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SF MARATHON 1ST HALF 2023

Alison Kong-Foon

Bib: 11548•F•Age: 24

Mountain View, CA

0:00
0:00
/ mi
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Overall
#0 / 6072
Gender (Female)
#0 / 2732
F20-29
#0 / 376
Race Day Weather
60°/50°F
overcast clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
1.40M
8:53/mi
12:26
→ flat
2.13M
20:27/mi
27:22
→ flat
6.43M
13:56/mi
1:27:15
↑ 274↓ 780.9%
6.62M
-41:-51/mi
1:19:29
↑ 161.6%
10.65M
12:35/mi
2:10:12
↑ 153↓ 3611.0%
Finish· 13.11 mi
12:58/mi
2:42:06
↑ 244↓ 1141.0%

The Course

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Half Splits

1st Half· via 6.62MFaster
Distance6.62 mi
Time1:19:29
Pace12:00 /mi
2nd Half
Distance6.49 mi
Time1:22:37
Pace12:44 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.40M
1.40 mi06:45:3312:268:5312:26
8:53
-
2.13M
2.13 mi07:00:2927:2212:5114:56
20:27
+11:34
6.43M
6.43 mi08:00:221:27:1513:3459:53
13:56
-6:31
6.62M
6.62 mi07:52:361:19:2912:00
-41:-51
-55:47
10.65M
10.65 mi08:43:192:10:1212:1450:43
12:35
+54:26
Finish
13.11 mi09:15:132:42:0612:2231:54
12:58
+0:23

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

-42:-51 /mi

Average Pace

12:22 /mi

Slowest Pace

20:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:06

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 12:22 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
1.40M
1.40 mi06:45:3312:268:5312:26
8:53
#2189
2.13M
2.13 mi07:00:2927:2212:5114:56
20:27
#3129
6.43M
6.43 mi08:00:221:27:1513:3459:53
13:56
#4383
6.62M
6.62 mi07:52:361:19:2912:00
-41:-51
#4372
10.65M
10.65 mi08:43:192:10:1212:1450:43
12:35
#4827
Finish
13.11 mi09:15:132:42:0612:2231:54
12:58
#4947
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
1.40M1.40 mi1.40 mi21897071232189(Top 36%)707(Top 26%)123(Top 33%)
2.13M2.13 mi0.73 mi3129-9401128-421201-784122(Top 68%)1614(Top 59%)278(Top 74%)
6.43M6.43 mi4.30 mi4383-12541719-591285-844866(Top 80%)2011(Top 74%)312(Top 83%)
6.62M6.62 mi0.19 mi4372+111714+5279+6---
10.65M10.65 mi4.03 mi4827-4551979-265316-375289(Top 87%)2287(Top 84%)339(Top 90%)
Finish13.11 mi2.46 mi4947-1202058-79325-95392(Top 89%)2340(Top 86%)345(Top 92%)

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 36%
~flat
+3ft-2ft

Overall

2189

Females

707

F20-24

123

1.40M→2.13M

1.4 - 2.1 mi

Top 68%
~flat
+3ft-1ft

Overall

4122

Females

1614

F20-24

278

2.13M→6.43M

2.1 - 6.4 mi

Top 80%
×17story building
+274ft-78ft

Overall

4866

Females

2011

F20-24

312

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Females

-

F20-24

-

6.62M→10.65M

6.6 - 10.7 mi

Top 87%
×21story building
+153ft-361ft

Overall

5289

Females

2287

F20-24

339

10.65M→Finish

10.7 - 13.1 mi

Top 89%
×17story building
+244ft-114ft

Overall

5392

Females

2340

F20-24

345

Passing Analysis

Category:
Athletes Passed
185*
Passed By
2943
Net Change
-2758
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#2189
1.40M → 2.13M18958-940#2189#3129
2.13M → 6.43M39*1293-1254#3129#4383
6.43M → 6.62M7665+11#4383#4372
6.62M → 10.65M23*478-455#4372#4827
10.65M → Finish29*149-120#4827#4947
TOTALS185*2943-2758

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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The San Francisco Marathon

The San Francisco Marathon

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