@knlranch #Longboarding is definitely lower impact than #running, and there are a few lesser-known styles which are even lower impact yet. Since you like #boardsports:

#SurfSkating โ€” special board with a very turny front truck. You propel yourself forward with a series of deep, slow carves.

#LDP / pumping
Similar, only with more of a quick, wiggling motion. Like this
https://www.instagram.com/p/Cn83LoRJVbA/
Can do long distances.

#LandPaddling โ€” #SUP on a #longboard

Or #InlineSkating looks very fun.

Leonard Lee on Instagram: "@supersteadyskates fork drop 2 coming to @thanelife soon! ๐Ÿ“ 13ยฐ ๐Ÿ’ช๐Ÿผ minimal flex. Awesome power transfer โ†•๏ธ lots of mounting options. Say no to wheel bitting for larger wheels! โฌ‡๏ธ run your setup super low! Iโ€™m running 90mm in the front and 80mm at the back and they are levelled. Possible to drop more with taller spacers! ๐Ÿ“ DROP difference to the s fork ~23mm ๐ŸŽตDrop - Connor Price & Zensery"