Hikes that are not frequently mentioned, but that are really excellent when taken on their own terms, are the Valley floor hikes. They involve walking over a combination of old paved and dirt trails, only gentle ups and downs, and they take you to views that are by turns spectacular and intimate. Here you find a beautiful oak-strewn meadow by the river, there a view of a giant waterfall; here an owl peering at you from a tree, there some Indian grinding mortars in a large flat boulder. In May, they should be as lovely as possible, and many stretches are surprisingly quiet.
The three loops are each about 6 miles long, and give you three different sections of the valley. They can be combined into longer 11 or 17 mile loops, as each one connects to and includes a portion of the adjavent loops. Other connections are possible as well, especially in the Upper Valley.
The first is the Lower Valley loop, which can start at Bridalveil Fall and takes you eastward along the south valley floor, past the Indian mortars and by the base of Cathedral Rocks and spires, then across the El Capitan Bridge and westward along El Capitan, near Ribbon Fall and a lovely wetland by the Pohono Bridge. Cross the bridge and then head back upstream to Bridalveil Fall. This loop is especially nice in autumn as well.
The second involves the El Capitan Bridge again, but takes in the area below Sentinel Fall and Rock, and then crosses the river at one of three bridges - Sentinel, Superintendent's, or Swinging Bridge. It reconnecst to the loop trail over near Yosemite Lodge, then heads back down by Yosemite Fall trailhead, below three brothers and back to El Capitan.
The third includes the major Upper Valley views, passing Curry Village, Happy Isles, Mirror Lake Junction, Royal Arches, and Lower Yosemite Fall. One of the most view-packed trails on earth. Mobs of people too, but that's the only real shortcoming.
Wildlife may be seen on all of these routes. We've seen bears, deer, squirrels, owls, hawks, snakes, many bird species on these walks, and recently people have been seeing bobcat(s) near the roadways and trails. How cool is that? :-)
If you bring bikes, you can ride on the paved bikeways. There is no better place to ride a bike anywhere. Please, always be courteous of foot-powered critters, both domesticated and wild.
All of these are on park maps, and I have yet to look, but are all probably described and mapped elsewhere on the web. All of these can be done by almost anybody who does not suffer a physical disability, and all of them offer the observant walker a wealth of discovery and joy. All for just basic effort. You might not even break a sweat, although the gentle exercise will help you in every way :-) Good luck, and have fun!
Wilderness forever,
Bruce Jensen