Sign Up
7,167,378
Lifetime Meters
21,899
Season Meters

Last 30 Days Activity

Latest Challenges

Holiday Challenge November 27–December 24
January Revolutions January 1–31
Virtual Team Challenge January 1–31

View Challenges

Concept2 Blog

Dec 17 2025 Concept2 Year in Review: Moving Together
Dec 16 Holiday Season Erg Workouts
Dec 15 Two Decades of Concept2 Holiday Challenges and Counting
Dec 14 Twenty-One Holiday Challenges and Still Rowing

David Koffman

Log

Date Workout Score Ave Comments Action
04/14/22 14000m 1:10:01.0 2:30.0 View workout
04/13/22 13000m 1:03:07.8 2:25.6 View workout
04/12/22 12000m 58:46.8 2:26.9 View workout
04/11/22 11000m 53:11.8 2:25.0 View workout
04/10/22 10000m 47:38.5 2:22.9 View workout
04/09/22 9000m 44:22.6 2:27.9 View workout
04/08/22 8100m 38:29.1 2:22.5 View workout
04/07/22 7000m 32:29.2 2:19.2 View workout
04/06/22 6000m 27:55.4 2:19.6 View workout
04/05/22 5000m 24:06.7 2:24.6 View workout
04/04/22 4000m 18:37.0 2:19.6 View workout
04/03/22 3000m 13:49.3 2:18.2 View workout
04/02/22 2000m 8:57.4 2:14.3 View workout
04/01/22 4:31 1,030m 2:11.8 View workout
03/31/22 4:43 1,057m 2:13.9 View workout
03/18/22 11:08 2,790m 1:59.8 View workout
03/18/22 30:16 6,402m 2:21.8 View workout
03/17/22 15:20 3,231m 2:22.4 View workout
03/15/22 22:44 5,242m 2:10.1 View workout
03/15/22 20:21 4,167m 2:26.5 View workout
03/14/22 5:06 1,277m 2:00.1 View workout
03/14/22 16:22 3,931m 2:04.9 View workout
03/13/22 30:22 6,348m 2:23.5 View workout
03/12/22 21:05 5,414m 1:56.9 View workout
03/12/22 32:21 6,528m 2:28.7 View workout