Yeah, on your tandem! Ours is an '03. I pretty much only ride the tandem outdoors now. My singles are too easy. More pain is better and all that crap. We do a group ride out of Redmond, Snohomish, Monroe, or Woodinville almost every Sunday year 'round. We're the oldest riders now: those older than we aged out of the ride. We're also the slowest and get dropped as soon as the road tilts up. Our moving average was 15 on that birthday ride, 2300' of gain. This Sunday's ride might be something like this: https://ridewithgps.com/routes/29688003 We've ramped up the distance and climbing because April. That's gonna hurt.

I have riding buddies who spent their honeymoon in jail, back in the day.