Southeast of Zurich, the Davos Klosters ski region has 110 pistes spread over 318km that are served by 61 lifts with a maximum vertical descent of 2,030m. The pistes are spread over both sides of this broad valley. The large Davos Klosters ski region is typically separated into six distinct areas including Parsenn Gotschna, Pischa, Rinerhorn, Jakobshorn, Madrisa and Schatzalp-Strela.
The Parsenn Gotschna area is known for the big descents, with up to a 12km piste from Weissfluh down to Kublis.
The Pischa area is known for it's freeriding where there are three freeride runs that are avalanche controled and well-marked. It is accessed b a ski bus from Davos Dorf.
The Rinerhorn area is popular with locals for its offpiste freeriding, especially the off-the-back routes. Extreme boardes will want to try the J Vonli leading to Sertig (a guide is recommended). It finishes at the Walserhaus Sertig where you can take the bus back to Davos.
After a long morning of ripping it up, you can find good on-mountain dining at both Bruhins Weissfluh-Gipfel and Berghaus Ericka Jatzhutte.
Davos is a larger town with newer block buildings and high-traffic. The smaller village of Klosters is the more typical quaint Swiss village that many find as a great base for a longer snowboarding vacation.
If you're up for some apres ski action, check out the Piano Bar, the Cabanna Club or the Ex-bar. To reach this area from Zurich, head southeast on Route A3 to Landquart, and then southeast on Route 28 into Davos.
Note: If you plan to head to Davos for snowboarding by train, here are two great options offered by the Swiss train system SBB. First, there is the discounted Swiss Transfer Ticket which provides a round-trip train ticket from an airport directly to the town near the ski area, plus 50% off any additional train or bus tickets. Second, there is the Snow-N-Rail ticket which provides a round-trip ticket from anywhere in Switzerland combines with a ski lift pass for as long as you need at a total 20% discount (see: http://www.sbb.ch/snownrail ).
Overall, Davos is the 38th most popular snowboard & freeride destination of all 68 snowboarding resorts in Switzerland.