VO2max Cycling Workouts to Raise Your Aerobic Ceiling
VO2max sets the ceiling your FTP lives under — and it responds fast to the right work. Classic 3-5 minute intervals and short-short formats like 30/30s accumulate time near maximal oxygen uptake, forcing the heart and muscles to adapt. They hurt, they're short, and a block of them every few months keeps your ceiling moving up.
Over-Unders
46-77 min · 57-69 TSS
Alternating above and below threshold teaches your body to clear lactate while maintaining power - a crucial ability for racing and hard group rides.
Three-One Over-Unders
54-88 min · 68-83 TSS
Extended time just under threshold with one-minute pushes above it. The longer under portions make each surge sting more - exactly the stimulus that teaches your body to clear lactate on the move.
Attack and Settle
55-70 min · 45-55 TSS
A 30-second attack, then settle straight back to threshold without recovering. Mimics how races actually break apart - and trains you to absorb surges without blowing up.
Descending Over-Unders
62-71 min · 56-68 TSS
Over-under blocks that shrink as you go - four rounds, then three, then two. As the blocks get shorter, the surges feel sharper, so you finish strong rather than fading.
VO2max Intervals
62-89 min · 63-76 TSS
The hardest efforts that deliver the biggest aerobic gains. These 4-minute intervals push your oxygen delivery system to its maximum.
Short Hill Repeats
50-75 min · 44-54 TSS
Steep, short climbs ridden hard. Builds explosive power and mental toughness. Find a 1-2 minute climb and attack it.
30/30 Intervals
45-75 min · 42-52 TSS
Classic short-short intervals: 30 seconds hard, 30 seconds easy. Accumulates time at VO2max without the sustained suffering of longer intervals.
Microbursts
45-70 min · 41-50 TSS
Ultra-short hard efforts with brief recovery. Keeps your heart rate elevated and builds your ability to recover between surges — great for group ride fitness.
Descending Intervals
44-76 min · 51-62 TSS
Intervals that get shorter as you go. The first one is the hardest to pace — the rest feel more achievable. A psychologically friendly way to do hard work.
Sprint Power Development
59-89 min · 58-71 TSS
Sprint work followed by VO2max efforts. The sprints develop neuromuscular power, the longer intervals build your aerobic ceiling.
Tempo to Threshold Progression
60-90 min · 65-80 TSS
Progressive intensity that builds through the session. Teaches you to find another gear when already working — a key race skill.
VO2max Hill Repeats
62-85 min · 63-76 TSS
Find a 3-5 minute climb and ride it at maximum sustainable effort. Climbing at VO2max is the most effective outdoor interval training.
VO2max & Anaerobic Intervals
49-80 min · 53-65 TSS
Targeting your anaerobic capacity with sustained above-threshold efforts. These build your ability to sustain hard efforts.
VO2max 3-Minute Intervals
60-77 min · 49-59 TSS
Three-minute efforts at VO2max — shorter than classic 4-min intervals so you can hit the power target precisely. Targets the high end of your aerobic capacity.
Anaerobic Capacity Builder
49-78 min · 53-65 TSS
Short, supra-VO2max efforts to develop your anaerobic system. These intervals target the zone between VO2max and sprint power — the range where you attack, surge, and respond to moves in races.
Classic Fives
66-91 min · 64-78 TSS
Four five-minute efforts at the low end of your VO2max range. Five minutes is long enough to pull your breathing to its ceiling and hold it there - where the biggest aerobic adaptations happen.
Stacked Threes
55-79 min · 62-75 TSS
Six three-minute efforts ridden slightly harder than classic VO2max intervals. The shorter reps let you hit a higher target and still finish the set - stacking up quality minutes at maximum oxygen uptake.
Fast-Start Fours
68-90 min · 65-80 TSS
Four-minute intervals that open with a 30-second surge. The hard start drives your oxygen uptake up fast, so you spend more of each rep at your aerobic ceiling - more stimulus from the same minutes.
Surge and Float
52-76 min · 54-66 TSS
Thirty seconds hard, fifteen seconds floating - never fully recovering. The short floats keep your oxygen uptake pinned near maximum for the whole set, delivering big VO2max time without long, grinding reps.
Forty-Twenty
51-83 min · 56-68 TSS
Forty seconds on, twenty seconds off, in three sets of eight. The longer work bouts bite harder than 30/30s while the short recoveries keep your aerobic system at full stretch - a race-hardening session.
Thirty-Thirty Pyramid
51-85 min · 48-58 TSS
Sets of 30/30s that grow, peak, then shrink. The build teaches pacing, the peak set delivers the training load, and the shrinking back end lets you finish strong instead of cracked.
Sixty-Second Surges
55-76 min · 49-59 TSS
One minute well above threshold, eight times, with generous recoveries. Builds the anaerobic capacity you need to attack, close gaps and survive the hardest minute of a race.
Ninety-Second Punch
51-71 min · 43-53 TSS
Ninety seconds is a brutal length: too long to sprint, too short to settle. These reps stretch your anaerobic capacity and teach you to keep pushing when the legs are screaming.
Two-One Ladder
58-81 min · 57-69 TSS
Alternating two-minute and one-minute efforts, with the short ones harder. Trains both ends of your anaerobic range in one session - sustained surges and sharp digs.
Steep Ramp Repeats
68-90 min · 59-72 TSS
Three-minute repeats on a steep climb at VO2max effort. The gradient forces constant pressure on the pedals - no coasting, no hiding - so every rep counts.
Shrinking Climbs
68-95 min · 66-81 TSS
Climb repeats that get shorter and harder: 3 minutes strong, 2 minutes harder, 1 minute nearly flat out. Teaches you to empty the tank in stages - exactly how decisive climbs are raced.
Attack and Hold
68-76 min · 52-64 TSS
A 30-second attack straight into three minutes at VO2max pace. Simulates the hardest moment in racing - making a move and then holding it - and builds the ability to recover while still riding hard.
Punchy Rollers
51-72 min · 41-50 TSS
Short, repeated surges over rolling terrain - the puncheur's bread and butter. Ten hard efforts of 30 seconds teach your legs to punch over every rise without blowing up.
Eight-Minute Bridge
55-79 min · 64-78 TSS
Eight-minute efforts right at the border of threshold and VO2max. Long enough to build sustained power, hard enough to raise your ceiling - the bridge between the two systems.
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