The Bike Course in Ottawa: 180 km on Closed Parkways, But Don't Trust the Elevation Profile

The course in a nutshell

180 km on roads and parkways listed as fully closed to traffic, with two crossings of the Ottawa River on different bridges. The official layout says 2.75 laps. In 2025, though, race reports describe three laps of roughly 60 km, and a 2026 report describes yet another configuration. Practical translation: the lap changes between editions. The first thing to do, as soon as your year's athlete guide drops, is study the official map and memorize the turn points and the no-passing zones downtown.

Elevation gain: don't trust a single number

The official figure is about 695 m of climbing. Other sources range from 323 m to over 990 m. We don't know which number is "right," and we're saying that upfront. The sensible move is to treat the course the way every report agrees it rides: rolling. No real climbs, but constant rollers that add up over 180 km.

If you pick the low number and pace it "like a flat course," you risk burning watts on the false flats. What to do: choose a conservative, steady power or effort target, and handle the rollers with your gears, not with power spikes. On a course like this, minutes are lost in rollers taken too hard — they're not gained there.

Pavement and bottles: the Québec side is the critical spot

2025 reports describe the Québec-side section as "sporty": rough pavement, constant vibration, bottles ejected along the road by plenty of athletes. It's a double problem: you lose hydration in a race where humid heat is decisive, and you risk having to improvise at aid stations.

Concrete decisions:

• Use a secure hydration setup: a between-the-arms bottle or a frame-integrated system. Behind-the-saddle cages only if you've tested them on cobbles or light gravel.
• Don't go extreme on tire pressure. With wider tires and moderate pressures you lose almost nothing on smooth tarmac and gain control and comfort on the rough stuff.
• Secure everything: gels, tool kit, head unit. Whatever rattles off is gone.

Wind and bridges

The riverside sections are exposed, and in 2025 gusts hit 30 km/h, with crosswinds especially on the two bridges. If you ride very deep rims or a disc wheel, be honest with yourself about how stable you are in side gusts. Downtown there are narrow no-passing zones: don't plan to make up time there, and keep your distance from other athletes to avoid penalty risk.

Pacing by goal

Our rough estimates (not official data): 7:15 for a relaxed finisher, 6:20 for a mid-pack goal, 5:30 if you're chasing a fast time, 4:55 for top age-group. On a rolling course with wind, your final time comes down to consistency, not peak speed. Tools like pacing planners based on the course profile can help you simulate the effort before race day.

To-do list before the race

• Get in at least a few long rides on rough pavement with your full race setup: if a bottle ejects in training, better to know now.
• Test your aero position in crosswinds.
• Download the official map for your year as soon as it's available and compare it with reports from previous editions: if the lap has changed, adjust your plan.
• Decide in advance where you'll drink and where you'll eat: on the rough Québec-side sections, better to have hands on the bars and a settled stomach.