Long Course
Solo Triathlon Male Long Course
A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike on single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $75 $67.50 Race Fee + $5.05 SignUp Fee
- Registration:
- Price increases to $75.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $75 $67.50 Race Fee + $5.05 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $75.00 Race Fee + $5.50 SignUp Fee |
Solo Triathlon Female Long Course
A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike on single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $67.50 Race Fee + $5.05 SignUp Fee
- Registration:
- Price increases to $75.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| March 13, 2025, 1:37pm EDT | July 30, 2025, 11:58pm EDT | $67.50 Race Fee + $5.05 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $75.00 Race Fee + $5.50 SignUp Fee |
2 Person Relay Team Triathlon Long Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $115 $103.50 Race Fee + $7.21 SignUp Fee
- Registration:
- Price increases to $115.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $115 $103.50 Race Fee + $7.21 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $115.00 Race Fee + $7.90 SignUp Fee |
2 Person Junior (20 & under) Triathlon Long Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike single track trails.
Open to ages 20 and under.
- Start Time:
- 10:00am EDT
- Price:
- $88 $79.20 Race Fee + $5.75 SignUp Fee
- Registration:
- Price increases to $88.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $88 $79.20 Race Fee + $5.75 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $88.00 Race Fee + $6.28 SignUp Fee |
3 Person Relay Team Triathlon Long Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $180 $162.00 Race Fee + $10.72 SignUp Fee
- Registration:
- Price increases to $180.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $180 $162.00 Race Fee + $10.72 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $180.00 Race Fee + $11.80 SignUp Fee |
4 Person Relay Team Triathlon Long Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $220 $198.00 Race Fee + $12.88 SignUp Fee
- Registration:
- Price increases to $220.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $220 $198.00 Race Fee + $12.88 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $220.00 Race Fee + $14.20 SignUp Fee |
3 Woman Relay Team Triathlon Long Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 5.5 miles. The Running leg is a challenging 4 miles of single track trails and in the woods followed by a 7.5 mile mtn bike single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $180 $162.00 Race Fee + $10.72 SignUp Fee
- Registration:
- Price increases to $180.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $180 $162.00 Race Fee + $10.72 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $180.00 Race Fee + $11.80 SignUp Fee |
Short Course
Solo Triathlon Male Short Course
A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
Open to ages 21+.
- Start Time:
- 10:00am EDT
- Price:
- $75 $67.50 Race Fee + $5.05 SignUp Fee
- Registration:
- Price increases to $75.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $75 $67.50 Race Fee + $5.05 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $75.00 Race Fee + $5.50 SignUp Fee |
Solo Triathlon Female Short Course
A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $67.50 Race Fee + $5.05 SignUp Fee
- Registration:
- Price increases to $75.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| March 13, 2025, 1:37pm EDT | July 30, 2025, 11:58pm EDT | $67.50 Race Fee + $5.05 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $75.00 Race Fee + $5.50 SignUp Fee |
Solo Triathlon SUP Short Course
A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $75 $67.50 Race Fee + $5.05 SignUp Fee
- Registration:
- Price increases to $75.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $75 $67.50 Race Fee + $5.05 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $75.00 Race Fee + $5.50 SignUp Fee |
Solo Junior Triathlon Short Course
A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
Open to ages 20 and under.
- Start Time:
- 10:00am EDT
- Price:
- $55 $49.50 Race Fee + $3.97 SignUp Fee
- Registration:
- Price increases to $55.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $55 $49.50 Race Fee + $3.97 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $55.00 Race Fee + $4.30 SignUp Fee |
2 Person Relay Team Triathlon Short Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $115 $103.50 Race Fee + $7.21 SignUp Fee
- Registration:
- Price increases to $115.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $115 $103.50 Race Fee + $7.21 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $115.00 Race Fee + $7.90 SignUp Fee |
3 Person Relay Team Triathlon Short Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
- Start Time:
- 10:00am EDT
- Price:
- $180 $162.00 Race Fee + $10.72 SignUp Fee
- Registration:
- Price increases to $180.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $180 $162.00 Race Fee + $10.72 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $180.00 Race Fee + $11.80 SignUp Fee |
3 Person Junior (20 & under) Triathlon Short Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
Open to ages 20 and under.
- Start Time:
- 10:00am EDT
- Price:
- $132 $118.80 Race Fee + $8.13 SignUp Fee
- Registration:
- Price increases to $132.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $132 $118.80 Race Fee + $8.13 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $132.00 Race Fee + $8.92 SignUp Fee |
4 Grand Master 70+ Relay Team Triathlon Short Course
Teams must sign up together. A canoe/kayak/SUP, trail run and mountain bike triathlon, the Great River Challenge will offer a hilly off-road course on fun trails at the Northfield Mtn Environmental and Recreation Center. The paddle leg will be a mass start on the Connecticut river, paddling out and back and around Captain Kidd's Island over 4 miles. The Running leg is a challenging 2.5 miles of single track trails and in the woods followed by a 3.75 mile mtn bike on single track trails.
Open to ages 70+.
- Start Time:
- 10:00am EDT
- Price:
- $220 $198.00 Race Fee + $12.88 SignUp Fee
- Registration:
- Price increases to $220.00 after July 30, 2025 at 11:58pm EDT
| Registration Starting | Registration Ending | Price |
|---|---|---|
| February 25, 2025, 5:00am EST | July 30, 2025, 11:58pm EDT | $220 $198.00 Race Fee + $12.88 SignUp Fee |
| July 30, 2025, 11:59pm EDT | October 3, 2025, 8:00pm EDT | $220.00 Race Fee + $14.20 SignUp Fee |
This is a service fee for processing your race application. This may be slightly higher or lower per registrant than the amount shown here.
