Grandma’s Marathon 2016 Double: A Movement Nobody 8 years ago [This post originally contained an embedded video that is no longer available at its source.] Eric Strand cranks out the Grandma’s Double for the fifth consecutive year. Amazing feat and another fun video. Recommended Links:Grandma’s Marathon 2014 – The DoubleGrandma’s Marathon 2013: The Double Grandma’s Marathon 2019 Double: 52.4-mile Bachelor PartyGrandma’s Marathon 2017 Double: The Thundering Herd