Congratulations to JB Owen & Peter Giesin who set a 200 Km Road record in the following categories: Mix Tandem, 50-59 age-group.
They also set 3 other records during this attempt:
| Distance Event Kilometers | Time | Avg Sp (Km) | Avg Sp (Miles) |
| 100 Km Road | 03:07:25.36 | 32.01 | 19.89 |
| 200 Km Road | 06:47:01.53 | 29.48 | 18.32 |
| Distance Event Miles | Time | Avg Sp (Miles) | Avg Sp (Km) |
| 100 Mile Road | 05:23:44.20 | 18.53 | 29.83 |
| Timed Event | Miles | Kilometers | Avg Sp (Miles) |
| 6 Hour Road | 110.488 | 177.813 | 18.41 |
These records are also new Guinness World Records
Rider’s Narrative Summary- 2026-09-26 JB Owen & Peter Giesin- WUCA Record Attempt
Record attempt: WUCA surveyed road-course records, mixed tandem, 100 km, 100 miles, 200 km, and 6 hours. Moffat–Mosca, Colorado (Hwy 17, San Luis Valley).
Riders: Peter Giesin (captain) and JB Owen (stoker)
Start date and time: Saturday, September 26, 2026, 7:05 AM MDT
Start location: North start/finish line of the certified out-and-back course on Colorado Highway 17 at Moffat, Colorado. GPS 38.0011° N, 105.9087° W. The apex of the turn is 10 feet beyond the white lines for the extra side lanes. The certified lap is 98,486.61 m, with the south turnaround 49.24 km (30.60 mi) south of the start, near Mosca (37.5592° N, 105.8598° W).
Conditions: After three days of rain, the morning started cool and clear at about 7,500 ft. Lingering moisture produced dense fog on the southern half of the course, where temperatures dropped low enough for ice to form on our outer layers. Winds were light at the start and built to about 13 km/h from the south through the morning. The air warmed to the low 20s °C (low 70s °F) by midday on our bike computer. The course is almost dead flat, with about 8 m of elevation change over the full lap, so weather and focus were the main variables.
Why did you want to do a record?
Peter: JB and I started riding tandem in 2020, during COVID, as a way to get outdoors and stay active through a trying time. We fell in love with it, and it quickly became part of our lives. Over the next six years, we spent several months each year riding across the North American continent. Pushing the boundaries of what’s possible is core to who we are, and that led us to set our sights on a world record on the one machine that brings us closest together.
JB: I love to challenge what is possible and show people what they are capable of. Riding Tandem represents the power of teamwork and the importance of working together as one. The record felt important to me to exemplify to others that anything is possible and that a mixed team can be competitive, successful, and represent not just a sport, but the ability to be an everyday person and improve your skills to a record level.
Equipment: A Co-Motion Java, a steel off-road adventure-touring tandem built for gravel and loaded touring rather than speed. We rode it as a bare chassis with no aero-specific equipment: Shimano Ultegra drivetrain with a 44×11 top gear, on 700c wheels with Continental tyres. Navigation and data: Garmin Edge 530 on the bars, Garmin Epix Pro as backup, Garmin HRM 600 heart-rate strap, and Garmin inReach for live tracking.
What did you eat & drink?
Real food, mostly: Shamrock Farms Rockin’ Protein shakes, PB&J wraps, Quest and Clif bars, dates and bananas. To be honest, nutrition wasn’t our strongest aspect of the day, and it’s the first thing we’ll refine for our next attempt.
What was the best part?
Peter: We had pivoted our summer cycling expedition and relocated to Moffat, Colorado, specifically for this attempt. Rolling out at daybreak as a team was amazing. We knew the day would push our boundaries, and we also knew we wouldn’t give up, because we had each other’s backs.
JB: The best part was the devotion and dedication I saw in my captain as he navigated the road with unrelenting precision and gave it his all. I truly loved the teamwork we created in our attempt, and the devotion we felt for the sport was inspiring. I also must mention the tremendous support we received from WUCA and fellow rider, Mathew Lefthand, who commissioned the course. Their support and encouragement were amazing and validated our desire to make the attempt as true competitors.
What was the hardest part?
Peter: The first lap. The opening 25 km started in bright sunshine with a slight chill in the air. Then we rode into a dense wall of fog that lasted the next 50 km. The temperature dropped, visibility vanished, and ice began forming on our outer layers. Meanwhile, the wind picked up to nearly 13 km/h. Holding our pace through it was a true test of our perseverance.
JB: The hardest part was the unrelenting crosswind we faced the entire time. The weather was not our friend, with temperatures dipping in the fog, and ice droplets forming on my gloves, face mask, and chest of my jacket. My fingers and toes were freezing. At one point, Peter passed me his prescription glasses, laden with ice droplets and condensation. I tried to wipe them clean, but he just told me to put them in my pocket, and he would ride without them. Knowing he wears prescription glasses, I have to say, imagining his vision compromised made me admire him even more.
Did anything particularly unusual happen?
Peter: Both stops, at about 10:22 AM and 12:29 PM, were planned restroom and fuelling breaks of roughly two minutes each. The fun moment came at the finish. The 200 km marker post had been stolen the evening before, so the crew and our official stopped at the 100 km marker, thinking it was the finish. As JB and I flew past on our final 1.5 km surge, yelling “Next one, next one!”, they had to scramble back into the follow vehicle and race to the real finish line before we got there.
JB: This is a bit silly, but I had trouble swallowing any food. I tried eating the snacks we had prepared, but my throat would not open. My trachea was so widened to compensate for my breathing that it seemed there was no space to swallow any food, until our second pit stop,
where I took a gigantic bite of banana, filling my cheeks like a squirrel and riding on. There were times I thought the wind had subsided, only to hit us with a surging side swipe and prove it was back again. The weather certainly had a personality all its own.
Results (from the Garmin Edge 530, pending official verification)
● 100 km: 3:06:51 (32.11 km/h / 19.95 mph)
● 100 miles: 5:22:37 (29.93 km/h / 18.60 mph)
● 6 hours: 177.87 km / 110.52 mi, endpoint reached at 1:04:46 PM
● 200 km: 6:46:59 (29.49 km/h / 18.32 mph)
Finish location: The certified 200 km point on Highway 17, 3.03 km (1.88 mi) south of the north start line, on the southbound (west) shoulder. It’s marked by a pink painted line across the shoulder; the marker post was stolen the evening before the attempt. GPS 37.9739° N, 105.9057° W.
Finish time: 1:51:44 PM MDT