Early in the morning today your driver will pick you up from your home/hotel in Delhi (or from the airport/railway station) and drive you to Haridwar. After checking in at your hotel and freshening up, proceed to visit Har ki Pauri for a dip. You may also wish to view the Ganga Arti here at sunset.
Check out in the morning and drive to Rishikesh. After checking in at the hotel, proceed for sightseeing of Rishikesh. Visit Ram Jhula, Laxman Jhula and Bharat Mandir. For those interested in adventure sports, it is possible to try activities like ziplining, bungee jumping etc. today on direct payment basis.
Take a sightseeing tour in and around Mussoorie today. Visit Mussoorie Lake, Mall Road, Kempty Falls etc. You can also visit Jwalaji Temple on the way to Kempty falls, but please note it involves a fair amount of walking/hiking and may not be suitable for all. In Mussoorie you can also walk around and visit historic churches like Christ Church.
Check out of the hotel early in the morning and begin the drive back to Delhi. On reaching Delhi you will be dropped at your hotel/residence or at the airport/railway station as per your onward plans.