Last Updated: 18th Feb 2024


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Trig K Clockwise

Rai Valley, Marlborough

Submitted by Ray Boardman

Last Updated: 18th Feb 2024


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I've done it Done


Grunt Factor: 16 ?

Gnarl Factor: 80 ?








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Trail Map

Type of Run

Front country - easily accessible


Very hilly

Native bush

Run Makeup


Easy Single Track

Technical Single Track

Average Uphill Gradient: +15.7%

Average Downhill Gradient: -13.4%


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Estimated Times to Run







Head onto the tracks on the eastern side of the road, follow this track into the bush until you get to junction that is sign-posted pointing up to Trig K (there are a couple of unsigned junctions). Take the left branch and start climbing. Follow this track upwards to the summit, then descend down the far side and follow the track past the second waterfall down to the river, follow the river back past the first waterfall and back to the car park.

Towards the end of this run there are a couple of smallish waterfalls that are quite scenic after rain.

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Daily buses go past from Nelson and Blenheim, with camping available on site.

8 km

7 minutes





Windproof jacket, Whistle, First aid kit, Extra food for emergencies, Cellphone, Map

Water available from the cafe at the start/finish to purchase. Can source from route if desperate.

Slippery & muddy when wet

After strong winds, trees can be blown over the track

Doc Cafe at Pelorus Camp Ground
Pelorus Bridge
Purely convenience, it is there in the carpark

Trail Legend

Brad  Rivers

Brad Rivers

has completed Trig K Clockwise 3 times in the last year.

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Trail Reviews

This is a great loop, with beautiful and varied forest. It's a bit grunty, but worth the effort, and a fun run down.

Tara Jackson

May 22, 2022

Ace climb and some awesome views. There is a reason it says it’ll take 4 hours to walk! She’s steep and rooty. But worth it 😍 I had to hunt for the path at the second waterfall and took a wrong turn up the hill! Looking at the waterfall the path is on your left over the little stream!

Lauren Mai Anderson

November 10, 2021

Loved this loop. Have never stopped to explore here before so glad I made the time to do so. Very grunty up, and with all the tree roots more of a hike, but managed to negotiate them enough to call it running on the way down. Stunning bush with some amazing old growth native trees. Definitely worth a visit.

Rebecca Sunderland

October 25, 2021

Track starts off very wide, and well maintained. Then when you head upwards it becomes a single track going through some amazing beech trees. At the trig I was quite amused that the signpost gave directions to the cafe. Also the trees had recently been chopped so could see down the river to where we were staying. The descent back down was quite long, but very enjoyable. Make sure you stop at Waterfall 2, and take a dip to cool off. Did this on New Years Eve, a great trail to end the year with. (Also if you geocache, there are a lot to find on this trail)

Sharon Sharpe

January 30, 2020

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