AI-built gran fondo cycling plan
14-18 weeks to complete 100, 130 or 160 km Gran Fondo. EntrenAI structures sweet spot 88-94 % FTP (Coggan), progressive long rides up to 4-6h, specific long ride nutrition (60-90 g carb/h) and FTP test every 4 wk to calibrate zones.
Updated
What is a gran fondo cycling plan?
The Gran Fondo plan prepares for completing a long-distance cycling event of 100, 130 or 160 km with positive elevation of 1,500-3,000 m. It's the cycling equivalent of the marathon in running — distance with intrinsic difficulty but accessible with structured plan.
Plan pillars:
- Z2 base volume: 6-9 hours Z2/wk (60-75 % FTP) building aerobic base
- Sweet spot 88-94 % FTP: most efficient zone to improve FTP without requiring as long recovery as Z4-Z5
- Progressive long rides: every 2 wk +20-30 min, reaching 4-6h for 130-160 km Gran Fondo
- Specific long ride nutrition: practice eating/drinking 60-90 g carb/h on bike (essential — most fail from stomach, not legs)
- Trained aero position: 80 % of cycling drag comes from the body, not the bike. Efficient position saves 15-25 W at 35 km/h.
The plan is calibrated by entry level (FTP relative to BW) and Gran Fondo objective:
- 100 km, 1,500 m+: FTP ≥2.5 W/kg, 14-week plan
- 130 km, 2,000 m+: FTP ≥2.8 W/kg, 16-week plan
- 160 km, 3,000 m+: FTP ≥3.2 W/kg, 18-week plan (lots of climbing = harder)
Your power zones, in the watts of your FTP
The gran fondo plan writes every session as a percentage of FTP, and the app turns it into watts with your latest test. These are the six zones for three FTPs common in this plan; the trainer paints them on screen and the head unit warns you when you drift.
| Zone | % FTP | FTP 180 W | FTP 220 W | FTP 260 W | What it trains |
|---|---|---|---|---|---|
| Z1 | 0-55 % | 0-99 W | 0-121 W | 0-143 W | Active recovery |
| Z2 | 56-75 % | 101-135 W | 123-165 W | 146-195 W | Endurance: the base |
| Z3 | 76-90 % | 137-162 W | 167-198 W | 198-234 W | Tempo and sweet spot |
| Z4 | 91-105 % | 164-189 W | 200-231 W | 237-273 W | Threshold (FTP) |
| Z5 | 106-120 % | 191-216 W | 233-264 W | 276-312 W | VO2max |
| Z6 | 121-150 % | 218-270 W | 266-330 W | 315-390 W | Anaerobic capacity |
Your AI-generated plan
1. Initial validation.
- 6+ months regular cycling (not absolute beginner)
- Recent FTP test (power meter, smart trainer, or 20-min field test)
- Cardiovascular health without restrictions
- Bike in good mechanical condition (recent service, tires in shape)
- Committed to minimum 4 sessions/wk
2. Typical weekly structure (4 sessions):
- Tuesday - Sweet spot intervals (1h: warm-up + 3×8 min @ 88-94 % FTP + cooldown)
- Thursday - Z2 base (90-120 min Z2 conversational)
- Saturday - Progressive long ride (2-6h Z2, +20-30 min every 2 wk)
- Sunday - Recovery ride or Z2 (60-90 min easy)
Total: 6-12 hours/wk by phase.
3. 4-phase periodization:
- Base (4 wk): Z2 volume + 1 day sweet spot. FTP test wk 4.
- Build (4 wk): high Z2 volume + 2 days sweet spot. Long rides 3-4h.
- Specific (4-6 wk): long climbs Z3-Z4, simulation of Gran Fondo sections. Long rides 4-5h with real nutrition.
- Tapering + Gran Fondo (2 wk): -50 % volume, maintains intensity. Last long ride 7-10 days before event.
4. Long ride nutrition (CRITICAL):
- Pre-ride: oats with honey + banana + coffee (3h before) + 1 bar (30 min before)
- During (>3h): 60-90 g carb/h = ~1 gel every 30-45 min + 1 bar every 60 min + 500 ml sports drink
- Hydration: 500-750 ml/h depending on temperature. Salts 500-1,000 mg sodium/h.
- Post: large meal with protein + carb in 30 min post
Most common Gran Fondo mistake: bonk at km 100-130 because they ate too little. Practice nutrition from 3h long ride.
5. Trained aero position:
- Hands in drops sustained for 1+ hour straight
- Bent elbows, low shoulders
- Head forward relative to helmet (not fully upright)
- Practice in sweet spot intervals — not just slow Z2
The sessions that define this plan, block by block
Width = minutes, height = intensity relative to FTP (red line). This is how you will see each session in the app before getting on the bike: you know how long each block lasts, at what watts, and how much you rest.
- Z2
- Z3
- Z4
- Z5
- Z6
Who is this plan for?
- Cyclist completing 50-80 km routes wanting to step up. 14-week plan for 100 km. Progressive long rides.
- Experienced cyclist wanting to complete 130-160 km Gran Fondo. 16-18-week plan with sweet spot focus + specific nutrition.
- Long course triathlete (70.3, Ironman) using Gran Fondo as training. 14-week complementary plan.
FTP <2.5 W/kg or <6 months experience? Beginner or FTP intervals plan are better option to build base first.
Hours and TSS across the 16 weeks
From 6 to 12 hours a week, with a deload every fourth week and 2 taper weeks. The thin bar is the long ride, which reaches 5.5 h. TSS (training load) climbs from 280 to 600 per week.
- Base
- Build
- Specific
- Taper
- Deload
- Long ride
Your first weeks, in detail
Week 8
Mid-build — consolidated sweet spot, 4h long rides| Day | Session type | Detail | Duration |
|---|---|---|---|
| Tuesday - Sweet spot intervals | Consolidated Z3 sweet spot | - Warm-up 15 min progressive Z1→Z2 - **3×10 min @ 88-92 % FTP**, recovery 4 min Z2 between intervals - 3 min Z2 between blocks - Cooldown 10 min Z1 - Aero position (drops) during intervals | 75 min |
| Wednesday - Rest or recovery | Recovery | Full rest or 30-40 min Z1 very easy. | 0-40 min |
| Thursday - Z2 base + 1 sprint | Aerobic volume | - 90-120 min Z2 conversational (60-75 % FTP) - 3-4 sprints of 10s at end (neuromuscular maintenance) - Hydration + 1 bar every 60 min | 100 min |
| Saturday - 4h long ride | Long endurance | **4h progressive ride:** - 1h Z1-Z2 warm-up - 2h stable Z2 (60-72 % FTP) - 30 min sweet spot @ 85 % FTP in final section - 30 min Z1-Z2 cooldown - Nutrition: 70 g carb/h (mix drink + gel + bar), 600 ml/h, 700 mg sodium/h | 240 min |
| Sunday - Recovery ride | Active recovery | 90 min Z1-Z2 very easy (50-65 % FTP). High cadence (90+ rpm), focus on pedaling ease and loose technique. | 90 min |
These examples are real extracts from the EntrenAI planning engine. Your personal plan adjusts to your level, equipment and availability.
Equipment needed
EntrenAI automatically substitutes any exercise if you don’t have the gear.
- Road or gravel bike (700×28-32 mm wheels for mixed, 700×25-28 mm pure road)
- Power meter (Stages, 4iiii, Power2Max, Favero Assioma) — essential for FTP/sweet spot. Without it, plan works but less precision.
- Watch or bike computer (Garmin Edge 530+, Wahoo Bolt) with HR + power + GPS
- Chest HR strap (Polar H10 or Garmin HRM-Pro)
- Smart trainer (Wahoo KICKR, Tacx Neo, Elite Suito) — recommended for indoor sweet spot + winter
- Lightweight aero helmet
- Quality jersey + bibs for 4-6h long rides (Castelli, Rapha, Q36.5)
- Repair kit (tubes, multitool, CO2 or electric pump) — Gran Fondos often in remote areas
- Bottles ×2 (minimum) or hydration backpack (Camelbak)
- Additional clothing per season (windbreaker, sleeves, gaiters)
What most people get wrong (and how to avoid it)
- 1
Skipping FTP test every 4 weeks
Power zones based on FTP. Without 4-wk testing, you're using outdated data — hit sweet spot worse, easier in Z2 than real prescription. EntrenAI blocks progression without recent FTP test. 20-min field test (30 min warm-up + 20 min at sustainable max + 10 min cooldown) is valid without smart trainer.
- 2
Not practicing nutrition from 3h long ride
Waiting for Gran Fondo to start eating 60-90 g carb/h = guaranteed bonk or severe GI distress. Stomach needs 8-12-week adaptation to tolerate volume + concentration. Practice from 3+ hour long rides.
- 3
Doing entire plan indoors
Indoor sweet spot is viable, but outdoor long rides are mandatory. Critical outdoor differences: real position, wind, temperature, descents, stops, eating/drinking on the move. Minimum 2 outdoor long rides/month.
- 4
Underestimating Gran Fondo elevation
100 km Gran Fondo at 500 m+ is very different from 100 km at 2,500 m+. Elevation multiplies fatigue 2-4×. EntrenAI adjusts plan by Gran Fondo profile — stages long rides in similar terrain to event.
- 5
Changing bike/setup 1 week before
Changing saddle, handlebars, tires, new bike in 2-3 weeks pre-Gran Fondo = guaranteed discomfort. Any minor mechanical change minimum 4-6 wk before to adapt.
- 6
Cardio dominant in taper
Last week before event: -50 % volume + maintain intensity. Some do 'final long ride' 3 days before 'for confidence' — exhausting. Last long ride must be minimum 7-10 days before.
- 7
Going too hard first 30 km
Universal mistake: leaving with strong group first 30 km at 90 % FTP, collapsing later 80 km. Correct pacing: first 50 % of Gran Fondo at conservative Z2-Z3 (75-85 % FTP), last 50 % you can push if you have it.
- 8
Starting nutrition at km 30
Starting to eat when already hungry = late. Start first gel/bar 30-45 min into event, maintain 60-90 g carb/h FROM the start. Easier to prevent bonk than recover from one.
Other Cycling plan variants
Back to the general Cycling plan
- AI-built beginner cycling planBeginner cycling plan: build an aerobic base from scratch, learn bike position and nutrition, and ride your first 60 km in 12 weeks at 3-4 rides a week.
- AI-built cycling FTP intervals planCycling FTP intervals plan for intermediate riders with a power meter: sweet spot, threshold and VO2max work to add 20-30 W to your FTP in 12 weeks.
- AI-built road cycling planRoad cycling plan for amateur riders with a 6-10 hour weekly base: FTP intervals, sweet spot at 88-94% FTP, climbing and long rides over 12-16 weeks.
- AI-built indoor cycling plan with ZwiftIndoor cycling plan for Zwift, TrainerRoad or Rouvy: 4-5 short ERG-mode sessions a week with sweet spot and FTP intervals. 12 weeks, ideal for winter.
Frequently asked questions
FTP ≥2.8 W/kg is viable for 130 km/2,000 m+ Gran Fondo with 16-week plan. FTP ≥3.2 W/kg for 160 km/3,000 m+. If your FTP is lower, EntrenAI adjusts goal time (more relaxed) or suggests shorter/less elevation Gran Fondo.
85-95 rpm in Z2 (metabolically efficient, less muscular fatigue). On long climbs, 75-85 rpm. In sweet spot, 88-92 rpm. Very low cadence (<70 rpm) prolonged fatigues musculature — high cadence fatigues cardiovascular but preserves legs.
Yes, clearly. Without meter, sweet spot prescription is imprecise (cadence + perception don't equal real power). Affordable pedal meter (Favero Assioma 1-pedal) or crank arm (Stages, 4iiii) — from $350. Worthwhile expense for structured plan.
Pre (3h before): 80 g oats + banana + honey + coffee. 30 min before: 30 g carb bar. During (every 30-45 min): 1 gel 25-30 g carb + 600 ml sports drink (40-60 g carb/L). Every 60 min: 1 bar 30-40 g carb. Total goal: 60-90 g carb/h.
20-min field test without meter: with HR. After 30 min warm-up, sustained at max for 20 min (max HR you can hold). Your estimated FTP = average HR of those 20 min × 0.95 (approximation). Less precise than meter but allows plan.
After 4-5h long ride: large post-ride meal + extra sleep next night + 60-90 min Z1 recovery ride next day (NOT full rest — circulation aids recovery). Day 2 post-long ride: light sweet spot or Z2. Still fatigued day 3? Mandatory deload.
Minimum list: bike in perfect condition + 2 tubes + multitool + 2 CO2 pumps (or 1 + manual pump) + 4 gels + 4 bars + 3-4 full bottles in position + helmet + GPS + money + ID + race number + weather-appropriate clothing + light raincoat for descents.
FTP drops 3-5 % between consecutive tests + resting HR rises 5+ bpm + deteriorated sleep: immediate 1-2-week deload. EntrenAI detects signs and proposes auto-deload. Aggressive plan + poor recovery is counterproductive.
After comfortably completing 130-160 km Gran Fondo (FTP 3.5+ W/kg), options: (1) 200+ km Gran Fondo or multi-stage, (2) Half triathlon (70.3) if you add swimming + running, (3) Advanced FTP plan to raise power-weight ratio.
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