Simple question with more complicated answer. I assume you mean solo as apposed to traveling in the peloton of racers or, say, descending a mountain (when riders will hit 65 mph+).
Looking back to the last TdF that LA competed in his average speed for the prolog stage of 19km (11.8 miles) was over 54 kph (33.5 mph).
Looking at a longer time trial stage, he won the 55km (34 mile) stage at an average speed of 46.4 kph (28.8 mph).
Now these are averages over a certain distance - if he needed to simply max out speed you could shorten the distance further for some increase in speed. Let's just say 35mph+ shouldn't be too difficult. Could he break 40 mph unaided on the flat? I'd say based on these figures it's pretty likely even if just for a short time.
Fast huh? This is true. Track cyclists like Marty Nothstein hit well over 40 mph. The world record for the kilometer is 58 seconds. So you can calculate the speed from that, imaging that is from a standing start. The world record for a 200 meter flying start is about 9 seconds. Using these times and multiplying to the equivalent of 1000 meters comes out to 9 x 5 = 45 seconds for the kilometer which is 0.625 miles. That works out to 72 seconds for a mile. Now take 60 minutes (1 hour) and convert it to 3600 seconds and divide by 72 seconds to get the mph. Answer is 50mph!! Wow! That is a cyclists top average speed over 200 meters. Logically, a sprint specialist could hit slightly above 50mph when he hits the line. Say 52mph! Lance is not a pure sprinter. He is a road and time trial specialist, so his numbers are probably 5% lower.
The Ford GT boasts a Top speed of 205 mph while the Lamborghini's rank in as follows: 350GT - Top speed 150 mph 350 GTV - Top speed 170 mph 450 GT 2+2 -Top speed 160 mph Muira - Top speed 179 mph Espada - Top speed 179 mph Islero - Top speed 154 mph Jarama - Top speed 150 mph Urraco -Top speed 140 mph Countach -Top speed 183 mph Silhouette -Top speed 160 mph Jalpa -Top speed 150 mph LM002 -Top speed 130 mph Diablo -Top speed 210 mph Murclelago -Top speed 219 mph Gallardo -Top speed 190 mph Reventon - Top speed 221 mph So as you can see, only three models of Lamborghini are faster than the Ford GT.
Secretariat's top speed was recorded at about 49 mph during the Belmont Stakes in 1973.
(Not exact but close) 1. Hennessey Venom GT Top Speed= 270 mph 2. Bugatti Veyron Supersport Top Speed= 270 mph 3. Koenigsegg Agera R Top Speed= 260 mph 4. SSC Ultimate Aero Top Speed= 257 mph 5. Saleen S7 Twin-Turbo Top Speed= 248 mph 6. Koenigsegg CCX Top Speed= 245 mph 7. McLaren F1 Top Speed= 240 mph 8. Zenvo ST1 Top Speed= 233 mph 9. Pagani Hayura Top Speed= 230 mph 10. Gumpert Apollo Top Speed= 225 mph
The top speed on a jaguar xkr is 155 mph.
top speed of a yz125 in mph
top speed is 35.00 mph
The greyhound is the fastest dog - with a top speed around 46 mph, but there are several mammals faster than it. Of course the cheetah is considered the fastest - with a top speed around 68 mph (and as much as 75 mph for very short distances), but it can only sustain it's high speed for a short time so at longer distances a greyhound could actually catch up and pass one in a hypothetical race. Other animals that are faster than a greyhound include: Hare - top speed ~50 mph Blackbuck antelope - top speed ~50 mph Lion - top speed ~50 mph Wildebeest - top speed ~50 mph Springbok antelope - top speed ~55 mph Pronghorn - top speed ~55 mph Ostrich - top speed ~60 mph
162 mph
The top speed is 163 mph
The top speed is 121 mph.
Top speed is 175 mph
the top speed is 148 mph