| Out of bed. | 0.36 mi | 89 ft | 4.6% |
| Down Kings Head Hill | 0.61 mi | -135 ft | -4.2% |
| Kings Head Hill Short | 0.19 mi | -66 ft | -6.4% |
| Kings head to Southbury | 1.69 mi | 30 ft | 0.2% |
| Moses's dash | 0.70 mi | 16 ft | 0.2% |
| King Georges Resevoir | 0.87 mi | 16 ft | 0.1% |
| Big Tesco - Little Tesco | 1.25 mi | 46 ft | 0.7% |
| Southbury Tesco to Train Station | 0.12 mi | 23 ft | 3.5% |
| Southbury Road Slog | 0.66 mi | 36 ft | 0.9% |
| Holtwhites | 0.91 mi | 121 ft | 2.3% |
| Holtwhites Hill uphill to A1005 | 0.76 mi | 105 ft | 2.6% |
| Holtwhite's Ridgeway | 3.90 mi | 240 ft | 1.2% |
| The Ridgeway | 2.96 mi | 180 ft | 1.0% |
| Potters Bar High Street | 0.87 mi | 36 ft | 0.4% |
| Orchard Way Climb | 0.50 mi | 312 ft | 11.8% |
| RVC Stretch | 2.03 mi | -161 ft | -1.5% |
| RVC Campus Flyby Westwards | 1.15 mi | -75 ft | -1.0% |
| Hawkshead Lane Down | 0.68 mi | -72 ft | -1.9% |
| Royal Veterinary College to A414 Colney Health | 3.67 mi | -82 ft | -0.4% |
| Hawkshead Descent | 0.15 mi | -56 ft | -6.5% |
| Warrengate and Swanland from Hawkshead to Tollgate | 1.08 mi | -20 ft | -0.0% |
| A1 to long about | 2.21 mi | -46 ft | -0.2% |
| Tollgate Rd, a1 to Colney Heath | 1.37 mi | -43 ft | -0.4% |
| tollgate incline | 0.60 mi | 39 ft | 1.2% |
| Little Lump just to make sure the legs burn | 0.10 mi | -10 ft | -0.5% |
| Colney Heath Lane ascent | 1.04 mi | 66 ft | 1.1% |
| Hatfield Road incline to roundabout | 0.52 mi | 30 ft | 0.6% |
| Bridge Lights - Mermaid | 0.17 mi | 23 ft | 1.8% |
| Folly Lane | 0.58 mi | -92 ft | -2.9% |
| Folly Lane Downhill - Lights to Roundabout | 0.34 mi | -85 ft | -4.3% |
| Redbourn Road | 3.13 mi | 33 ft | 0.1% |
| Redbourne road to gaddesden | 6.30 mi | 210 ft | 0.6% |
| Hogg end lane to Redbourn | 1.51 mi | 26 ft | 0.3% |
| M1 to corner farm | 2.21 mi | 164 ft | 1.3% |
| Gaddesden Lower | 0.64 mi | 49 ft | 1.5% |
| Passed the Holtsmere turn | 0.83 mi | 72 ft | 1.6% |
| Holtsmere End Lane to Gaddesden Row (Gaddesden Lane) | 1.34 mi | 98 ft | 1.4% |
| Mount Gaddesden | 0.57 mi | 82 ft | 2.7% |
| Gaddesden Ln Hill Sprint | 0.13 mi | 23 ft | 3.4% |
| Gaddesden Sprint to the top! | 0.64 mi | 62 ft | 1.8% |
| Gaddesden lane top | 0.65 mi | 98 ft | 2.9% |
| Gaddesden Row Kilo - leg 1 | 0.72 mi | 30 ft | 0.8% |
| Gaddensden Row Down to Water End Run | 1.75 mi | -226 ft | -2.0% |
| red_lion_downhill | 0.56 mi | -144 ft | -4.9% |
| Nettleden road. | 0.90 mi | 30 ft | 0.6% |
| Nettleden Rd Climb | 0.32 mi | 367 ft | 21.6% |
| Nettleden Road Sprint. | 0.27 mi | 7 ft | 0.5% |
| Nettleden long Climb | 0.56 mi | 128 ft | 4.4% |
| Meadway to Bridge on Gravel Path | 0.33 mi | -167 ft | -9.6% |
| Billet to Durrants Blast | 0.24 mi | 7 ft | 0.2% |
