Mt Binser Track

Overview

If you’re chasing a proper Arthur’s Pass sampler—river flats, beech forest, a tussock saddle, and a night in a backcountry hut—this loop delivers. The Casey Saddle–Binser Saddle route is a through‑feeling loop that starts and finishes at Andrews Shelter and totals about 24.5 miles (39.4 km) over 13–14 hours. Most parties take two days with an overnight at Casey Hut. It’s graded “Advanced,” and that’s fair: expect wet feet, a hefty climb to Binser Saddle, and some rough, wind‑thrown forest.

Route at a Glance

Day 1 typically runs Andrews Shelter → Hallelujah Flat → Casey Saddle → down to the new 12‑bunk Casey Hut (opened August 2020 on a terrace above the Poulter). DOC time is 6–8 hours, though strong parties sometimes shade that. Older maps still show the old hut site and a forest line—ignore them; the approach now keeps closer to the river flats.

Day 2 follows easy‑going river terraces and old vehicle lines down the Poulter to Pete Stream (4–5 hours), then turns up for the main event: a roughly 600 m climb through mānuka and open beech to Binser Saddle. Near the top the track can be messy with windthrow, but the line is findable. From the saddle, it plunges steeply to the Waimakariri River flats and pops out near Lower Farm Stream; figure ~3 hr 30 min for Pete Stream to the flats, then about 30 minutes on gravel road back to Andrews Shelter.

What You’ll Notice

This valley tells its own story. Terraced Poulter River flats are classic post‑glacial steps—old valley floors uplifted and then cut down again. Across from Aeroplane Flat, a big slip tied to a 1929 earthquake is still obvious, and on the hillsides you’ll spy swathes of 1981 windthrow. It’s not a “views every minute” track, but the open valley walking and the saddle feel wild and rewarding.

Best Time to Hike

Nov–Apr is prime. Streams drop faster, days are long, and travel is friendlier. In winter and the shoulders, expect snow and ice on the saddle and carry/know how to use alpine kit if conditions demand it. Summer brings insects—pack repellent and keep moving near rivers.

Tips, Tricks, and Honest Notes

• The turnoff near Pete Stream is subtle; watch for markers on the terrace rim, then the track firms up in scrub and beech.
• Streambed options from Andrews (or Casey) are only for low flows and can hold flood debris. Don’t force crossings after rain or snowmelt.
• Wasps are a known summer nuisance on the Waimakariri side—give any nests a wide berth.
• Casey Hut is first‑come, first‑served with standard backcountry fees; bring a contingency bivvy plan in busy periods.
• Want more punishment and a true summit? There’s a separate Mt Binser summit day mission from Mount Binser Road: steep, marked in the forest but unmarked above the bushline with a narrow, exposed ridge and avalanche terrain in winter/spring—only for experienced trampers.

Is it worth it?

Yes—if you’re after a real tramping loop rather than a polished “great walk” experience. The hut night, the big saddle, and the living geology/history make it memorable. If you just want quick alpine views, other shorter tracks in the park may scratch that itch with less work; but for a two‑day backcountry hit, this loop is a classic.