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SF MARATHON 1ST HALF 2023

Chengxi Li

Berkeley, CA

Bib: 16808 M 23

0:00
0:00
/ mi
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Overall
#0 / 6072
Top 6%
Gender (Male)
#0 / 3331
Top 9%
M20-29
#0 / 333
Top 17%
Race Day Weather
60°/50°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
1.40M
7:26/mi
10:24
→ flat
11 ft elev
2.13M
15:04/mi
21:24
→ flat
13 ft elev
6.43M
9:10/mi
1:00:48
↑ 274↓ 780.9%
213 ft elev
6.62M
-28:-31/mi
55:34
↑ 161.6%
239 ft elev
10.65M
8:00/mi
1:27:47
↑ 153↓ 3611.0%
48 ft elev
Finish· 13.11 mi
7:40/mi
1:46:38
↑ 244↓ 1141.0%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
55:348:24 /mi+8.1%
2nd Half
51:047:52 /mi✓ faster
Negative split — 8.1% faster in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.40M
10:247:261.40 mi10:24
7:26
-
2.13M
21:2410:030.73 mi11:00
15:04
+7:38
6.43M
1:00:489:274.30 mi39:24
9:10
-5:54
6.62M
55:348:240.19 mi
-28:-31
-37:41
10.65M
1:27:478:154.03 mi32:13
8:00
+36:31
Finish(13.11 mi)
1:46:388:082.46 mi18:51
7:40
-0:20
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

-29:-31 /mi

Average Pace

8:08 /mi

Slowest Pace

15:04 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:46:38

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM20-29Seg. OverallSeg. MalesSeg. M20-29
1.40M1.40 mi4033315640333156
2.13M0.73 mi422-19341-1059-347936856
6.43M4.30 mi344+78279+6250+935028547
6.62M0.19 mi331+13271+844+6---
10.65M4.03 mi377-46304-3353-955044280
Finish(13.11 mi)2.46 mi390-13312-856-367754197

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 7%
~flat
+3ft-2ft

Overall

403

Males

331

M20-24

56

1.40M→2.13M

1.4 - 2.1 mi

Top 8%
~flat
+3ft-1ft

Overall

479

Males

368

M20-24

56

2.13M→6.43M

2.1 - 6.4 mi

Top 6%
×17story building
+274ft-78ft

Overall

350

Males

285

M20-24

47

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Males

-

M20-24

-

6.62M→10.65M

6.6 - 10.7 mi

Top 9%
×21story building
+153ft-361ft

Overall

550

Males

442

M20-24

80

10.65M→Finish

10.7 - 13.1 mi

Top 11%
×17story building
+244ft-114ft

Overall

677

Males

541

M20-24

97

Passing Analysis

Category:
Passed
183*
Passed By
170
Net Change
+13
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#403
1.40M → 2.13M3352-19#403#422
2.13M → 6.43M10022+78#422#344
6.43M → 6.62M2512+13#344#331
6.62M → 10.65M1460-46#331#377
10.65M → Finish11*24-13#377#390
TOTALS183*170+13

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

Passing Charts

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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

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