The Line 300
Challenge description
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The Line 300 is an extreme challenge. You have 6 days to run a 330 mile route totally unsupported. Based on the Greenwich Meridian Trail, the route will start at Sand Le Mere in the north and end at Peacehaven on the south coast.
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You will be expected to sleep rough and provide for yourself without any outside assistance. This challenge is a true test of self management.
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Date
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TBA
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Price
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TBA
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Line 300 Winter
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Exactly the same format and time limit (6days) as the summer version, however it will be a Sunday evening start (around 11pm). You will also have to carry mandatory kit TBA, but this will roughly consist of full quality waterproofs, winter bivi bag, quality down jacket, gloves, hat, change of clothes in a drybag, spare phone etc. You MUST also sign a waiver that you have the ability to be extracted within about an hour by your own external support that is constantly monitoring your tracker progress and is your safety backup. We Cockbain Events are not responsible for your safety and will not be constantly monitoring your progress, and cannot come to your aid. You can only enter with a 150 mile + qualifier.
We will accept GUCR, Viking Way, Hardmoors 160, Spartathlon etc.....you should also have extensive self sufficiency experience, isolation, and be no stranger to outdoor bivvying in all conditions and winter running. I will reject and refund any applicants I feel are not suitable for this event without reason.
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11th Jan 2026
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Price
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£215 winter
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Enter Line 300 Winter
You should have excellent ultra running experience and experience of self support. You must have completed at least one 100 miler as a qualifier (150 for winter version, see above). Please only apply and make payment if you meet the required pre-requisite (entries can be rejected and refunded at the RD's discretion)
£215 Winter
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No refunds, transfers, or deferrals.
Questions? Contact us
Email Mark to find out more about The Line: cockbainevents@outlook.com, or follow our Facebook group!
Registration information
There will be a mass start on Sunday 11th Jan 2026 at 11pm.
The distance must be completed within 6 days (144 hours, Finishing by Sat 17th Jan, 11pm.)
What's included
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6 days use of a Track Trail® tracker and map.
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A GPX file showing the intended route you should follow.
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A roadbook describing the route, includes map extracts.
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Finisher T-shirt.
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Bespoke finisher Medal.
Rules
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No refunds, no deferrals.
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You must not come if you feel unwell/have any Covid symptoms.
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There will be a mass start on Sunday 11th Jan 2024 at 11pm. The distance must be completed within 6 days (144 hours, Sat 17th Jan 11pm).​​
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You must provide proof of passage through several towns on route. These will be listed in your roadbook. These will be required in the form of dated receipts, dated photographs and answers to questions. Your road book will be checked and validated at the end of the race. We will also carry out live 'spot checks' on competitors on route.​
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You must carry everything you think you may need and provide for yourself. ​
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No sticks.
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You can use shops, cafes etc.
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​You are not allowed a crew or outside assistance.​
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You are expected to 'bivvy'/sleep rough.​
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You cannot use hotels, BnB's etc or enter any vehicle.​
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The entire route must be completed on foot using navigation based on the GPX provided along with your own maps.​
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To complete the challenge you must be able to cover 50 miles per 24 hour period.​
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You are responsible for your actions on route.
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We are not supporting you in any shape or form between the start and finish. If you are in serious trouble you must have an emergency contact that can come to your aid.
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If you need to retire you must make your own arrangements.
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You need to make your own arrangements to and from both start and finish locations.