Soon you will be able to drive from Kanpur to Prayagraj in less than 2 hours ~ currently it takes at least 3.5 hours.
Kanpur Prayagraj 6 lane NH2 will be completed by May 2022.
145kms...
more... highway starts at Chakeri in Kanpur & ends at Kokhraj in Prayag.
Source- The UP Index