Start early and keep this section light and efficient, because the mountain weather and traffic both get less forgiving as the day goes on. Sissu Waterfall is best in the morning for clearer views and fewer people; expect a short, easy walk from the parking area, around 45–60 minutes total if you want to linger for photos. In May, carry a light jacket even if Manali feels warm—Sissu can still be chilly, and the spray near the falls makes it feel colder. From there, make the quick hop to the Atal Tunnel North Portal for the classic “we made it to Lahaul” moment. It’s not a long stop—20–30 minutes is enough—but it’s worth pausing to take in the scale of the tunnel entrance and the dramatic shift in landscape on this side of the pass.
After the tunnel area, don’t rush back straight away. The nicest part of this day is the slow drive along Keylong Road / Lahaul River Valley between Sissu and Keylong, where the road opens up to wide river bends, stark mountains, and little pull-offs for photos. Plan 1.5–2 hours for the drive and casual stops, especially if you want to walk down to the river or just sit somewhere quiet for tea from a roadside dhaba. This is one of those stretches where the scenery is the activity, so leave room for wandering rather than trying to “cover” everything. If you’re self-driving, go carefully on blind curves and don’t overestimate travel speeds—mountain driving always takes longer than maps suggest.
On the way back, stop in Old Manali at Cafe 1947 (Manali) for lunch. It’s a reliable place to break the day, with a nicer sit-down feel after the high-altitude driving, and a good spot to order a proper meal instead of grabbing something on the road. Budget roughly ₹700–1,200 per person depending on what you order and whether you add drinks. Try to keep this to about 1–1.5 hours so you still have time for the evening stop without feeling rushed. If you can, aim to reach Old Manali before the late-afternoon crush; parking gets tighter and the lane traffic slows down.
Leave the city behind again and head up to Sethan Valley for the quieter, more atmospheric part of the day. This is the best place on your route for sunset light, with a calmer feel than the busy Manali side and wide Himalayan views that really open up in the evening. Plan 1.5–2 hours here so you can do a short walk, breathe in the mountain air, and just let the day slow down. Finish with a short stop at Hamta View Point / Sethan Meadows for the last photos and the best evening glow before heading back. It’s usually cooler and windier up there, so keep a warm layer handy, and if you’re returning after dark, leave enough buffer for the downhill drive—mountain roads here are beautiful, but they’re always slower than they look.