The route was revealed as TfL launched its third public consultation, with the organisation keen to get approval for the project next year.
If the project is given the green light, construction could begin as early as 2020, with the first trains running by 2030.
TfL’s new plans include a number of amendments such as a new section between New Southgate and Seven Sisters that would see trains stop at Wood Green instead of Alexandra Palace and Turnpike Lake.
The plans also include a new section between Clapham Junction and Wimbledon, with trains stopping in Balham rather than Tooting Broadway.
Crossrail 2 would serve central London through 32 km of twin tunnels between Wimbledon in the south and Tottenham Hale and New Southgate in the north, connecting with existing national rail networks in Surrey and Hertfordshire.
Two previous TfL consultations on the project have seen it receive overwhelming support from local residents and businesses.
TfL will now seek views on proposed station locations, construction sites and service patterns. The consultation will close on 8 January.
Crossrail 2 managing director Michele Dix said: “This consultation gives people the chance to comment on where we are proposing to put station entrances, work sites and ventilation shafts needed to run Crossrail 2.
“As development of this vital railway continues, we will be taking on board feedback from the consultation to progress the designs for the project, so that we can open the railway by 2030.”