This weekend is supposed to mark the inaugural MotoGP round in India at the former Formula 1 venue at the Buddh International Circuit.
The event has already faced numerous bouts of uncertainty, as requested track works were only recently finished, and the homologation process has yet to be finalised.
Aprilia's Aleix Espargaro told Autosport recently that the riders are standing united on the subject of track safety and are due to inspect it themselves on Thursday, before voting on whether to race or not.
Most of the paddock was meant to fly to India today (Tuesday 19 September), but many have been turned away from flights having not received the necessary visa.
The factory Honda squad and both its riders, including eight-time world champion Marquez, are among this list.
Marquez posted on his social media: "Flight delayed due to lack of visa for India, so we're going to pedal for a little while," referring to a picture of himself on his mountain bike.
He now hopes to be able to board a flight to India on Wednesday, assuming his visa arrives.
Source: Autosport