| Difficult Run to Amersham | 3,654.45 mi (5,881.27 km) |
| Difficult Run to Amesbury | 3,617.01 mi (5,821.02 km) |
| Difficult Run to Ammanford | 3,513.33 mi (5,654.15 km) |
| Difficult Run to Ampthill | 3,651.50 mi (5,876.52 km) |
| Difficult Run to Andover | 3,628.63 mi (5,839.72 km) |
| Difficult Run to Annan | 3,485.56 mi (5,609.47 km) |
| Difficult Run to Antrim | 3,375.76 mi (5,432.76 km) |
| Difficult Run to Appleton | 3,542.63 mi (5,701.32 km) |
| Difficult Run to Appley Bridge | 3,531.40 mi (5,683.23 km) |
| Difficult Run to Arbroath | 3,485.74 mi (5,609.76 km) |
| Difficult Run to Ardrossan | 3,416.10 mi (5,497.69 km) |
| Difficult Run to Armadale | 3,454.19 mi (5,558.98 km) |
| Difficult Run to Armthorpe | 3,598.07 mi (5,790.54 km) |
| Difficult Run to Arnold | 3,605.66 mi (5,802.75 km) |
| Difficult Run to Ascot | 3,657.52 mi (5,886.20 km) |
