[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fbQnyFF5A4FkGC0TprIUBbaDVH8DqmENz5X9C6wu61NA":-1,"feature-flags":3,"$fNWIilk9FbOfQM3o04i0SYQXOf6db6xPiy2P7tIVUH9Y":5},{"homepage_proof_v2":4,"homepage_hero_cta_v2":4,"welcome_immediate_v1":4,"lifecycle_events_v1":4,"funnel_tracking_v1":4,"activation_reward_v1":4,"promo_codes_v1":4,"referral_v1":4,"pro_signup_bonus_v1":4,"pro_space_v1":4,"trial_express_v1":4,"microscope_v1":4,"login_page_v2":4,"signup_magic_reminder_v1":4,"first_session_48h_v1":4,"onboarding_purge_v1":4,"runner_profile_v1":4,"session_reminder_v1":4},true,{"permalink":6,"name":7,"seoTitle":8,"startDate":9,"endDate":8,"country":10,"countryIso":11,"city":12,"location":12,"disciplines":13,"distances":15,"participantsEstimate":8,"bigEventFlag":19,"featured":19,"websiteUrl":20,"socialLinks":21,"registrationUrl":22,"registrationOpenDate":8,"registrationOpenTime":8,"registrationCloseDate":8,"registrationOpenUrl":8,"registrationOpenStatus":8,"entry":8,"description":23,"descriptionLocale":24,"availableLocales":25,"screenshotUrl":8,"department":8,"departmentSlug":8,"distanceHubs":27,"usDistanceHubs":28,"state":8,"regionHub":8,"hasFiche":4,"isRunning":4,"duplicateOfPermalink":8,"isPast":19,"isStale":19,"indexableLocales":29,"nextEditionPermalink":8,"provisional":8,"region":8,"geo":30,"edition":33,"tags":35,"races":36,"nearby":46},"beast-of-the-blacks-ultra-40-mi-plus-20-10-mile","Beast of the Blacks Ultra 40 mi plus 20 & 10 mile",null,"2027-03-06","United Kingdom","GB","Crickhowell",[14],"Course",[16,17,18],"17 km","32.5 km","65 km",false,"https:\u002F\u002Fwww.limitlesstrails.co.uk\u002Fbeast-of-the-blacks",[],"https:\u002F\u002Fworldsmarathons.com\u002Fmarathon\u002Fbeast-of-the-blacks\u002Fregister?ref=Wo2X9tu","\u003Cp>\u003Cstrong>Beast of the Blacks Ultra 40 mi plus 20 & 10 mile\u003C\u002Fstrong> takes place on 6 March 2027 in Crickhowell, Wales. Three off-road distances are on the programme on the same day, with staggered starts from longest to shortest: 40 miles (65 km) at 08:00, 20 miles (32.5 km) at 09:00 and 10 miles (17 km) at 10:00. No official elevation gain has been published for these courses.\u003C\u002Fp>\u003Cp>The range of formats lets you choose your level of commitment within the same event. The 10-mile race suits runners used to long trail outings who want to discover Welsh mountain running; the 20-mile race already calls for experience of three- to four-hour efforts; the 40-mile race is a true ultra and requires a specific training block, with back-to-back long runs at weekends and descent work. An early-March date means building volume through the winter, with kit suited to potentially muddy ground and long stretches of self-sufficiency.\u003C\u002Fp>","en",[26,24],"fr",[],[],[26,24],{"lat":31,"lng":32},51.876835,-3.106125,{"year":34,"number":8,"firstYear":8},2027,[],[37,40,43],{"name":38,"distanceFormatted":8,"distanceMeters":39,"discipline":8,"elevationGain":8,"itraPoints":8,"date":9,"time":8,"lastEditionFinisherCount":8},"40 miles",65000,{"name":41,"distanceFormatted":8,"distanceMeters":42,"discipline":8,"elevationGain":8,"itraPoints":8,"date":9,"time":8,"lastEditionFinisherCount":8},"20 miles",32500,{"name":44,"distanceFormatted":8,"distanceMeters":45,"discipline":8,"elevationGain":8,"itraPoints":8,"date":9,"time":8,"lastEditionFinisherCount":8},"10 miles",17000,[47,56,66,75,85,95],{"permalink":48,"name":49,"startDate":50,"city":51,"distances":52,"distanceKm":54,"ficheLocales":55},"trails-tarmac-back-yard-ultra-winter","Trails & Tarmac Back Yard Ultra - Winter","2027-02-06","Llangattock",[53],"1 h",3,[24],{"permalink":57,"name":58,"startDate":59,"city":60,"distances":61,"distanceKm":64,"ficheLocales":65},"epona-100","Epona 100","2027-05-08","Llanfoist",[62,63],"100 mi","100 km",8,[24],{"permalink":67,"name":68,"startDate":69,"city":70,"distances":71,"distanceKm":64,"ficheLocales":74},"beast-of-the-beacons-ultra-40m-plus-20m-10mile","Beast of the Beacons Ultra 40m plus 20m & 10mile","2027-04-17","Llangynidr",[72,73],"16.09 km","32.18 km",[24],{"permalink":76,"name":77,"startDate":78,"city":79,"distances":80,"distanceKm":83,"ficheLocales":84},"beacons-marathon-and-ultra-2026","Beacons Marathon and Ultra","2026-11-09","Talybont-on-Usk",[81,82],"73.7 km","43.3 km",13,[24],{"permalink":86,"name":87,"startDate":88,"city":79,"distances":89,"distanceKm":83,"ficheLocales":94},"brecon-beacons-trail-challenge-2027","Brecon Beacons Trail Challenge","2027-05-03",[90,91,92,93],"52 km","43 km","25 km","11 km",[24],{"permalink":96,"name":97,"startDate":98,"city":79,"distances":99,"distanceKm":83,"ficheLocales":103},"beacons-ultra-and-trail-marathon","Beacons Ultra and Trail Marathon","2026-11-07",[100,101,102],"21.1 km","41.8 km","75.6 km",[24]]