Breaking 3:05 at the Tamarack Ottawa Marathon
Even splits would be 4:23/km (7:03/mi). But Tamarack Ottawa Marathon isn't flat-even — the plan below redistributes the same finish time across the course the way experienced runners actually race it.
How to pace this course
0–15 km
Flat Ottawa River parkway — ideal for locking in goal pace from the gun
4:22/km (7:02/mi)
15–30 km
Rideau Canal section and turnaround — stay relaxed, conserve for the closing km
4:23/km (7:03/mi)
30–42.2 km
Return to downtown — the War Memorial finish is the reward; hold your pace to the end
4:24/km (7:05/mi)
Split table
| Checkpoint | Split | Elapsed | Pace at this point |
|---|---|---|---|
| 5 km | 21:52 | 21:52 | 4:22/km |
| 10 km | 21:52 | 43:43 | 4:22/km |
| 15 km | 21:52 | 1:05:35 | 4:22/km |
| 20 km | 21:54 | 1:27:30 | 4:23/km |
| Half | 4:49 | 1:32:18 | 4:23/km |
| 25 km | 17:06 | 1:49:24 | 4:23/km |
| 30 km | 21:54 | 2:11:18 | 4:23/km |
| 35 km | 22:01 | 2:33:19 | 4:24/km |
| 40 km | 22:01 | 2:55:20 | 4:24/km |
| Finish | 9:40 | 3:05:00 | 4:24/km |
Print this table or write the elapsed times on your arm — GPS pace is least reliable exactly when you need it most.