Those cyclists competing in the 2014 Tour de France sure are impressive.
Over the three weeks of the famous competition, cyclists will ride 2,277 miles in the hope of achieving bike-riding glory.
And as they whizz by us mere mortals, the amazing lycra-clad athletes are burning a lot of calories.
Over the 21 stages of the race, the 197 participants will burn nearly 20 million calories combined - 19,800,000 calories, to be exact.
Wowser.
An estimated 3.1 million people in the UK ride a bicycle each month – we may not pedal as fast, but just imagine how many calories we must burn altogether….
Tour De France
(01 of19)
Tousands of spectators line the roads as the pack climbs Bradfield pass during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(02 of19)
Spectators line the road as the pack climbs Blubberhouses pass during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Laurent Cipriani) (credit:ASSOCIATED PRESS)
(03 of19)
Stage winner and new overall leader Italy's Vincenzo Nibali, center in blue shirt with the Italian flag on his jersey, climbs Bradfield pass during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(04 of19)
A supporter draped in the Union Jack encourages France's Blel Kadri, right, and France's Thomas Voeckler, center, during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Laurent Cipriani) (credit:ASSOCIATED PRESS)
(05 of19)
Spectators watch as a distanced rider climbs Bradfield Pass during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(06 of19)
Spectators line the road on Bradfield pass as they wait for the pack during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(07 of19)
Thousands of spectators line the roads of Yorkshire as the pack passes during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(08 of19)
Spectators line the road during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(09 of19)
Spectators with faces painted in the colors of the best climber's dotted jersey line the road during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Laurent Cipriani) (credit:ASSOCIATED PRESS)
(10 of19)
Spectators line the road during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(11 of19)
Spectators, one holding the Union Jack flag with Britain's Christopher Froome's name, line the road during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(12 of19)
Spectators, one holding the Union Jack flag with Britain's Christopher Froome's name, line the road as the pack passes during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(13 of19)
Spectators line the road during the second stage of the Tour de France cycling race over 201 kilometers (124.9 miles) with start in York and finish in Sheffield, England, Sunday, July 6, 2014. (AP Photo/Christophe Ena) (credit:ASSOCIATED PRESS)
(14 of19)
Supporters are pictured along the road during the 201 km second stage of the 101st sedition of the Tour de France cycling race on July 6, 2014 between York and Sheffield, northern England. AFP PHOTO / JEFF PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images) (credit:JEFF PACHOUD via Getty Images)
(15 of19)
SHEFFIELD, ENGLAND - JULY 06: Fans crowd the sides of the course as they support the riders during stage two of the 2014 Le Tour de France from York to Sheffield on July 6, 2014 in Sheffield, United Kingdom. (Photo by Doug Pensinger/Getty Images) (credit:Doug Pensinger via Getty Images)
(16 of19)
Supporters are pictured along the road during the 201 km second stage of the 101th edition of the Tour de France cycling race on July 6, 2014 between York and Sheffield, northern England. AFP PHOTO / JEFF PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images) (credit:JEFF PACHOUD via Getty Images)
(17 of19)
Supporters are pictured along the road during the 201 km second stage of the 101st edition of the Tour de France cycling race on July 6, 2014 between York and Sheffield, northern England. AFP PHOTO / JEFF PACHOUD (Photo credit should read JEFF PACHOUD/AFP/Getty Images) (credit:JEFF PACHOUD via Getty Images)
(18 of19)
Confidis rider Nicolas Edet makes his way to the summit ahead of the main peloton as stage two of the Tour de France passes over Holme Moss Moor, Yorkshire. (credit:EMPICS Sport/EMPICS Sport)
(19 of19)
The pack climbs Cray pass during the first stage of the Tour de France cycling race over 190.5 kilometers (118.4 miles) with start in Leeds and finish in Harrogate, England, Saturday, July 5, 2014. (AP Photo/Laurent Cipriani) (credit:ASSOCIATED PRESS)