Leaving Runna.

• Your plan keeps getting derailed. Travel, illness, work weeks. Every time life hits, the Runna plan stays the same and you fall behind. An adaptive coach re-reads reality weekly instead of expecting you to reshuffle.
• You’re adding a second sport. Runna is running-first. The moment you add serious cycling or swimming, its model stops representing your actual training load. ZoneTwo models all three as combined stress.
• You’re between race goals. Runna shines when you have a specific race date. Between goals, or during a base phase with no race booked, a rolling weekly review fits better than a countdown plan.
• You want to understand why. Runna is largely a black box. ZoneTwo shows you the formulas (Coggan, Friel, Foster), cites numbers in every explanation, and lets you ask follow-up questions.

If you’re running pure, your plan survives life, and you love Runna’s polish — stay. We’re not the right fit for every runner.

How your plan arrives

Runna: one plan for the full race block, delivered upfront, adjusted via preference sliders.

ZoneTwo: a rolling 1–4 week plan that regenerates every Sunday based on what you actually did. No upfront commitment; no “restart the plan” button when life intervenes.

Where you read the plan

Runna: polished native mobile app with in-run voice cues.

ZoneTwo: web app. We don’t do in-run audio. If voice-guided intervals are essential, you’ll miss them.

How your watch gets the workout

Runna: structured workouts push to your Garmin or Apple Watch.

ZoneTwo: we write the workout in plain English (“4×8 min at 5 km pace, 3 min easy between”). You set it up on the watch manually — or simply follow time/pace cues. For most amateur training, written intervals work fine.

How you ask questions

Runna: FAQ and support tickets.

ZoneTwo: AI chat that knows your full training history. Ask “why was today hard?” or “can I swap Tuesday’s intervals for a long run?” and get a grounded answer based on your numbers.

• Plan that adapts weekly. Miss a week through illness? The next block shifts automatically, not via a button press.
• Honest execution tracking.We compute your execution ratio, ask you how each session felt, and fold that into next week’s plan.
• Multi-sport awareness.If you swim or cycle alongside running, it’s load, not a distraction. Combined monotony and cross-sport overload are first-class metrics.
• Conversational coach.Pre-race nerves at midnight? Ask the coach. Runna doesn’t do that.
• Transparent methodology.Read the TSS formula. See your CTL curve. Know what’s driving every recommendation.

• In-run audio cues.We’re web-native, not native mobile. No spoken “Pick it up for the next interval” mid-run. If this is core to your experience, stay with Runna.
• Structured-workout push to watch. You execute our workouts manually on your device.
• The polished single-sport UX. Runna is beautifully designed for running. ZoneTwo is designed for athletes who may or may not be runners. Different aesthetic, different focus.
• A brand and community you’re already part of. Runna has real momentum. We’re earlier. You’re trading polish and social proof for depth and adaptability.

Week 1

Connect Strava. Don’t cancel Runna yet. Enter your threshold pace and HR in Settings. Browse the dashboard; use AI chat to ask about your current fitness.

Week 2

First full weekly review arrives Sunday. Follow ZoneTwo’s plan for one week. If your race is imminent (within 4 weeks), finish the Runna plan first and switch post-race — don’t change coaches during a taper.

Week 3

You now have two honest Sunday reviews. Compare how the plans evolve when something goes differently than expected. This is where the adaptive difference becomes visible.

Week 4

Cancel Runna or don’t. ZoneTwo stays free through beta regardless. We’d rather you stay because it works than because you committed.