Not too long after my last journey has ended, I should start thinking about the next one. I enjoyed trekking so much that most likely I will include it as part of my journey again. Here are some interesting trekking that I have come up with (in no particular order):
John Muir trail - USA, California
This is a route I read about when I was in Thailand. It is one of the more spectacular segments of the Pacific Crest Trail (which is huge trail from Mexico to Canada). John Muir trail is 340 kilometers long and it takes about 2-3 weeks to trek. Highest point, Mount Whitney (4421 meters) is highest point in the contiguous United States). Mount Whitney on the other hand is just 123 km west of the lowest point in North America, in Death Valley 86 m below sea level. Most people trek it from Mount Whitney to Yosemite National Park but I would do the trip vice-versa. This route needs a permit & bear-proof container for food. Best time to do: July to September.
Cordillera Huayhuash - PeruMost people who want to trek in peru, go for the famous Inca trail. Huayhuash Circuit takes 10-14 days and is undoubtedly far more demanding than the Inca trail in the south of Peru. Most of the walking, and most of the campsites, are above the 4000 m treeline, so the landscape appears rugged and mountainous, affording views over very wide areas. The area is noted for its spectacular glacial lakes. Route has quite dangerous reputation because of armed bandits but situation was worse few years ago. Nowadays locals give armed escorts for some parts of the routes. Best time to do: May to September.
Snow lake - Pakistan There's a place in remote northeastern Pakistan that is so overpowering in its visual drama that a number of qualified observers have been willing to declare that this is The Most Beautiful Place in the World. The Place is improbably remote, a week's trek from the nearest human habitation. This can be indeed called as the Ultimate Trek and not too many take the gauntlet. Its highest point is "only" at 5151 meters, but about 5 of 21-28 days will be trekked on ice. Movement will be slow & frustrating and being roped with others is essential on crevassed areas. So it requires a group of people and several porters per trekker. Best time to do: June to September.
Torres del Paine - ChileThe Paine Circuit. The highest peaks lie clustered in an area only about 16 square meters, making the 112 kilometer Paine circuit perhaps the finest trek on earth in terms of sheer visual impact. It takes about 8–10 days to trek, plus two recommended side hikes totaling over 50 kilometers. Independent trekkers won't need a guide, but national park authorities do not permit solo trekking (so basically you need to team up with someone). Best time to do: December to March.
Several treks - NepalEven though I just came back from there, there would be so much still to see in Nepal. For example Everest Base Camp trek that was my strong alternative when I went there would definetely be worth of doing. Also I have found out that TRC is cancelled at the moment so if it does not return it would be possible to trek there again independently. Other tempting treks in Nepal would be trekking peaks such as Island and Mera. Island Peak (Imja Tse) is 6160 meters high and takes about 20 days. Mera peak is 6476 meters high, takes about 22 days and it is highest trekking peak in the world. They are both very close to Mount Everest. Of course there are lots of other treks there too, like Dolpo and upper-Mustang trek though both are expensive ones. Best time to do: September to November or March to May.
Ruwenzori mountains - UgandaApart from being one of the main sources of the Nile, they are among the strangest and most mysterious mountains in the world. Finally, on top of everyting, one finds eternal snow and glaciers at an altitude of more than 5000 meters above sea level, which makes you forget, that you are in the heart of tropical Africa. Takes about 4-10 days to trek. Best time to do: All year.
Haraz mountains - YemenMany visitors have suggested that the majestic spirit of the mountains can be felt more intensely in Haraz Mountains than anywhere else. Most travel outside the capital will require a travel permit (tasriih), which must be applied for a number of days in advance and will be examined at checkpoints along the way. Due to tribal violence in Yemen, travel to Yemen is not recommended at this time. Best time to do: October to February.
Alpamayo Circuit - PeruTrek round Alpamayo, known to mountaineers as one of the most beautiful peaks in the world. This trek is in the Cordillera Blanca (White Mountains), arguably the best hiking destination in the world. Alpamayo Circuit is over 140 kilometers long. You won't see many hikers there as the logistics of getting in and out are challenging. There are many passes (4600 - 4900m) and it takes 13-15 days to trek. Best time to do: June to August.
Larapinta Trail - AustraliaThe Larapinta trail is an extended walking track in the Northern Territory, Australia. Its total length covers 223 kilometres (about 14-15 days) from East to West, with one end at Alice Springs and the other at Mount Sonder, one of the territory's highest mountain and provides fine views of an unexpectedly dramatic, red-rock landscape. Best season to do: May to August.
Overland trail - Tasmania The Overland Trail is an incredibly popular 80km+ hike through Tasmanian World Heritage mountains. Most Australian bushwalkers (trampers, backpackers, hikers) want to walk the overland trail from Cradle Mountain to Lake St. Clair at least once in their lives. It takes only about 5-7 days to trek. Best season to do: Unknown, it rains a lot every year.
Gila Wilderness - USA, New MexicoEstablished in 1924 as the first forest wilderness preserve in the world, the Gila Wilderness Area comprises over half a million acres covering more than 1,000 square miles in southwestern New Mexico. More than 2400 kilometers of hiking trails lace the forest, ranging from a base elevation of 1300 meters in the high desert to peaks that almost touch 3350 meters. There are lots of trails so depends about the route how long it will take. Best time to do: Generally hikeable year-round, although the lower elevations will be uncomfortably hot in mid-summer
Salar de Uyuni - BoliviaSalar de Uyuni is with its 10 582 square km the world's largest and highest (3600m) salt desert. Photograpers flock here to capture the unique landscape. Scenerly there looks like it's from other planet. It is often visited as part of a 3 or 4 day tour of South West Bolivia. This is not a trek though but it could be easily combined with some trek in Bolivia or with one of the treks in Chile. Best time to do: April to October.
Others
Some other trips that I have thought about have been K2 base camp in Pakistan (quite difficult and expensive), Cocos island in Costa Rica (impossible to get permit unless you're doing diving trip there) and coast to coast road trip in USA (I don't have valid driving license so I have to keep postponing this).
It's a tough choice, wouldn't you say so? :)