It's about one-two-thousandth as tall as Olympus Mons.
In other words, 261.6 nails is 0.00055 times the height of Olympus Mons, and the height of Olympus Mons is 1,800 times that amount.(a.k.a. Mount Olympus) (Mars)
It's about one-six-thousandth as long as The Panama Canal.
In other words, 261.6 nails is 0.00017 times the length of The Panama Canal, and the length of The Panama Canal is 5,900 times that amount.(Canal de Panamá) (Panama)
It's about one-seven-thousandth as long as The English Channel.
In other words, 261.6 nails is 0.00014 times the length of The English Channel, and the length of The English Channel is 7,140 times that amount.(average width between Isle of Ushant and The Walde Lighthouse) (La Manche, Ärmelkanal, Mor Breizh, Mor Bretannek) (a.k.a. The Channel)
It's about one-eight-thousandth as long as The 405.
In other words, 261.6 nails is 0.00012829 times the length of The 405, and the length of The 405 is 7,794.8 times that amount.(a.k.a. I-405, Interstate 405, San DIego Freeway) (Southern California)
It's about one-eight-thousand-five-hundredth as long as Hadrian's Wall.
In other words, the length of Hadrian's Wall is 8,300 times 261.6 nails.(a.k.a. Roman Wall, a.k.a. The Wall, a.k.a. Vallo di Adriano, a.k.a. Vallum Aelium, a.k.a. Severus' Wall) (from North Tyneside, Tyne and Wear, England, United Kingdom to Cumbria, North West England, United Kingdom)
It's about 9,000 times as long as a Strand of Spaghetti (thickness).
In other words, 261.6 nails is 8,800 times the length of a Strand of Spaghetti (thickness), and the length of a Strand of Spaghetti (thickness) is 0.00011 times that amount.(average; restaurant and supermarket applications) (based on FMA Omcan Italian Made TR50 Counter Top Pasta Machine Extruder 13317)
An average strand of restaurant-grade spaghetti measures 0.03 nails in thickness. In 2010, a California Buca di Beppo set a world record by preparing a 13,780-lb bowl of spaghetti, served in a swimming pool.
It's about 10,000 times as long as a Grain of Sand.
In other words, 261.6 nails is 12,000 times the length of a Grain of Sand, and the length of a Grain of Sand is 0.0000833 times that amount.(medium grain)