Chalfont Park

Chalfont St Peter Cricket Club, Chalfont Park Sports Association, Chalfont Park, SL9 0QA · Map

Course 1 10.97 km loop

9am start · course closes 6pm (9 hours)
Roughly 80% trail and 20% road, through public footpaths and woodland.

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 10.97 km 575 ft climb 38–100 m elevation
DistanceLapsActual
10K1lap11.0 km
Half Marathon2laps21.9 km
32K3laps32.9 km
Marathon4laps43.9 km
34 Mile Ultra5laps54.9 km
41 Mile Ultra6laps65.8 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 1 route

Course 2 11.14 km loop

9am start · course closes 6pm (9 hours)
Roughly 80% trail and 20% road, through public footpaths and woodland.

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 11.14 km 500 ft climb 38–111 m elevation
DistanceLapsActual
10K1lap11.1 km
Half Marathon2laps22.3 km
32K3laps33.4 km
Marathon4laps44.6 km
34 Mile Ultra5laps55.7 km
41 Mile Ultra6laps66.8 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 2 route

Course 3 10.82 km loop

9am start · course closes 6pm (9 hours)
Roughly 80% trail and 20% road, through public footpaths and woodland.

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 10.82 km 360 ft climb 40–114 m elevation
DistanceLapsActual
10K1lap10.8 km
Half Marathon2laps21.6 km
32K3laps32.5 km
Marathon4laps43.3 km
34 Mile Ultra5laps54.1 km
41 Mile Ultra6laps64.9 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 3 route

Chalfont St Peter

Chalfont St Peter Community Centre, Gravel Hill, SL9 9QX · Map

Course 4 7.32 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 7.32 km 355 ft climb 41–102 m elevation
DistanceLapsActual
7K1lap7.3 km
14K2laps14.6 km
Half Marathon3laps22.0 km
28K4laps29.3 km
35K5laps36.6 km
Marathon6laps43.9 km
31 Mile Ultra7laps51.2 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 4 route

Course 5 7.22 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 7.22 km 385 ft climb 41–114 m elevation
DistanceLapsActual
7K1lap7.2 km
14K2laps14.4 km
Half Marathon3laps21.7 km
28K4laps28.9 km
35K5laps36.1 km
Marathon6laps43.3 km
31 Mile Ultra7laps50.5 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 5 route

Course 6 7.57 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 7.57 km 310 ft climb 49–111 m elevation
DistanceLapsActual
7K1lap7.6 km
14K2laps15.1 km
Half Marathon3laps22.7 km
28K4laps30.3 km
35K5laps37.9 km
Marathon6laps45.4 km
32 Mile Ultra7laps53.0 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 6 route

Course 12 5.47 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 5.47 km 255 ft climb 40–70 m elevation
DistanceLapsActual
5K1lap5.5 km
10K2laps10.9 km
15K3laps16.4 km
Half Marathon4laps21.9 km
27K5laps27.4 km
33K6laps32.8 km
38K7laps38.3 km
Marathon8laps43.8 km
30 Mile Ultra9laps49.2 km
34 Mile Ultra10laps54.7 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 12 route

Old Amersham

Amersham Cricket Club, Shardeloes, Shardeloes, Missenden Road, HP7 0RN · Map

Course 7 7.37 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 7.37 km 320 ft climb 97–174 m elevation
DistanceLapsActual
7K1lap7.4 km
14K2laps14.7 km
Half Marathon3laps22.1 km
28K4laps29.5 km
35K5laps36.9 km
Marathon6laps44.2 km
32 Mile Ultra7laps51.6 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 7 route

Course 8 5.47 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 5.47 km 240 ft climb 106–182 m elevation
DistanceLapsActual
5K1lap5.5 km
10K2laps10.9 km
15K3laps16.4 km
Half Marathon4laps21.9 km
27K5laps27.4 km
33K6laps32.8 km
38K7laps38.3 km
Marathon8laps43.8 km
30 Mile Ultra9laps49.2 km
34 Mile Ultra10laps54.7 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 8 route

Sarratt

Sarratt Village Hall, The Green, WD3 6AS · Map

Course 9 7.60 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 7.60 km 450 ft climb 55–124 m elevation
DistanceLapsActual
7K1lap7.6 km
14K2laps15.2 km
Half Marathon3laps22.8 km
28K4laps30.4 km
35K5laps38.0 km
Marathon6laps45.6 km
33 Mile Ultra7laps53.2 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 9 route

Chesham

Chesham & District Community Association, White Hill Centre, White Hill, HP5 1AG · Map

Course 10 5.48 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 5.48 km 235 ft climb 125–159 m elevation
DistanceLapsActual
5K1lap5.5 km
10K2laps11.0 km
15K3laps16.4 km
Half Marathon4laps21.9 km
27K5laps27.4 km
33K6laps32.9 km
38K7laps38.4 km
Marathon8laps43.8 km
30 Mile Ultra9laps49.3 km
34 Mile Ultra10laps54.8 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 10 route

Course 11 7.52 km loop

9am start · course closes 5pm (8 hours)

Start and finish marked. Drag to pan, and use the buttons or ctrl-scroll to zoom.

One lap · 7.52 km 410 ft climb 110–176 m elevation
DistanceLapsActual
7K1lap7.5 km
14K2laps15.0 km
Half Marathon3laps22.6 km
28K4laps30.1 km
35K5laps37.6 km
Marathon6laps45.1 km
32 Mile Ultra7laps52.6 km

Distance guaranteed. Whole laps mean every distance runs slightly over the standard figure — never under. Your marathon counts.

Download GPX — Course 11 route

Only one course runs on any given race day — check the race you're entering. See the race calendar