{"product_id":"relentless-forward-progress-a-guide-to-running-ultramarathons","title":"Relentless Forward Progress: A Guide to Running Ultramarathons","description":"\u003cp\u003e\u003cstrong\u003eNew copy of Relentless Forward Progress: A Guide to Running Ultramarathons by Bryon Powell.\u003c\/strong\u003e - Paperback, Published by Breakaway Books, 229 pages, ISBN-13: 9781891369902, ISBN-10: 1891369903.\u003c\/p\u003e\u003cp\u003eHassle-free 30-day returns. Free shipping on orders over $35.\u003c\/p\u003e","brand":"Breakaway Books","offers":[{"title":"Default Title","offer_id":46309093245162,"sku":"DS-CA-1891369903","price":70.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/1735\/7290\/files\/51J6A-OxuXL.jpg?v=1789941940","url":"https:\/\/justgreatbooks.org\/products\/relentless-forward-progress-a-guide-to-running-ultramarathons","provider":"Just Great Books","version":"1.0","type":"link"}