The important places in the Manali to Leh-Ladkh route are

Manali – Kothi – Marhi – Rohtang Pass – Gramphu – Koksar – Sissu – Gondla – Tandi – Keylong – Jispa – Darcha – Patseo – Baralacha La – Bharatpur – Sarchu – Gata Loops – Nakila Pass – Whisky Nullah – Lachung La – Pang – Moray Plains – Debring – Tanglang La – Rumptse – Upshi – Karu – Leh – Khardung La

For the trip story, please read my previous post