You can wander up lush green mountain trails, in the very footsteps of those early travellers. Test your endurance trekking the unknown paths each leading to a paradise. Acquaint yourself with a land that is bizarre at the same time fascinating. With its endless intriguing trails, mountains, flora and fauna, Sikkim offers you a dream - a voyage of adventure and discovery.

Rafting is a later entrant of adventure sport in Sikkim. Rivers Teesta and Rangit  offer long stretches which are ideal for safe rafting. Teesta has been graded on the International scale at Grade 4. The icy cold waters of the rugged Teesta have a series of rapids with varying intensity and character. It offers one of the finest rafting stretches in the world. Rangit, a tributary of the Teesta, has more turbulent waters and offers a challenge to more experienced rafters experienced rafters. 

On both the rivers, the riverbanks have deep forests, with some patches of terraced cultivation, and small villages. Plenty of white sandy beaches exist, offering good campsites. Rapids of classification 2 to 4 are interspersed with placid floats, making rafting an enjoyable experience. Facilities for overnight River beach camping is available. Beginners as well as experienced adventurers can enjoy river rafting trips .

The captivating landscape, with an incomparable diversity of flora and fauna: India is regarded as the ‘trekkers’ paradise’ and, indeed, is a refreshing treat to the trekkers. India is the ultimate destination for a trekking holiday, offering everything from short and easy excursions to the long challenges of the snowy peaks, invoking visions of the spectacular Himalayas, the lush meadows, green woodland and fragrant orchards Technical climbing experience is not necessary as most of the trek routes are between 6000 and 14,000 feet. Camping & trekking equipment is available on hire from the tourism department and from reputed travel agents. The ideal time to go trekking is mid February to late May and between October and mid December.

Sikkim has to offer a number of fascinating trekking routes to enterprising trek enthusiasts. The best time to trek in these parts of the Eastern Himalayas is between mid- February to May and again from October to December. The treks pass by beautiful gompas, simple but colourful hamlets and through so fascinating alpine forests full of a rich variety of flora and fauna. Yuksom is an ideal take-off point for trekking. This point is invariably used as a centre of climbing and trekking expeditions by the Himalayan Mountaineering Institute, Darjeeling. The trek to Bakhim is an unforgettable B experience. Dzongri at an altitude of 3,962 metres, offers the visitor an excellent and unobstructed view of the Khangchendzonga Massif. It also provides a trekker with superb views of sunrise and sunset.

The Sikkim Himalayas, the epitome of the world's mountains, encompass a wonderland, which for sheer beauty and magnificence remains unbeaten elsewhere in the globe. In the southwestern part of Sikkim, in the main Himalayan range, lies the majestic Khangchendzonga or Kanchenjunga, rising to a staggering height of 8,585 m (28,169 ft) above sea level (7,365 m) and Sinolchu (6,887 m). Mountaineering expeditions, unlike trekking, require more planning and paperwork as clearance is required from the Indian Mountaineering Foundation, New Delhi. Besides these the local governments also impose royalties on certain peaks.

The best season to climb in Sikkim is from May to October.

Mountain Biking is another adventure sport that has been recently introduced in Sikkim. Most of the roads in Sikkim are negotiable by mountain bikes. This sport is definitely poised to become popular in Sikkim in the near future and it is being promoted in most parts of North Sikkim & West Sikkim The popular routes for Bikers starting from Gangtok are:
Phodong - Rangrang - Dikchu - Makha - Singtam or
Gangtok - Lingdum - Rumtek - Martam - Sang - Makha - Singtam - Singchuthang - Temi Tea Garden - Ravangla - Dentam - Sombarey.

Another popular desired route in East Sikkim is :
Gangtok - Bhusuk - Assam Lingzey - Pakyong - Rorathang - Rhenock - Rongli - Aritar. 

Yak Safari is an unforgettable experience organized from Dzongri in West Sikkim onwards by Sikkim Tourism or by travel agencies on prior booking.

About Yak: Yaks are bovine mammal. It is oxlike in build, with short, thick legs, humped shoulders, large upcurved horns, and a thick coat that hangs down to the ankles. Wild yaks were formerly found from Kashmir to West China, but were so extensively hunted for meat and hides that they now survive only in isolated highlands at elevations above 14,000 ft (4,300 m). They live in herds numbering from 10 to 100 animals, mostly females and young led by a few old bulls; males are mostly solitary.

Yaks have been domesticated for centuries, and the domestic form has been introduced into other parts of central Asia. The wild yak may attain a shoulder height of 65 in. (165 cm) and have horns 3 ft (90 cm) long; its coat is dark brown. The domesticated yak is smaller, with short horns; its coat, which may be long enough to reach the ground, may be black, brown, reddish, piebald, or albino. Yaks can live on vegetation so sparse that it cannot support other domesticated animals. The domestic yak is a source of milk, butter, meat, hair (for cloth), and leather and is also much used as a beast of burden.