Your watts for Sofia
Meet Sofia
Sofia is where most Zwift journeys begin. At 0.8 W/kg she's barely above a warm-up for most cyclists, which is exactly the point — you can hold a conversation, look around at the Watopia scenery, and figure out how Zwift actually works without worrying about being dropped. The group around her tends to be a mix of complete newcomers and experienced riders using her for active recovery, a genuinely mixed-ability crowd that's surprisingly good for people learning the ropes. Nobody's under pressure. The ride timer runs longer than people plan. For a lot of riders, Sofia is the first time Zwift felt like something worth coming back to.
Who suits Sofia
Sofia's the most accessible entry point in the game — and more useful to experienced riders than she gets credit for.
- Complete beginners who haven't built cycling fitness yet and want to get comfortable on the platform before worrying about numbers.
- Riders returning from injury, illness, or a long break — keeping the legs moving without putting them under strain.
- Experienced cyclists using her for genuine Zone 1 active recovery. For anyone with an FTP above around 90 W, Sofia sits comfortably below that threshold.
- Anyone who wants a long, social ride without the pressure of keeping up. The group chat tends to be more active here than anywhere else.
- Older riders or those managing health conditions who benefit from consistent, gentle movement.
What to expect in Sofia's group
Sofia runs one of the biggest groups on Zwift, partly because of how accessible she is, and partly because experienced riders keep coming back for recovery sessions.
The big group is part of what makes Sofia good for beginners. There's always someone to ride near, the draft flattens the effort further, and there's no real consequence to drifting off the back and rejoining. Nobody's racing to the front.
Sofia uses the same dynamic pacing as every other RoboPacer — she goes up to +10% harder on climbs and eases off up to −20% on descents. At 0.8 W/kg the absolute numbers stay low, but on a hilly route the pace still varies. Check the RoboPacer schedule if you want a predictable flat-terrain session.
See your watts for all 10 RoboPacers at once — useful for mapping out where Sofia sits in your progression.
Full Calculator →Common questions about Sofia
How many watts do I need to ride with Sofia?
Multiply your weight in kg by 0.8. A 70 kg rider needs 56 W; an 80 kg rider needs 64 W. The calculator at the top of this page does it for you. That's the flat-terrain baseline from the front — with mid-pack draft in Sofia's large group, the actual effort is lower still.
Is Sofia too easy for experienced riders?
For hard training, yes — 0.8 W/kg is Zone 1 for almost any trained cyclist. But that's the point on recovery days. Experienced riders use Sofia regularly to spin out tired legs, and the large group makes it sociable. If you're after structured training, look at Coco (2.6 W/kg) or higher. If you need an easy day, Sofia delivers exactly what she's supposed to.
Can I lose fitness riding with Sofia all the time?
If Sofia is your only ride, yes — 0.8 W/kg doesn't provide enough stimulus to build or maintain aerobic fitness for most people. She's designed for recovery and beginners, not as a training tool. If you want to improve, mix in harder sessions or start progressing towards Taylor (1.1 W/kg) and beyond. Use Sofia on the days you need easy, not as your default.
Sofia vs Taylor — which is better for beginners?
Start with Sofia if you're brand new to cycling or Zwift and not sure what to expect. The pace is forgiving and the group is welcoming. Once Sofia feels genuinely comfortable — you can hold a conversation and barely feel the effort — move to Taylor at 1.1 W/kg. For a 70 kg rider that's the difference between 56 W and 77 W. A meaningful step up, but still very accessible.
What is Sofia good for in training?
Active recovery, primarily. 0.8 W/kg keeps blood moving and clears fatigue without putting the body under further stress. It's also useful for testing new equipment (turbo trainers, shoes, fit changes) without fatigue interfering. For beginners, she's good for building ride time and confidence before stepping up. For everyone else, she's a tool for easy days, not hard ones.
What is Sofia's watt output on Zwift?
Sofia produces 60 W on flat terrain. All RoboPacers weigh 75 kg — 75 × 0.8 = 60 W. On climbs that can increase by up to 10%, and on descents it drops by up to 20%. She's the lowest-output of all 10 RoboPacers, which is by design: she exists to be accessible to everyone.
Just getting started on Zwift?
Sofia's a great first ride. Get on, find your pace, and work your way up from there.
Get Started on Zwift →Check where Sofia is riding today. Routes change week to week.
Today's Routes →