How to Build a Cycling Training Plan: Century to Race Day

Runners have no shortage of plan templates: 16 weeks to a marathon, base-build-peak-taper, the long run on Saturday. Cyclists chasing a century, a gran fondo, or their first road race rarely get the same clarity — most advice stops at "ride your bike more" and a list of FTP zones. Zones tell you how hard to ride. They don't tell you how to structure a season around them.

This guide covers the other half: how to build an actual cycling training plan — the phases, the key sessions, the weekly structure, and how the build changes depending on whether you're targeting a century, a gran fondo, or a competitive road race.

How Long Should a Cycling Training Plan Be?

Unlike running, where distance alone tells you most of what you need, cycling events vary enormously in demand at similar distances. A flat century and a mountainous gran fondo covering the same miles are different training problems. Plan length should reflect both the event and your current base:

The Four Phases of a Cycling Plan

Cycling plans follow the same base-build-peak-taper arc as running, but the emphasis inside each phase shifts with the demands of the event — a gran fondo needs more climbing-specific work in Build than a flat century does.

The Key Sessions Every Cycling Plan Needs

1. The Long Endurance Ride

The Saturday long ride is to cycling what the long run is to marathon training — the session that builds the aerobic engine and fat-burning capacity to hold steady effort for hours. Keep it in Zone 2, conversational pace, regardless of how good you feel. Build duration progressively toward roughly 75–100% of your goal event's expected finish time, with a cutback week every 3–4 weeks.

2. Sweet Spot and Threshold Intervals

Sweet spot work (88–94% of FTP) and threshold intervals (95–105% of FTP) raise your FTP itself — the single biggest lever for riding faster at the same perceived effort. A typical session: 20-minute warm-up, 2–3 × 15–20 minutes at sweet spot with 5-minute recoveries, 10-minute cool-down. These sessions do the heavy lifting in the Build phase.

3. VO2 Max Intervals

Short, hard efforts (3–5 minutes at 106–120% of FTP) build the top-end power that matters for climbing repeatedly, responding to attacks, and surviving a crit. Most century and gran fondo riders need only a modest dose of this — road racers and criterium riders need considerably more.

4. Recovery Spins

Easy, low-cadence-optional spinning at well below Zone 2 flushes the legs between harder days. Skipping recovery rides — or turning them into moderate efforts because "it felt easy" — is the fastest way to arrive at your key sessions already fatigued.

5. Back-to-Back Long Rides

For centuries and gran fondos especially, riding on tired legs matters more than riding on fresh ones — most riders only experience true fatigue-adapted riding on race day itself unless they train for it. In the Peak phase, schedule a moderate ride on Saturday followed by a long ride on Sunday, so your body learns to produce power after accumulated fatigue.

What a Sample Training Week Looks Like

How Much Should Training Load Increase Each Week?

The same 10%-per-week guideline that applies to running mileage applies to cycling volume and intensity combined — but because power output makes intensity easy to quantify, cyclists have a more precise tool available: training load tracks the accumulated stress of every ride, not just the hours in the saddle, so two 90-minute rides at very different intensities are counted for what they actually cost your body.

Build for 3 weeks, then take a cutback week at 60–70% of peak volume. This is when your legs actually absorb the sweet spot and threshold work — skipping it just accumulates fatigue that shows up as flat power in your next Build block.

The Taper: Trust the Freshness

Cyclists taper worse than runners, if anything — a week of shorter rides after months of Saturday century-length efforts can feel like you're losing all your fitness. You're not.

In the 1–2 weeks before your event, cut volume by 40–50% while keeping a handful of short efforts at race intensity — enough to remind your legs what hard feels like without adding fatigue. Your glycogen stores top up, your legs stop carrying residual fatigue from Peak week, and your power numbers on race day will be higher than anything you saw in training.

The cardinal taper rule is the same as it is for runners: nothing new. No new saddle, no new nutrition strategy, no group ride you've never done before. Protect the fitness you've already built.

The Principles That Separate Good Plans from Bad Ones

• Consistency beats a perfect plan. A realistic plan you complete for 14 weeks beats an aggressive one you abandon after 6.
• Zone 2 must actually be Zone 2. Riding endurance rides at sweet spot effort "because it feels good" is the single biggest mistake recreational cyclists make — it steals recovery from the sessions that need it.
• FTP drives everything, so retest it. Zones calculated from a stale FTP number make every session on your plan slightly wrong.
• Fueling is part of training, not just race day. Practice your on-bike nutrition on long rides — race day is the wrong place to discover your stomach doesn't like a new gel.