in order to finish the race within the given time. By comparing the 'Finisher' criteria of their own performance index, each participant can judge their capacity, or not, to finish the race within the authorised time.