The
Day Report – Race and Power Analysis of the
USA
Pro Challenge
Stage 1 of the USA Pro Challenge kicked off today in beautiful Steamboat
Springs. Greeted by perfect temperatures of 73f, the first stage is one of the
most opportunistic stages in this year’s tour – a chance at the win for any of
the cyclists if they play their cards right.
The pivotal part of today’s stage was the “King of the Mountain” climb
that the riders climbed twice during the two-lap race. At just 2.3km and an
average gradient of 7%, this climb is a mere warm up for the rest of the week’s
action in the Rocky Mountains of Colorado, but being bracketed by two other
uncategorized climbs, this part of the course defined which sprinters were left
to contest the finish in Steamboat Springs: would it be the pure sprinters who
generally don’t like the climbs and high altitudes too much, or the “climbing
sprinters” who do well up hill and can dominate in a reduced group sprint.
Making the break on a stage such as this is a feat in itself. As you could imagine, 100 other riders all wanting the same thing meant strong competition just to make the move! It wasn’t until the third significant group went up the road at the 23km mark that the breakaway of the day was formed. 7 riders established a maximum lead of 4.5minutes and fought for the two KOM climbs on course. UnitedHealthcare Pro Cycling’s Jonny Clarke infiltrated the move and took enough KOM points on the day, to take the jersey of the best climber in the race. What did it take to make this happen?
By looking at Jonny’s power file from his Pioneer power meter, you can see
what happened in today’s stage. Early on there was a period of intense
attacking in order to form the first breakaway of the race. You can see that
Jonny was jumping around a little in this period highlighted by 3 accelerations
near 1000watts. During an 11 minute period at this point of the race, Jonny
averaged 352W, which when you take into account the effect of high altitude, was
an impressive effort. With the elevation of today’s stage in Steamboat Springs
at 7000ft, your lactate threshold is
diminished (your maximal sustained power for approximately 1 hour) by
approximately 7-8%.
The moment he chose to go across to the breakaway coincided with a lull in
the peloton, and asides from an initial acceleration of 677W over 27sec, his
traverse across wasn’t too difficult. At kilometer 35, we see Jonny launch an
early attack in an attempt to take the KOM points with 1min47sec at 504W. He
finished second in this mountain sprint.
From there you can clearly see on the file that Jonny went into
conservation mode, not expelling any excess energy in the breakaway so that the
peloton didn’t get too animated in their chase by an ever-increasing time gap,
and also to have fresher legs than the other riders coming into the second KOM
sprint. This time around, he waited a bit later, needing 1min17sec at 489W in
order to secure maximum points and the King of the Mountains jersey going into
stage 2.
 |
| Pioneer Cyclo-Sphere Pedaling analysis |
In the end, the pure sprinters didn’t make it over the final climb of the
day and just 43 riders contested the stage in downtown Steamboat Springs. BMC’s
comeback-kid Taylor Phinney took the win ahead of UnitedHealthcare’s Kiel
Reijnen.
Join us for inside footage of tomorrow’s stage 2 of the USA Pro Challenge
which will see the riders race from Steamboat Springs to a first time finish at
Arapahoe Basin, culminating with a final ascent of 7km at nearly 11,000ft.
