2023 Challenge Calendar

We offer several challenges throughout the year to help keep you motivated. Learn more about them below and download the Challenge Calendar for posting on your wall.

Name Date
January Revolutions January 1–31
Virtual Team Challenge January 1–31
Tour de SkiErg February 1–28
Military Challenge February 1–28
Valentine Challenge February 9–14
Mud Season Madness March 1–31
International Women's Day Challenge March 8
World Erg Challenge March 15–April 15
April Fool's April 1–15
Marathon and Century Challenge May 1–15
Juneteenth June 19
Summer Solstice June 21
Dog Days Of Summer August 1–28
WOD Week September 4–10
Fall Team Challenge September 15–October 15
Skeleton Crew October 25–31
Holiday Challenge November 23–December 24

Other Events

World Rowing Indoor Sprints March 8-12
BikeErg Sprints July 5-9
SkiErg Sprints November 9-12

Recent Challenges

Global Marathon and Century Challenge

May 1–15


  • Choose from two levels of participation:
    • Full Marathon/Century Challenge: Row or ski a full marathon (exactly 42,195 meters) or ride/row/ski 100,000m in one workout during the first two weeks of May and enter it in your online logbook.
    • Half Marathon/Half Century Challenge: Row or ski a half marathon (exactly 21,097 meters) or ride/row/ski 50,000m in one workout during the first two weeks of May and enter it in your online logbook.
  • Meter amounts must exactly match the distances (42,195 and 21,097, respectively, for the full and half marathon, or 100,000m or 50,000m for the Century/Half Century) to be counted for the challenge.
  • RowErg, SkiErg or BikeErg meters only (no on water/on snow meters please). Meters must be done all at once in one workout; you cannot combine meters from each machine to reach the half or full marathon total.
  • This is an individual challenge. (You do not need to belong to a team to participate.)
  • Meters must be entered online.

More information

Marathon Honor Board

Century Honor Board

Upcoming Challenges

Juneteenth Challenge

June 19

Concept2 will be donating $19,000 to charity to mark Juneteenth. For every person who signs up from the home page of their logbook, and does at least 1900m on June 19, we will donate an extra $2, up to a maximum total amount of $38,000. Note: BikeErg meters count for half the distance when applied to the challenge.

Learn More

Summer Solstice

June 21

In honor of the longest day of the year, we invite you to participate in the Summer Solstice Challenge by completing 21,000 meters.

Learn More