The Montane Lakeland 50 & 100
Montane Lakeland 100
Coniston
Race guide
Updated 29 June 2026
The Montane Lakeland 100 is one of the UK's most celebrated ultramarathons — a 169 km loop through the heart of the Lake District, starting and finishing in Coniston with 5,056 m of cumulative ascent. Traversing some of England's most rugged and beautiful terrain, the route links valley villages and high mountain passes from Wasdale Head to Blencathra, Ullswater to the Kentmere fells, making it far more than a simple point-to-point. With a Sunday 10:00 finish cut-off, competitors have roughly 40 hours to complete the circuit, meaning almost every runner will spend at least one full night out on the fells — often in deteriorating weather.
Course & Terrain
The 169 km route begins in Coniston (55 m) and heads immediately west and south into the quieter, rougher valleys of the western Lake District. The early miles via Seathwaite (11 km) and Boot (20 km) set the tone: narrow, boggy paths, steep grassy slopes, and limited waymarking that demands solid navigation. Wasdale Head (31 km) and Buttermere (42 km) follow, both framed by imposing fells and linked by high, exposed passes. From Braithwaite (53 km) the route swings north and east through the northern fells, passing Blencathra Centre (66 km, 305 m) and Dockray (80 km) before dropping to the Ullswater shore at Dalemain (95 km). The second half takes in Howtown (106 km) and the remote Mardale Head (122 km, 260 m) before threading through Kentmere (133 km), Ambleside (143 km) and Chapel Stile (151 km) back to Coniston. Terrain throughout is classic Lakeland: a mix of rocky paths, grassy ridges, boggy moorland and riverside tracks. Technical footing is the norm rather than the exception.
Decisive Climbs & Where the Race Is Won or Lost
Despite a high point of only 661 m, the race accumulates its 5,056 m of ascent across many repeated climbs rather than one dominant summit, and it is the relentless nature of this terrain that separates finishers from DNFs. The climb into and out of Wasdale Head (31 km) is notorious — arriving after 30 km of already rough ground, it demands respect. The section from Braithwaite to Blencathra Centre (53–66 km) climbs to 305 m amid increasingly tired legs, and the northern fell traverse to Dockray (80 km) is exposed and can be disorienting in poor visibility or darkness. Mardale Head (122 km, 260 m) is perhaps the most psychologically demanding checkpoint — reached at a point where runners are deep into sleep deprivation, still 47 km from home with significant climbing remaining through Kentmere. Any runner who arrives at Dalemain (95 km) ahead of schedule and in good shape has a strong platform, but the stretch from Howtown to Mardale Head is where many races unravel.
Pacing & Race Strategy
With a 40-hour window, aggressive early pacing is the most common route to a DNF. The western fells between Coniston and Buttermere are deceptively slow — technical terrain and cumulative climb mean even experienced runners should run comfortably within themselves for the first 42 km. Dalemain (95 km) functions as a natural mid-race audit: if you are significantly behind target here, the subsequent climb to Howtown and the long Haweswater section will compound any deficit. Plan a realistic sleep strategy before race day — most runners will face a full night crossing the northern fells between Blencathra and Dockray, and a second night or very early morning finish. A brief planned stop (20–30 minutes) rather than accumulated micro-sleeps at checkpoints often pays dividends after 100 km. The staffed checkpoints at Braithwaite (53 km), Dalemain (95 km) and Ambleside (143 km) are the best opportunities for a hot meal, a kit check and a deliberate mental reset.
Fuelling & Hydration
With 14 checkpoints spread across 169 km, the longest unsupported gap between aid is manageable in good conditions, but remote sections — particularly between Boot and Wasdale Head, and between Howtown and Mardale Head — demand that runners carry sufficient calories and water. The Lake District's natural water sources are plentiful but should be treated with caution; a filter or purification tablets are useful backup. Checkpoints vary in provision, but hot food and drinks are typically available at the major stops. Plan for around 300–400 kcal per hour depending on intensity, and prioritise real food at Dalemain and Ambleside where your gut is most likely to cooperate. In the deep night hours (typically somewhere between Blencathra and Dockray), appetite suppression and nausea are common — keep something easy on the stomach readily accessible in a hip pocket rather than buried in your pack.
Conditions to Expect
The Montane Lakeland 100 takes place in late July, but in the Lake District this is no guarantee of benign weather. The western fells around Wasdale and the northern moorland above Blencathra are both fully exposed to Atlantic weather systems, and temperature drops of 10°C or more are possible on the higher ground at night. Mandatory kit requirements exist for good reason: a full waterproof shell, insulation layer, hat and gloves should be treated as essential rather than optional ballast. Fog and low cloud are frequent on the northern traverse, making a reliable GPS device and map a necessity rather than a backup. Underfoot, even in a dry summer, expect wet grass, bog and slippery rock on the higher sections. Altitude is modest — nothing exceeds 661 m — but the combination of exposure, night running and technical ground means you should prepare for full mountain conditions throughout.
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Checkpoints & cut-offs
✓ Course data verified against the official source (2026-07-05) · official source
0 km · 55 m · —
11.3 km · 105 m ·
22.5 km · 89 m ·
31.2 km · 86 m · Sat 00:30
42.3 km · 126 m · Sat 03:30
52.8 km · 85 m · Sat 06:00
66.5 km · 283 m · Sat 09:00
78.9 km · 416 m · Sat 12:15
95.1 km · 147 m · Sat 16:00
106.5 km · 175 m · Sat 18:20
121.7 km · 260 m · Sat 22:20
132.1 km · 198 m · Sun 01:15
143.9 km · 60 m · Sun 04:00
152.9 km · 81 m · Sun 06:00
163.3 km · 162 m ·
169 km · 54 m · Sun 10:00
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