| Lake Vyrnwy Sprint Tower to Rhiwargor | 6.50 km | 15 m | 0.1% |
| north side 1 | 1.97 km | -11 m | -0.2% |
| flat segment sprint | 0.96 km | 6 m | 0.5% |
| Lake Vyrnwy to top of Hirnant Pass | 3.88 km | 234 m | 6.0% |
| Lake Vyrnwy to the top of Hirnant pass | 4.20 km | 230 m | 5.3% |
| Harry Potter Scenery | 2.72 km | 181 m | 6.6% |
| B4403 Climb | 2.49 km | 176 m | 7.1% |
| descending Hirnant pass | 4.40 km | -198 m | -4.0% |
| hirnant pass descent (first section) | 1.67 km | -141 m | -8.5% |
| Hirnant - Rhos-y-gwaliau descent | 8.43 km | -284 m | -3.4% |
| Bala Lake South (Old Road) | 7.19 km | 36 m | 0.5% |
| Bala lake east side | 6.17 km | 39 m | 0.6% |
| Bwlch Long | 10.00 km | 362 m | 3.6% |
| bwlch-y-groes from llanuwchllyn | 8.60 km | 343 m | 3.4% |
| Llanwchllyn | 8.00 km | 346 m | 4.3% |
| B4403 Climb | 2.22 km | 148 m | 6.7% |
| Bwlch-y-Groes north approach, final climb | 3.39 km | 249 m | 7.3% |
| The climb past the biggest stone wall ever | 2.01 km | 161 m | 8.0% |
| Final section up to bwlych-y-groes | 1.79 km | 153 m | 8.2% |
| B4403 Climb | 1.63 km | 130 m | 7.9% |
| Bwich y Groes Full descent to Lake Vyrnw | 6.38 km | -294 m | -4.6% |
| Descent to Lake Vyrnwy | 5.96 km | -227 m | -3.7% |
| Bwlch y groes to Vyrnwy - Last descent | 2.55 km | -169 m | -6.6% |
| Lake Vyrnwy West Side | 7.05 km | -6 m | -0.0% |
| Lake Vyrnwy last stretch | 5.00 km | 41 m | 0.2% |
| west side 1 | 1.67 km | -35 m | -2.0% |
| Vyrnwy Bridge Sprint | 0.31 km | 1 m | 0.1% |
