On my daily commute I have a 1-mile coast, 10 second pulse and then another 1 mile coast.
Sadly, it's not so much fun going home.
My best ever was
16 miles on I-80 dropping down into Salt Lake City. Start at 7000 feet and drop down to 4200 in the city. Momentum took me halfway into the city (still on interstate) before having to add power. Winding down through the canyon at 80+ with
perfect wide sweeping curves was awesome in all senses of the word.