But Giggs believes Chelsea still have a chance of catching the Manchester clubs, despite the champions trailing by six points already.
Chelsea missed the chance to go level on points with City on Saturday as they fell to a 1-0 defeat against Pep Guardiola’s side at Stamford Bridge.
But Giggs hasn’t written the Blues off just yet.
“I think it is too early to say it’s a two-horse race in the Premier League,” Giggs told Sky Sports.
“I’ve been in India so I didn’t see Manchester City win at Stamford Bridge but you’ve got to take into account Chelsea’s week, going to Stoke then getting a hard-fought win at Atletico Madrid.
“I think Chelsea will still be in the mix but you’ve got to say City and Manchester United have been impressive and are the teams to beat.
“I think we are seeing the managers, Pep Guardiola and Jose Mourinho, imprinting their own visions on their teams.
“You see a bit of both at United, with a really strong defence but then scoring plenty of goals as well.
“The Southampton game was a good example, playing really well in the first half but then shutting up shop in the second.
“We’re still waiting to see if City can win games when they don’t play as well, so the real tests await for both sides.”
