| Stevenage Road - South | 1.29 km | 24 m | 1.6% |
| AIT Test 2 | 1.22 km | 27 m | 1.2% |
| South into Knebworth | 1.34 km | 22 m | 0.3% |
| Stevenage Road South - Pure Uphill | 0.67 km | 25 m | 3.5% |
| Mardley Short Hill | 0.69 km | 23 m | 3.2% |
| Chequers - Clock (S) | 2.83 km | -44 m | -0.7% |
| Mardley Hill | 0.45 km | 18 m | 3.8% |
| Heath Road to Mardley Hill Peak | 0.32 km | 12 m | 3.5% |
| Mardley Hill Descent Towards Welwyn | 2.39 km | -42 m | -1.7% |
| B197 towards Welwyn | 1.54 km | -18 m | -1.1% |
| Oaklands School to A1M | 1.26 km | -8 m | -0.7% |
| Kimpton Road from Welwyn | 0.54 km | 12 m | 0.4% |
| Saint Albans Road | 0.47 km | 6 m | 0.9% |
| Codicote to Dowdells drag | 1.29 km | 30 m | 2.3% |
| Codicote Rd, Hursting's Wood | 0.80 km | 31 m | 3.6% |
| Codicote Rd SW Drag (Kimpton to AStP Rd) | 1.07 km | 29 m | 2.4% |
| Kimpton Junction to End of Codicote | 3.89 km | 27 m | 0.5% |
| codicote ford to wheaty | 3.69 km | 24 m | 0.5% |
| Ayot St Peter Rd end to Wheaty | 2.78 km | -17 m | -0.4% |
| Cory Wright Way Eastwards | 1.21 km | 19 m | 0.4% |
| Marford road climb Eastbound | 0.34 km | 16 m | 4.6% |
| Marford Road - Cory Wright Way to Green Lanes | 3.20 km | -32 m | -0.3% |
| Towards Lemsford | 2.69 km | -20 m | -0.7% |
| Lemsford Descent | 0.80 km | -17 m | -2.1% |
| Great North Road | 1.59 km | 57 m | 3.6% |
| Great North Rd Digswell Hill Drag | 2.97 km | 54 m | 0.6% |
| Digswell hill. | 1.66 km | 56 m | 3.3% |
| Digswell Hill (Down) | 1.35 km | -35 m | -2.6% |
| OLD VERSION - B197 A1(M) to Oaklands | 1.65 km | 18 m | 0.9% |
| Mardley Hill South | 0.87 km | 29 m | 3.2% |
| Mardley Hill | 0.87 km | 41 m | 4.7% |
| Tilbury Dash | 1.66 km | 19 m | 0.6% |
| Bury Lane - Datchworth | 1.55 km | 21 m | 1.2% |
