La Marmotte

Online entry on the event's official website is possible but demand greatly exceeds the limited number of places available (approximately 7000). In 2012, the event entry website received more than 6000 individual online applications in one day[1] and was forced to suspend further online applications. In 2013, entries for the Marmotte Gran Fondo event opened at midnight CET on 30 November. The site was intermittently unusable as the number of requests exceeded what it was capable of handling. Numerous bugs were also apparent as some users were only able to enter by registering as new users.

A limited number places are available to groups, organised sporting holiday companies and individuals who enter the Trophee de l'Oisans, a series of cyclosportive events held in the Oisans region over the previous week, starting with the Vaujany Master ride.

Owing to the sheer number of participants, a staggered start is necessary, with riders batched by race number and those with lower race numbers departing first. The first batch of riders depart at 0700 CET. Priority race numbers are given to a selected number of elite riders who have posted very good times in previous attempts or can provide evidence that they are capable of competing with the best riders. Non-elite riders that have posted good times in the past are also batched in the lower number range. Since timing does not begin until the rider has crossed the start line, theoretically there is no disadvantage to starting from the back of the field. However, since the faster riders depart first it is potentially advantageous to be batched in the earlier groups and take advantage of pelotons moving at greater speeds. In addition, the sheer number of participants can lead to congestion on the roads and at feed stations.

Electronic timing chips given to each rider record the finishing time and split times at various points around the course.

From 2010 the descent of the Col du Glandon was neutralised to discourage riders from descending too recklessly and endangering themselves and other riders. The descent would usually take about 30–35 minutes.

Major feed stations are usually placed at the summit of the Col du Glandon, start of the Galibier climb (2 km outside Valloire), summit of the Galibier and at the foot of Alp d'Huez. Intermediary water stops are scattered throughout as are a limited number of temporary toilet facilities.