Routes
Southbridge Credit Union’s Tour Opacum provides cyclists with the opportunity to explore the beautiful towns and countryside of the Quaboag and Quinebaug river valleys, with proceeds from the ride supporting the charitable work of Opacum Land Trust, protecting local land, water, and wildlife in the region.
Routes have been updated for 2025 based on rider feedback. 100-Mile Century, Metric Century, Half-Metric Century, and the X Tour (approximately 10 miles) routes can be viewed HERE
All routes are on paved roads and fully marked.
Please note- routes are subject to change up to the event day, please check your email before the event for any changes.

100-Mile Century
Sponsored by Australian Natural Soap
100.7 miles, 7:00 am start
Looking for a challenge? Sponsored by Australian Natural Soap, our 100-Mile Century Tour is infamous not only for its beautiful, country roads and iconic New England scenery, but also for the hills! Think you’ve got what it takes? Sign up and find out!

Metric Century
Sponsored by St. Germain Investment Management
62.5 miles, 8:30 am start*
Ride the Metric Century, sponsored by St. Germain Investment Management, and take a tour of south central Massachusetts on 62 miles of beautiful, paved country roads.

Half-Metric Century
32.2 miles, 10:00 am start*
Ride the Half-Metric Century, and take a tour of south central Massachusetts on 31 miles of beautiful, paved country roads.

X Tour
10.1 miles, 11:00 am start
The X-Tour gives you all of the beauty and none of the hills (well almost none). Enjoy a beautiful 10-mile ride primarily in Brimfield.

2025 Pricing
Free beer from our co-hosts at Rapscallion Brewery, wine from Brimfield Winery, or a soft drink.
Please Note: Tour Opacum will be held rain or shine. We are unable to offer refunds and apologize for any inconvenience. Your registration is a charitable donation to help Opacum Land Trust with its conservation work.
Ride Registration |
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Register By: | Adults | Juniors (under 18) |
May 31st | $50 | $30 |
July 30th | $55 | $35 |
August 31st | $60 | $40 |
9/17- last day for online registration | $65 | $45 |
Walk-in registration starts at 6:00am on event day. | $70 | $50 |
Ride Registration
Ride Details
Opacum Conservation Properties Along the Tour
More information will be available about these properties and others that Opacum has protected at Tour Opacum. Be sure to check out the Opacum Info Table at the ride.
