1997
Spring Classics (Belgium and France)
2004
Santana Bodensee tour (Germany, Austria, Switzerland, Liechtenstein)
2007
Santana Big River Rally (Mississippi River)
2008
2010
2011
Tour TK (Turkey)
Tour TK (Relive) (Turkey)
France - Burgundy and Provence
2014
Tandem Tour TK (Turkey)
2015
Tour CO (Colombia)
2016
Tour de Lopez (Lopez Island, Washington)
Lands End to John o' Groats (Relive)
2017
2018
France (Burgundy and Normandy)
2019
2020
2022
Ohio and the Underground Railroad
2023
2024
30 Years of Co-Motion Cycles - An Inside Look, by Mark and Chris Owings
Tandems and Tulips, by Mark Owings
Co-Motion Speedster Rohloff with Dual Belt Drive Review, by Mark and Chris Owings
The Tandem Life: A Primer For Prospective Couples, by Mark Owings
The Northwest Tandem Rally 2015, by The Rally Committee
Rodriguez Classic Tandem. Custom-Built and Custom Fit, by Mark and Chris Owings
Travel Pump Review, by Mark Owings
Rolf Tandem Wheel Review, by Bill Wheeler, with letter to the Editor by Mark Owings
An RTR Tandem Team at Interbike 2013, by Mark and Chris Owings
Rohloff Hub/Belt Drive for Tandems-A Tandem Team's Lowdown, by Mark and Chris Owings
Exploring the World of Tandem Gearing, by Mark and Chris Owings
Tandem Touring Now (Lake Michigan Tour), by Mark and Chris Owings
The Basic Rule and The Proper Method, by Mark Owings
Tandem Cycling and Travel, by Mark and Chris Owings updated Aug 25, 2024
Travel Pump Evaluation, by Mark Owings
Mini Pump Evaluation, by Mark Owings
Rohloff hub rear brake disc rotor removal, by Mark Owings Oct 2, 2016
Rohloff hub gear charts, by Mark Owings May 1, 2017
Coiling and uncoiling a Gates drive belt, by Mark Owings June 11, 2017
Gebla Rohbox Shifting System For Rohloff Hub, by Mark Owings
Rohloff Hubs and Belt Drives, by Mark and Chris Owings February, 2019
Exploring the World of Tandem Gearing, by Mark and Chris Owings April, 2020
Bicycles on BC Ferries, by Mark Owings July, 2023
The Rohloff hub and oil - Doing the math,by Mark Owings October, 2023
edited August, 2024
Tandem Drivetrains, by Mark Owings August, 2024
A Summary of Our Tours, by Mark Owings (March 29, 2015 - updated September 28, 2024)
Our Tandems, by Mark Owings (updated December, 2023)
Professional Racing Fans, by Mark Owings
Tandem Travel and Climate Change, by Mark Owings
2014 - The Year in Review, by Mark Owings
2015 - The Year in Review, by Mark Owings (Jan 4, 2016)
2016 - The Year in Review, by Mark Owings (Jan, 2017)
2017 - The Year in Review, by Mark Owings (Jan, 2018)
2018 - The Year in Review, by Mark Owings (Jan, 2019)
2019 - The Year in Review, by Mark Owings (Dec, 2019)
2020 - The Year in Review, by Mark Owings (Jan 1, 2021)
2021 - The Year in Review, by Mark Owings (Jan 1, 2022)
2022 - The Year in Review, by Mark Owings (Dec, 2022)
2023 - The Year in Review, by Mark Owings (Jan 1, 2024)