What are some 5/6 days winter trek routes in Sikkim? Can I get a guide and camping equipment at local agencies?

During the season, the bulk of treks are in Sikkim. There are few options for winters as most roads are blocked during this period. In the season, it is still possible to follow such treks. You got a look.

i. Goecha La Trek
The Himalayas may sound attractive and cheerful, but the environment is harsh, and this walk is known to be moderate to challenging. Goecha La is one of the most popular trekking destinations in Bengal and North-East Bengal, and it is the proud Sikkim and high range.
Altitude: 4939 meters
Trek duration: 11 Days
Grade: Moderate to Difficult
Best time to trek: The majestic razor-sharp snow-clad mountains are best visible in the months of March-May and mid-Sept to November
Base Camp: Yuksom

ii. Rhododendron Trek
One of the most up to minute treks is Rhododendron Trek. This trek takes us to fragile Himalayan elegance, and leads us to a fragrant broken road, full of colorful and size flowers.
Altitude: 1728 meters
Trek duration: 10 to 11 days
Grade: Easy to Moderate
Best time to trek: April to mid-May
Base Camp: Yuksom

iii.  Dzongri Trek
Lush valleys and large panoramic views of the city can take you away. The path parallels the colorful flowers and trees of picturesque trails, and scenic valleys including the Rhododendron, magnolia, maple and oak forests.
This path is the best way to newcomers without any hard work when sailing to amazing locations.
Altitude: 4020 meters
Trek duration: 8 to 9 Days
Grade: Easy to Moderate
Best time to trek: Mid-March to May and September to November
Base Camp: Yuksom