Boston Triathlon

Pick-Up and Drop - off Convenience

When you book a bicycle with Unlimited Biking for Boston Triathlon, you have the option to pick up your bike near the transition area on Saturday for the Mandatory bike check-in, at the end of race, drop it off with our on-site team there as well.

Free Helmets

As you may know, participation in the Boston Triathlon requires that everyone must wear a helmet for the duration of the race. For your convenience, every one of our rentals comes with a Cannondale helmet at no additional charge.

Pedal Installment and Seat Adjustments

Our bikes come equipped with standard flat pedals to meet the needs of most riders. If you prefer your own pedals, we're happy to install them for you—just remember to bring them along when you pick up your bike.

Our on-site team is also available to assist with seat adjustments, ensuring your bike is comfortable and ready for the ride!

Home | Events | Boston Triathlon

About

Experience Boston’s Only Triathlon!

Be a part of a premier athletic event in one of the world’s most iconic cities. The Boston Triathlon offers a weekend of exciting events for participants and spectators alike.

About Ethos

The mission at ethos, the organizing body, is to unite athletes through challenging and distinctive sporting events held in cities across the globe. Their dedicated team works year-round to inspire and draw triathletes from Boston and worldwide to compete in top-tier events such as the Boston Triathlon.

About the Boston Triathlon

Participants in the Boston Triathlon will have the unique opportunity to swim in Boston’s historic Dorchester Bay, cycle through its vibrant city streets, and run along the picturesque shoreline of Southie. The course is designed to be spectator-friendly, easily accessible, and offers ample parking.

Make the Boston Triathlon a highlight of your summer. Whether you are aiming to test your endurance, support a meaningful cause, explore the city, or cheer on fellow athletes, Boston’s exclusive triathlon extends a warm welcome to all.

Bike Rental information*:

All bikes must be booked in advance, simply click on the link below to reserve your bike.

There are two available bike rental pickup options:

Saturday at the Packet Pickup (12 PM- 4PM): That will be the day before the triathlon, between 12 PM- 4 PM. We think that is the best option so you can avoid the morning rush. The organizers have the transition area available on Saturday so you can simply check-in your bike at the transition area to stay overnight at the race site and you show up on Sunday ready to ride.
Sunday the morning of the race: Your bike will be ready for pickup in the morning of the ride as early as 5:30 AM. If you can’t make it Saturday then this a great option for you.

During bike rental pickup, we are happy to assist with height adjustments, pedal installation on road bikes if needed, and provide you with a free helmet.

Note for Road Bikes Rentals: All our road bikes come with standard flat pedals. If you prefer specific pedals compatible with your cycling shoes, please bring them with you, and we can install them on your rental bike.

Bike Shipping Concierge*

Prefer to ride your own bike? Our Bike Shipping Concierge service makes it easy. Ship your bike to us, and our professional mechanics will assemble it and have it ready for you to pick up on Saturday at Boston Triathlon event site during the packet pickup. After the ride, drop off your bike with our team at the event where we’ll disassemble, pack, and ship it back to you. Shipping costs are not included.

Click here to book our Bike Shipping Concierge service!

*Services are subject to our cancellation policy. Learn more in our FAQ below.

DATE

Aug 16 - Aug 17, 2025

LOCATION

Carson Beach, Boston, MA

Get directions from Google Maps

ORGANIZED BY

Boston Triathlon

Rent Our Bikes

Cannondale or similar CAAD Aluminum Road Bike

$149 RESERVE NOW

Cannondale or similar Carbon Synapse Road Bike

$249 RESERVE NOW

Cannondale or Similar System Six Carbon Aero Bike

$599 RESERVE NOW

Specialized or similar Hybrid Straight Frame Bike

$59 RESERVE NOW

Cannondale or Specialized Lady Bike

$59 RESERVE NOW

Concierge/Bike Shipping

Your own bike RESERVE NOW

FAQs

What is the Cancellation Policy for Bike Rentals at this Event?

Bike Event Rental Cancellation Policy

Canceling a booking with Unlimited Biking can result in cancellation fees being applied by Unlimited Biking, as outlined below. When canceling any booking you MUST email [email protected] to request the cancellation with your reservation details.

100% refund until 90 days before the event
50% refund until 60 days before the event
0% refund 30 days before the event

You always have the option to use your credit with us in stores or towards next year’s rental.

What is included with the rental?

Each rental includes a bike, a helmet, and convenient pickup and drop-off options.

What is included with each bike?

Hybrid Bikes: Comes with one water bottle cage, a handlebar bag, a quick-release adjustable seatpost, and flat pedals.
Road Bikes & Carbon Bikes: Comes with two water bottle cages, a handlebar bag, and standard flat pedals.
eBikes: Comes with handlebar bag, a quick-release adjustable seatpost, and flat pedals and a fully charged battery.
Tandem Bike: Comes with two water bottle cages, one for each rider, a handlebar bag, and standard flat pedals.

What is a Hybrid bike?

A Hybrid bike combines features of road bikes, touring bikes, and mountain bikes, making it versatile and suitable for a variety of terrains. Hybrid bikes are designed for general-purpose riding over various surfaces, offering a balance of comfort and performance. They typically have medium-width tires for better grip and stability, an upright riding position for comfort, and a lightweight frame for ease of handling. Hybrid bikes are an excellent choice for casual rides, commuting, and recreational cycling.

How do I select the right bike type for me?

We offer a variety of bike types to suit different riding styles, routes and preferences. Here’s a quick guide:
- Hybrid Step-through Bike: Designed for comfort and leisure, this bike features a step-through frame for easy mounting, an upright riding position, and 2″ wide tires. Ideal for short, relaxed rides.
- Hybrid Straight Frame Bike: Balancing comfort and performance, this bike has a traditional top bar frame and road tires. It’s lighter than the step-through model, making it well-suited for most event routes.
- CAAD Aluminum Road Bike: A performance-focused bike made of aluminum frame and has rim brakes. Perfect for longer or faster rides, especially distances of 50 miles or more. It’s ideal for riders with specific pedal preferences.
- Carbon Synapse Road Bike: Our top-performing model with a carbon frame, offering unparalleled speed, responsiveness, and ride quality. It comes with disc brakes and It’s the lightest bike we offer. Perfect for those seeking maximum performance.

What is the right bike size for me?

Bike sizes depend on the model. When booking, you’ll see size options listed along with the corresponding height ranges to help you select the right fit.

What if I need a helmet but didn’t request one?

Helmets are included at no extra cost. As helmets are mandatory for the event, we ensure there are plenty available for all riders.

What can I fit into the bike bag?

The handlebar bike bag can hold small items such as a water bottle, a set of keys, a phone, and a tube kit. Dimensions are approximately 9 inches wide by 5 inches in diameter, with a zip closure.

What is the size of the tube?

Hybrid Step-throughBike: 700x38c
Hybrid Straight frame Bike: 700x35c
CAAD Road Bike: 700x25c
Carbon Bikes: 700x28c
Kids 24-inch Bike: 24 x 1.5”
Kids 20-inch Bike: 20 x 1.75”
Tandem Bike: 26 x 1.5”

Do you provide spare tubes in case I get a flat?

We do not provide spare tubes with rentals. If you experience a flat tire during the ride, we recommend reaching out to the event’s ride support team for assistance. It’s always a good idea to carry a spare tube that fits your bike, as we strongly recommend being prepared for such situations.