Getting there

On the Great Alpine Road just before the Mount Hotham Ski Resort when traveling from Harrietville. Opposite Diamantina Hut. No carpark park on side of road. Often multiple other cars parked as it's a popular walk.

Maps

Which maps cover the area?

Maps of Mount Hotham & Mount Feathertop

Route/Trail notes

From the trail head opposite Diamantina Hut follow the ridge a high or low route can be taken around the first knoll at the head of the Bon Accord Spur both routes meet up on the otherside heading into the saddle named the big dipper. The trail will then follow the ridge on or just below the ridge till the trail junction just below Little Mount Feathertop. The trail left leads to Federation Hut and the Bungalow Spur, the trail straight ahead Little Mount Feathertop which offers a great view of Mount Feathertop and the right hand trail leads onto the summit of Mount Feathertop. The trail then begins to climb Mount Feathertop ignore the signed turn off to the Tom Kneen Track this leads to a spring, the Melbourne University Mountain Club (MUMC) Hut and the North West Spur and continue up to the summit along the narrow and exposed ridge line. Once the summit is reached retrace your steps back along the Razorback Ridge.

The whole ridge will be coverd in snow during winter, and I advise not to tackle it from June - October if not experienced. Massive cornices appear on the ridge and avalanches are a daily occurence, the ridge is exposed and takes the full blast of wind, come prepared.

Permits/Costs

Do you need any permits? What's the cost?

Free

Other References

There is a good description of this walk, done in late December, with lots of photos in Photodiary of a Nomad - Mt Hotham Day Walks . 

https://www.parks.vic.gov.au/places-to-see/sites/the-razorback-walk