600KM – Brevet de Randonneurs

Distance: 606 km  in 42h 5mins
Date: Saturday 2nd June 2018
Time: 05:00 Saturday to finish by Sunday 23:05
Starting from: Llandrindod Wells
Speeds: 14.4-30 kph
Total Climb: 11323m [10261m for AAA]
AAA: 10.25
Category: BR
Rough sections: 5 plus 1 ford
Ideal bike: Gravel/adventure bike with fast rolling 40c tires

Entry opens: 1st October 2017
Fee: £12.00  ( £13.50 when paying via PayPal)

Enter: http://www.aukweb.net/events/detail/18-606/

Event details

606km cycling event starting from Llandrindod. Controls at Tregaron, Llanidloes, Tywyn, Caernarfon, Betws-y-Coed, Newtown and Kington, plus 6 information controls.

Based on our 400km route, but with extra fun. This 600km route contains everything; iconic climbs, sweeping descents, grass deserts, spectacular water features, multiple surfaces, lanes, roads and stunning scenery around every bend.

This is a rare opportunity to enjoy the ultimate single loop 600km route, and combine a challenging rough and smooth surface ride. Visiting many iconic landmarks, historic market, spa and garison towns, and countless natural features in mid Wales, Snowdonia and the Marches. The route passes through numerous grass deserts overnight and there will be NO AUK staffed food or sleep controls and NO bag drop so self-sufficiency is a pre-requesite. Climb many of the most challenging ascents Wales has to offer in one ride, along with a multitude of cycling surfaces. This ride requires the cyclist to be truly audacious.

Leaving Llandrindod Wells and heading South to Builth Wells before a quick warmup ascent of Mynydd Epynt. Heading back North to Beulah and onwards to Tregaron via the Devil’s Staircase. After a breather passing through the nature reserve, the ride heads back East on tracks along side the Claerwen Reservoir to The Elan Valley. Rising up The Elan Valley and down to the head of the Cwmystwyth Valley, the ride then takes NCR 818 over to and through Llangurig and onto Llanidloes. There will be a choice of nominated control cafes here. The ride then continues through the Hafron Forest, Staylittle, Machynlleth to the coastal town of Tywyn. Onwards to Dolgellau along NCR82 (see website header image). Rising out of Dolgellau on through Dinas Maldwydd to tackle Bwlch-y-Goes en-route to the Southern end of Lake Bala. Leaving Llanuwchllyn on the NCR 13, the route climbs over to the A470 and heads North to Beddgelert and then Caernarfon. Back over the Llanberis pass and dropping down to the A5, through Betws-y-Coed and eventually on to Bala. Climbing Hirnant Pass the route then drops to Lake Vyrnwy. Onwards over more grass dessert and then a flattish section to Newtown. Climbing out of Newtown to (and through) the sleepy market towns of Knighton, Presteigne and Kington the route drops South to Hay-on-Wye and Glasbury. The route then heads back North through Builth Wells to finish in Llandrindod Wells.

There maybe hillier 600km audax events however, when combined with the mixed surfaces, lack of outside assistance from organisers and the great Welsh weather, we doubt there are many harder or more adventurous. This could make for a great entry to the The High Rouleurs Society using ‘The Limit’ rules.

Reconnaissance notes

We should say that at time of publication (19th September 2017) none of the team putting on these rides have actually ridden this whole loop in one go. In fact, having ridden the 400km route, we debated whether we should offer a 600km event at all! However, some of you insisted so here it is. Don’t complain if it breaks you!


The 600km route has now been ridden by James. Read our report on the news page. 

Five lengthy rough sections, one river fording required, multiple steep climbs and descents, long overnight sections with no AUK staffed controls or bag drops and little access to the railway network for self extraction. This is a slow, technical, adventurous and truly audacious route.

Think again about entering this event if this is your first ever 600km ride, if you normally take the full 42 hours to ride a 600km, if you are uncomfortable with having no AUK staffed controls or bag drops on route or if you are unhappy about riding gravel. Plan to pack overnight food and water supplies.

Fast rolling 700x40c or 650x48c tyres would be perfect. Could be ridden on narrower tyres if you’re careful. Below 28c not advised. But that’s your call.

Track and profile overview