Here I am at the Hawk's Nest on the Delaware River, thirty-four days and 2,000 miles away from San Antonio
Just throwing out here some different clothing items that worked for me.
Quality paper straw hat. There's a helmet attached to the rear pannier against the wall, I scarcely wore it. The hat was bought for the purpose of crossing Texas and Arkansas in full sun but proved so practical I ended up wearing it the whole way. Worn over a nylon biker bandanna from one of my previous lives.
Plain ol' half-finger padded riding gloves (so necessary I brung an extra pair, just in case).
inexpensive Magellan nylon fishing shirt ($25). Worn as-is with no t shirt underneath. Oversized and left out of pants to preserve modesty. UPF 30 rating.
Somewhat more expensive loose-fitting REI nylon "Adventure" (??) pants ($50). UPF 50 rating. Thin nylon, any sort of boxers underneath caused chafing, ergo worn w/nothing underneath (hence the oversized shirt being left untucked). Doubtless the Brooks B-17 saddle helped enormously with this get-up.
31 days in mostly full sun in this outfit and I didn't even begin to sunburn anywhere. No sunscreen needed. Surprisingly cool and comfortable even in full sun on the open highway in June in Texas. Even lent themselves to layering the night in Upstate NY when it got down to 49 F. Also the thin nylon fabric hand washed easily and dried quickly after washing or rainstorm. Three additional sets of each rolled up compactly and weighed but little.
Inside pants legs tucked into ordinary cotton-blend dress socks kept them out of the chainrings.
$12 slip on sandals from WalMart. I have bad knees and broken toes. Any sort of enclosed toe footwear in combination with the forward pressure on the toebox as is typical of cycling causes great discomfort for me. These loose fitting sandals along with the BMX-type platform pedals also allowed me to alter my foot position while pedaling so as to alleviate any incipient knee pain. Especially important on long. laborious climbs.
Anyhow, the sandal soles got chewed up by the traction cleats on the pedals, but did last the whole trip. I'm wearing them as I write this.
Must have worked; besides the three off days, my shortest day (by choice) was 45 miles to the shore of Lake Erie, my longest day was 96 miles courtesy of a strong tailwind in Ohio (and I didn't even start riding that day until 11am after the front went through). Several 80 plus mile days, average daily mileage: 65 miles.