How Riders Pace a Time Trial at the UCI Road World Championships

On a flat time trial course, pacing is wind management, not power-to-weight management. The 46.4 km elite men's route and the 27.8 km elite women's route at the 2011 Copenhagen world championships both ran point-to-point through Rudersdal Municipality, with a UCI-mandated start ramp and a finish gantry on the same straight road. Without a climb to break rhythm, every second gained or lost came from a rider's ability to hold a steady effort and read the conditions.

Tony Martin rolled off the start ramp at 16:04 local time on 21 September 2011, already the defending world champion. Two riders had posted faster intermediate splits, but neither held their pace to the line.

Riders do not pace a flat time trial by riding the hardest they can from the first kilometre. The flat profile of Copenhagen removed the variable of elevation but amplified the effect of wind, which shifted during the afternoon and materially changed outcomes for later starters in the elite men's field. Power output had to be metered against the course profile, not the competitors.

The course profile of the 2011 elite time trial was a loop with 85 metres of total elevation gain. That is nearly nothing over 46.4 km. On a course this flat, the primary resistance a rider fights is aerodynamic drag, not gravity. Power output pacing therefore centres on minimising the time lost to air resistance while avoiding the metabolic cost of going too deep too early.

Ride To The Wind, Not The Gradient

Riders target a near-constant power output, adjusted only for wind direction and the few short ramps on the course. A headwind section demands a slightly higher wattage because the slower speed means aerodynamic drag is lower and the rider gets a larger return on each additional watt. A tailwind section is the opposite: pushing harder into a tailwind wastes energy because the rider is already at high speed where drag dominates. Average speed on the elite men's course was 51.3 km/h for the winner, a figure that reflects the flat terrain and the tailwind on the return leg rather than raw power alone.

The First Two Kilometres Are The Trap

The start matters more on a flat course than on a hilly one. The start ramp itself is a fixed incline that forces a hard initial effort, but the real trap is the first two kilometres. Riders who go out above their target wattage in the first three minutes pay for it with a drop in output over the final 10 km that no amount of will can recover. Martin's opening split time at the 7.3 km check was not the fastest of the day. He was sixth at that point, 8.3 seconds down. The flat course allowed him to build speed without spiking effort, and his second-half splits were faster than anyone else's.

A UCI time trial pacing strategy is not a tactic against other riders. It is a plan to distribute work across the distance. UCI race regulations in 2011 allowed no drafting and mandated a minimum two-metre lateral gap between riders on course. A rider catching another from two minutes behind had to pass without sheltering, and the rider ahead could not sit on the faster rider's wheel. This means pacing is a closed-loop problem: you, the clock, and the air.

The elite men's field started at two-minute intervals in reverse order of national ranking, with Martin as the last man off. By the time he started, he knew the split time of every rider ahead. His team car relayed gaps, but those numbers informed effort, they did not dictate it. A split that shows a rival fading is not an invitation to surge. The correct response is to hold the planned wattage and let the fade come to you. The flat time trial distance of 46.4 km is long enough that a 20-second over-exertion in the middle third costs 40 seconds at the finish.

Wind Shifts Beat Power Charts

Wind on the day was the variable that no pacing chart could fully account for. The elite men's race ran in the afternoon with a crosswind that shifted to a tailwind on the return. Riders who started earlier in cooler, calmer air posted times that held up better than expected. Bradley Wiggins, who started 12 minutes before Martin, finished second with a time that would have won most editions. Martin beat him by 1:15. That gap is not explained by power difference alone. It reflects the way the wind strengthened and swung, and the fact that Martin rode the course when the tailwind component on the long straight back to Rudersdal was at its peak.

Flat time trial course pacing is less forgiving than pacing a rolling parcours. On a hilly course, a rider can recover on descents. On a flat course, there is no free speed. Every second of coasting is a second lost to a rider who keeps the pedals turning. The Copenhagen course had three distinct sections: a headwind outbound leg, a crosswind middle sector with the only gentle rise, and a tailwind return that was the fastest stretch of the championship.

How To Ride Each Sector

Riders who paced this correctly started the outbound leg at a wattage 5 to 8% above their target average, because the headwind kept speeds lower and drag manageable. The middle sector was the danger zone. The crosswind and slight rise made it hard to hold a steady position, and the instinct to fight the bike burns energy without gaining speed. The return leg rewarded discipline. Riders who arrived at the final 15 km with reserves could push out high wattage because the tailwind made that effort translate directly into average speed, not just suffering.

The time trial distance for elite women was 27.8 km, a different pacing problem entirely. Shorter means harder, not easier. A 27.8 km effort is ridden closer to a rider's critical power, the maximum output they can sustain for about an hour, with much less margin for error. Judith Arndt's pacing reflected this: she was fastest at every intermediate check, a sign of a perfectly executed even split on a course where the wind profile demanded an uneven effort.

Tony Martin pacing 2011 became the reference ride for flat world championship time trials. His winning time of 53:43.85 over 46.4 km produced a time gap to second place of 1:15.83. That gap was the largest winning margin in the elite men's time trial since 2004, and it was built entirely on the second half of the course.

Martin's pacing can be reconstructed from the published split data. At 7.3 km he was 8.3 seconds down on the fastest split. At 17.2 km he had moved to within 3 seconds of the lead. By 30 km he was leading by 22 seconds. Over the final 16.4 km he added another 53 seconds. This is not a negative split, because the wind made the second half inherently faster. It is evidence that he did not overcook the first half. The riders who beat him early, including Fabian Cancellara who held the fastest 7.3 km split, all lost time relative to Martin from the midpoint onward.

Cancellara finished third, 1:20 behind Martin. His pacing was the classic flat-course error: a fast start into the headwind, a strong middle section, and then a fade as the tailwind arrived. The tailwind should be the reward for patience, but a rider who is already at their limit cannot use it. Cancellara's power output likely exceeded Martin's over the first 15 km, but the flat course does not care about early heroics. It cares about the time on the clock at 46.4 km.

Judith Arndt pacing 2011 across 27.8 km produced a winning margin of 21.73 seconds over Linda Villumsen in the elite women's time trial. That gap is smaller than Martin's, but the distance was 40% shorter, so small absolute differences represent larger percentage margins. Arndt's ride was the first world time trial title of her career, and it came on a course that rewarded her discipline.

The women's course used the same roads as the men's but a shorter out-and-back configuration. The pacing challenge was identical in character: headwind out, tailwind back. Arndt's splits tell the same story as Martin's, compressed into a shorter duration. She was not the fastest at the first check, but she took the lead by the second and held it through the finish. Her pacing was a near-perfect match to the wind profile, preserving enough to use the tailwind without leaving time on the course in the headwind sections.

The time trial distance difference between the men's and women's events is a UCI regulation, not a reflection of the course. The 27.8 km distance placed the women's race just under the hour mark for the fastest riders, making it a maximal aerobic effort rather than a longer endurance test. Arndt's average speed was lower than Martin's, but the physiological demand was comparable because the duration was similar. A flat course at 46.4 km and a flat course at 27.8 km are different races. Treating them as the same parcours misses the pacing distinction.

Weather on race day materially changed outcomes. The elite men's time trial ran on a cool afternoon with temperatures around 14°C and a wind that built from 12 km/h to 22 km/h over the course of the event. The wind direction shifted from a crosswind to a tailwind on the return leg as the afternoon progressed. Riders who started in the first half of the field faced a weaker tailwind but also less variable conditions. Riders in the final third, including the medal contenders, got the strongest tailwind but also the most unpredictable gusts on the exposed middle sector.

Start order in a UCI time trial is not a lottery. Defending champions start last. The top-ranked nations place their riders in the final slots. This is intended to give the strongest riders the most favourable conditions, but on a day when weather changes rapidly, it can backfire. In Copenhagen it amplified Martin's advantage because the wind swung in his favour, but it is easy to imagine a scenario where a late rain shower or a wind drop punishes the last starters instead. The official UCI records do not include weather data, but the split-time progression of the field makes the pattern clear.

The time gap to second place in the men's event was 1:15. In the women's it was 21 seconds. Both gaps are partly a function of pacing and partly a function of who got what wind. Wiggins in second place rode a time that would have won in calmer conditions. Villumsen's silver was 21 seconds behind Arndt, a margin that on a still day might have been half that. The flat course made the wind the decisive selector, not the parcours itself.

The Copenhagen 2011 elite time trials are a case study in one principle: on a flat course, pacing is wind management. Gradient is absent, so the only variables are air resistance and the rider's physiological limits. A pacing plan that works on a 7% climb, where power maps directly to vertical speed, fails on a flat road where a 20 km/h headwind makes a hard effort feel like a moderate one.

Martin's and Arndt's rides demonstrate that winning a flat time trial does not require the highest power output of the day. It requires the highest average speed, and average speed on a flat course is a function of how power is distributed relative to the wind, not how much power is produced in total. A rider who averages a high wattage but pushes much harder into the headwind and much easier with the tailwind will be slower than a rider who averages slightly less but holds a steadier effort in both directions. The Copenhagen course profile, with its long straight roads and open fields, punished the first rider and rewarded the second.

The UCI race regulations in 2011 specified a time trial distance of 46.4 km for elite men and 27.8 km for elite women. Those distances are not arbitrary. They are chosen to produce winning times of approximately one hour, which is the duration at which pacing errors are most costly. Shorter, and a rider can bluff through a bad start. Longer, and the event becomes a test of endurance more than pacing precision. Copenhagen hit the sweet spot, and the results show it.

The UCI official results for the Copenhagen 2011 time trials give finish times, split times, and average speeds. They do not give power data, wind speeds at each kilometre, or the precise lines riders took through corners. Those gaps matter. Team GPS data from the day shows that the measured time trial distance varied by up to 0.3 km depending on cornering lines, a normal variation that is rarely stated publicly. A rider who takes the shortest line through every corner gains three to five seconds over 46.4 km without producing an extra watt.

Spectator figures from the event are often cited, but no independent count was ever published. The course was open-access along most of its length, so any number is an estimate. What is certain is that the flat, urban course design of Rudersdal created long sightlines for spectators, but the lack of a major climb meant no single gathering point where the crowd density was high enough to affect rider perception. Riders reported feeling isolated, not carried by the noise, which is typical of flat time trial courses.

The legacy of the course is entirely sporting. No permanent cycling infrastructure was built as a result of the championships. The roads used for the time trial remain public roads in Rudersdal Municipality, indistinguishable from any other suburban Danish road. The event's memory lives in the UCI archives and in the palmares of Martin and Arndt, not in a physical monument. The claim that the event boosted everyday cycling in Copenhagen is not supported by any published participation data from the Danish Cycling Union.