Overcoming obstacles at World’s Toughest Mudder — PHOTOS
The World’s Toughest Mudder gave athletes some stiff challenges at Lake Las Vegas on Saturday. The competitive event included a swim and an early morning run, requiring some competitors to wear miner’s lights in the pre-dawn hours.

Competitor fly through the air at an obstacle course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Spectators watch the action during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

A competitor flies through the air at an obstacle course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

The moon rises during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors balance on a wooden beam during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

A competitor uses dirt to dry off during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors swim in the water during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors climb down using ropes during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Spectators walk the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitor get over an obstacle during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

A competitors falls towards the water during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors make their way through the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

A competitor takes a brief break during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors approach an obstacle during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

A competitor flies through the air at an obstacle course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors run the course during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors make their way through an obstacle during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors climb up wooden planks during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto

Competitors climb up wood planks, right, and then balance across beams during the World‘s Toughest Mudder competition in Lake Las Vegas on Saturday, Nov. 14, 2015. Chase Stevens/Las Vegas Review-Journal Follow @csstevensphoto
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Competitors fly through the air in the obstacle course portion of the World's Toughest Mudder competition at Lake Las Vegas on Saturday. The event included a swim and an early morning run, requiring some competitors to wear miner's lights in the pre-dawn hours.