Last Updated: 8th Jan 2024
Cass-Lagoon Trail
Submitted by Mike Steel
Last Updated: 8th Jan 2024
Open
Grunt Factor: 61 ?
Gnarl Factor: 57 ?
33.5km
1340m
1400m
1326m
Last Updated: 8th Jan 2024
Submitted by Mike Steel
Last Updated: 8th Jan 2024
Open
Grunt Factor: 61 ?
Gnarl Factor: 57 ?
33.5km
1340m
1400m
1326m
Back country - remote
Point to Point (one way)
Undulating, some big hills
Native bush
Riverside
Open ridges/tops
Moderate Single Track
Technical Single Track
Average Uphill Gradient: +10.4%
Average Downhill Gradient: -8.9%
Login as a VIP to see the trailhead information.
7:30
Slow
5:30
Moderate
4:00
Fast
The Cass-Lagoon track is a popular 2-3 day tramping track that's also a very pleasant trail run. It follows well-marked trails connecting two sheltered valleys, passing over two alpine saddles, with forest, alpine scrub and stream sections, numerous huts, and increasingly open and wild running in Cass stream near the end. Being east of the divide, and with no major river crossing issues, it can be run for much of the year.
The track heads up through beech forest and then breaks out to give superb views nearer to Lagoon saddle, before descending into the Harper River system. It's a pleasant run down through here - the trail in this section is part of the Te Araroa Trail, however you leave this when Hamilton Creek joins in - cross a left over a bridge and head a short distance up Hamilton Creek to the spacious Hamilton Hut.
From there, the trail grinds its way up valley, which becomes increasingly steep as it leaves Hamilton Creek (this is the one place you won't be running!) then eases off before Cass Saddle. From here it's a delightful descent on fast trails down to the Cass river, with some river crossing and running on faint trails across river stones to follow. Eventually a marker guides you over a stopbank onto a 4WD track to follow an obvious long straight line of pine trees that leads to your bike (or second car).
Tarns, views of the southern alps, mixed terrain, sheltered valleys, two low-alpine saddles
Parking at the Cora Lyn end seems relatively safe since it is off the main road and near a house.
16 km
18 minutes
Unknown
No
Moderate.
If you instead run from the Cass end, be careful not to get slightly lost at one particular point (several people have!) - it's where the Harper River and Long Creek join (take a map) - so if you are heading UP the Harper River you need to turn right at this junction. Also, whichever direction you are heading make sure you don't start running down the Harper river after the junction with Hamilton Creek (consult the map if in doubt).
Very patchy.
Long-sleeved thermal top, Seam-sealed waterproof jacket, Personal Locator Beacon (PLB), Whistle, First aid kit, Extra food for emergencies, Survival blanket, Cellphone, Compass, Map
Plenty of water the whole way in streams and at huts
Can be impassable due to heavy snow - you can see if Cass saddle (highest point) is clear of snow from SH73 near Cass. Also near there, check the level of the Cass river - it's usually pretty low but after heavy rain it could be an issue.
Trail Legend
Fastest Known Times (FKTs)
You and Cass-Lagoon Trail
As a VIP member you can record private notes for this trail, see all of your times and more.
Already have an account? Login now
Such a good day out. Amazing conditions despite the average weather report. Track to ourselves. We are blown away by people being able to do this in 5 hours..... We fast walked the hills, ran the flats and downhills. Took lots of stops for photos. Some areas weren't super runnable with more technical terrain. Lost markers at some points down from cass saddle and near the end of the cass river resulting in a bonus 3km. Looking forward to beating our time once our trail experience improves.
December 2
Thoroughly enjoyed this run. So much of it was runnable! Great variety and the excessive number of huts was delightful. There was a fair amount of treefall which added maybe 15 minutes of delay. We were a party of three. One person tried to hitch back to the start, and as a hedge we also sent one person on a bike. The hitchhiker failed completely so good job we had stashed the bike!
October 9, 2022
Great variety with formed trails and river bed travel. The section between Cass Saddle and Hamilton hut was absolute trail running bliss (I did it in the reverse direction to the description). Highly recommended!
April 25, 2022
Great run if you can sort the logistics. Did it in reverse on tired legs. Lots of river bed running. Lots of huts along the way to break it up. Good honest climbs. The track near the top of lagoon saddle on the Bealey side was very boggy.
October 30, 2021
The Wild Things Trail Directory is proudly supported by 
Send to your phone
Scan the below QR code to open this trail on your phone.
Tip: position the QR code in your phone camera screen.
