FATMAP difficulty grade
There are two ways to access the Swiss Traverse from the Hermit Meadows Campground.
The usual route is to climb up to the Swiss Glacier then up the Rogers-Grant Col.
However, if the couloir is too icy & you forgot the ice picks & ice screws, you can access Mt Rogers via its west ridge (described). From the campground, ascend right up the obvious ridge line of the moraine wall following the trail.
Continue up this valley until you find yourself under the south face of Mt Rogers.
Mt Sifton should be on your left the entire way.
At the end of the valley, climb up to the left towards the obvious col between Rogers & Sifton.
From here, continue up the ridge line to Roger's summit at 3169m.
Mostly 4th & easy 5th class climbing. Once on the summit, rope up for glacier travel & descend to the Roger's-Grant Col.
From here, it is possible to stay on the ridge proper but the climbing is steep & exposed.
An alternative is to skip the first pinnacle of the ridge by traversing below it on the north snow slopes.
A bergschrund may need to negotiated to regain the ridge. Once the ridge is regained, traverse the Swiss Peaks (Grant, Fleming, Swiss & Truda) by staying on the ridge proper the entire way.
The climbing is 4th & easy 5th class.
In fact, the down climbing is often more challenging than the climbing.
One single rope rappel is required to descend from the Swiss Peak. From the Truda-Hermit Col, there are two options.
If you've had enough for the day, you can descend scree & talus to the Swiss Glacier for an easy glacier walk back to the campground.
If you're still hungry for more, acsend back upwards to summit Hermit Mountain at 3044m & descend the SE ridge to the Swiss Glacier & onto the campground. Equip - single 60m Dynamic Rope, harnesses, helmets, alpine climbing boots (rock climbing shoes not req'd), crampons, ice axe, ice screws (if climbing the Swiss-Grant Couloir), glacier travel gear.