Josef Salek to break the barefoot marathon record on ice.

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[{"selector":"#anim-f511c254-a9a3-49b4-8d1c-806fabcd3e76","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-381c409a-623f-477b-b74c-9495386db777","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Czech Josef Salek breaks record for barefoot half marathon on ice.

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[{"selector":"#anim-d84cd96f-704d-4915-a05b-6aa35f791bc3","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-840099bb-8adc-430c-a014-8298a19810e4","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9341ecba-3b0c-4a6b-95ec-705b0a397d8b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-64de0c9c-27ee-42f7-8d1e-a531e71e85cc","keyframes":{"transform":["translate3d(-113.0303%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bddd9233-d2f0-4743-b689-a41a48614124","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9e71e471-4b6f-490c-8e06-0ba8bc6c7202","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] Salek's time of 1:50:42 sets a new Guinness World Record.

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[{"selector":"#anim-8f2ffaa5-610d-4288-bb3b-c40a1c37ee79 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-fb6ad213-6e9c-468d-872f-95dedb7193e7","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7a911544-7194-4cbf-9961-eb0656e751aa","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dcc2c757-dca1-4f9d-b087-42cde949f654","keyframes":{"transform":["translate3d(-114.24243%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-02aedc85-ce1b-46f8-a1ff-14aba40ae5c5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6dcb0022-ad13-4d9b-a1ea-9de5b95a44ac","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] He prepared by submerging his feet in ice daily for two weeks.

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[{"selector":"#anim-29bf21ff-4831-4c65-9e7c-784226cfa222 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-9b7a9f48-9c96-49c5-85eb-1eb8367b3d92","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0f8eb938-542d-4963-8203-1bd0d0fe48b4","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ff89b070-0071-4039-8cd8-ef426f9723b3","keyframes":{"transform":["translate3d(-110.30303%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-68e0a372-5e07-4481-b089-ae76fb218435","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1e7ff165-52a0-4806-8119-0a1f197b953a","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] Salek has a history of extreme physical challenges, including walking on hot coals.

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[{"selector":"#anim-8baf6926-819a-46ad-880f-54d92360c571 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-f3d234f1-8daf-4232-9f0a-edc33dbc55f7","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-34ea972a-95c6-4cfb-90d6-fa4ce63da801","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-da6a9463-963b-405f-b7ca-d2d0015fff6d","keyframes":{"transform":["translate3d(-110.30303%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2e51f12c-c26c-46a7-9ab5-90aaffcaf96c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3f9a6ed1-e0f8-4c0a-992a-0d71f534428a","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] Volunteers helped prepare the course after it froze over the night before.

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[{"selector":"#anim-97f02e38-e319-4a53-bd11-7aa79d10ddf7 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-14b72a87-cc64-4b33-aa71-e9f5d3346510","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3ff70b4e-c812-4bd2-b38d-b46bece0eeb7","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6b73aac8-66fc-4091-b2d6-430847576e4f","keyframes":{"transform":["translate3d(-110.30303%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7f675202-7d6f-484c-86e3-5ce1e52b434b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a50f6643-44ee-49e8-b249-718b1a7fa5fc","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] Salek used zigzagging and varying his running frequency to avoid slipping.

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[{"selector":"#anim-c4098ffd-2e9a-4bb3-ae23-b3b58fc73311 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-7cdcc7fe-041a-4c25-b193-58328ea9ec1d","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-15257af1-6dd8-4fb9-9d55-15d1efa12465","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b1e0dc22-9d33-4d98-9583-334bf4a0dde5","keyframes":{"transform":["translate3d(-110.30303%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-54906ae4-110f-48a5-9731-24c9cd5cd34f","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-61e67b31-92ac-41b4-a234-b118f3504c58","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] His perseverance reflects his attitude towards overcoming obstacles in life.

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[{"selector":"#anim-17556ed2-14c1-4ee4-8c1f-4c88f32d9115 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0.242060116351158%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-4aa4b9b9-e98f-4ddf-924a-46a925e5320b","keyframes":{"opacity":[0,1]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bba5ac69-33f1-4b82-9abb-7e2915c21aef","keyframes":{"transform":["translate3d(1921.05277%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":50,"duration":1600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4e4a2f6d-5537-4c8e-921b-700a6afbd164","keyframes":{"transform":["translate3d(-110.30303%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c1e38d53-d35c-4dbf-841a-bbccbcaeb54d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cda7f589-197e-44f3-9a08-1e0abb9eec7f","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] Learn about the best winter running shoes for cold and damp conditions in 2024.