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SF MARATHON 1ST HALF 2024

Alexandra Collins

San Francisco, CA

Bib: 10502 F 27

0:00
0:00
/ mi
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Overall
#0 / 5177
Top 46%
Gender (Female)
#0 / 2293
Top 34%
Division (F25-29)
#0 / 585
Top 37%
Race Day Weather
56°/46°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2.13M
11:40/mi
24:51
→ flat
6.62M
9:29/mi
1:07:27
↑ 299↓ 78
7.12M
14:58/mi
1:14:56
↑ 27
10.65M
9:41/mi
1:49:06
↑ 127↓ 360
Finish· 13.11 mi
9:44/mi
2:13:03
↑ 244↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
1:07:2710:11 /mi+2.7%
2nd Half
1:05:3610:07 /mi✓ faster
Negative split — 2.7% 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
2.13M
24:5111:402.13 mi24:51
11:40
-
6.62M
1:07:2710:114.49 mi42:36
9:29
-2:11
7.12M
1:14:5610:310.50 mi7:29
14:58
+5:29
10.65M
1:49:0610:153.53 mi34:10
9:41
-5:17
Finish(13.11 mi)
2:13:0310:092.46 mi23:57
9:44
+0:03
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

9:29 /mi

Average Pace

10:09 /mi

Slowest Pace

14:58 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

1:40:43

76% of race

Time at Slower Pace

32:20

24% of race

Average Pace: 10:09 /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. DistOverallFemalesF25-29Seg. OverallSeg. FemalesSeg. F25-29
2.13M2.13 mi16834731271683473127
6.62M4.49 mi2016-333599-126169-422200693187
7.12M0.50 mi2147-131651-52182-1332781208343
10.65M3.53 mi2319-172743-92207-252716954267
Finish(13.11 mi)2.46 mi2385-66786-43219-122682978273

Segment Performance Analysis

Start → 2.13M

0.0 - 2.1 mi

Top 33%
~flat
+6ft-3ft

Overall

1683

Females

473

F25-29

129

2.13M→6.62M

2.1 - 6.6 mi

Top 42%
×19story building
+299ft-78ft

Overall

2200

Females

693

F25-29

189

6.62M→7.12M

6.6 - 7.1 mi

Top 63%
×2story building
+27ft-0ft

Overall

3278

Females

1208

F25-29

346

7.12M→10.65M

7.1 - 10.7 mi

Top 52%
×21story building
+127ft-360ft

Overall

2716

Females

954

F25-29

268

10.65M→Finish

10.7 - 13.1 mi

Top 52%
×17story building
+244ft-114ft

Overall

2682

Females

978

F25-29

273

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 2.13M-#1683
2.13M → 6.62M
38148*-333
#1683 → #2016
6.62M → 7.12M
14110-131
#2016 → #2147
7.12M → 10.65M
20533*-172
#2147 → #2319
10.65M → Finish
11246*-66
#2319 → #2385
TOTALS
839137*-702
#1683 → #2385

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

Passing Visualized

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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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Race Place Events