Lima 70.3 Race Day: Timeline, Common Mistakes, and Plan Bs

Race week: the days that count

Race day is Sunday, April 25, 2027, based at the Club de Regatas Lima in Chorrillos. Official times for registration, the briefing, bike check-in, and transition opening are not available in the sources consulted: the official site has dedicated pages for race week, pre race info, and the schedule, and the athlete guide will be the definitive document. Download it as soon as it drops and build your timeline off that.

The typical framework to plan around, to be adjusted to the official times:

• 3-4 days out: arrival, bike build, first acclimation swim at Agua Dulce in your wetsuit. Water at 19-21 °C (some sources say 17-19 °C) needs to be tested beforehand, not discovered at the start.
• 2 days out: registration, a bike recon of a section of the course, briefing.
• Day before: bike and bag check-in, then feet up. No standing around sightseeing for hours.

Open questions to close out at the briefing

This race has some documented uncertainties across the sources, and the briefing is where you resolve them:

• Swim laps: the official page lists a single lap in very calm conditions; a 2026 preview mentions 2 laps with current and small waves. They also diverge on water temperature (19-21 °C versus 17-19 °C).
• Run laps: the official page lists 3 out-and-back laps; other sources say 1 or 2.
• Cutoff times: not published on the pages consulted.

These aren't details: they change your pacing, your aid station strategy, and the plan for whoever's coming to watch you. Note down the answers and update your plan the night before.

Race morning

Rolling start from Agua Dulce beach. The mild late-April weather (lows around 19 °C) makes the morning manageable, but the wait on the beach before entering cool water calls for an old throwaway layer to ditch at the start. Get to transition with time to spare: pump your tires, check your gearing, set up your nutrition, memorize the routes in and out of the change zone. Then a short warm-up and line up in the start corral based on your predicted swim time, honestly.

This race's typical mistakes

• Cool water shock. Diving cold into 17-21 °C water without acclimating shortens your breath in the first 300 meters. Splash your face and neck before the start and go out controlled.
• First-lap euphoria on the bike. With a tailwind, your speed lies to you. Burn the first lap and you'll pay on the last two into the headwind, and then on the half marathon.
• Losing count of laps. Three laps on the bike, maybe more laps on the run: count them yourself with a simple system (rubber bands on the bars, counting out loud at each pass).
• Underestimating the sun. 22 °C seems like nothing, but a shadeless oceanfront and ocean glare for hours are a real load. Sunscreen in T1 and T2, cap in the run bag.

Plan Bs: decide them in advance

• Rough sea or current at the start: if the 2026 preview is right about waves and current, your swim split could stretch by minutes. Don't chase the schedule: the swim is the shortest leg, manage it and make it back later.
• Strong wind on the bike: cut your power target by the margin you've established in training and accept a slower split. You get the time back on the run, on a course built for running.
• Mechanical: on a 30 km loop repeated 3 times you're never that far from transition, but still carry the minimum to sort yourself out: tube or sealant, CO2 cartridges, tire levers.
• Bad day: with mild weather and a flat course, this is a race you can bring home even just managing it. Downgrading your goal from "time" to "finisher" is a decision, not a surrender: make it early, not at km 15 of the run.

The final rule: in Lima the stated conditions are among the most favorable an age-grouper could ask for. The only thing that can ruin your day is you, in the first 50 km on the bike.