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SF MARATHON 1ST HALF 2025

Alina Tu

Irvine, CA

Bib: 16866 F 25

0:00
0:00
/ mi
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Overall
#0 / 7100
Gender (Female)
#0 / 3107
Division (F25-29)
#0 / 761
Race Day Weather
56°/46°F
light rain

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
1.81M
11:31/mi
20:51
→ flat
5.34M
11:58/mi
1:03:05
↑ 80↓ 74
6.15M
12:53/mi
1:13:31
↑ 126
10.54M
12:14/mi
2:07:15
↑ 230↓ 361
11.05M
17:44/mi
2:16:18
↑ 172
Finish· 13.11 mi
13:22/mi
2:43:50
↑ 97↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:13:3111:57 /mi⚡ faster
2nd Half
1:30:1912:59 /mi+22.9%
Positive split — 22.9% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.81M
20:5111:311.81 mi20:51
11:31
-
5.34M
1:03:0511:493.53 mi42:14
11:58
+0:27
6.15M
1:13:3111:570.81 mi10:26
12:53
+0:55
10.54M
2:07:1512:044.39 mi53:44
12:14
-0:39
11.05M
2:16:1812:200.51 mi9:03
17:44
+5:30
Finish(13.11 mi)
2:43:5012:302.06 mi27:32
13:22
-4:22
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

11:31 /mi

Average Pace

12:30 /mi

Slowest Pace

17:44 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

20:51

13% of race

Time at Steady Pace

2:13:56

82% of race

Time at Slower Pace

9:03

6% of race

Average Pace: 12:30 /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
1.81M1.81 mi6225258265762252582657
5.34M3.53 mi6092+1332497+85652+560402470654
6.15M0.81 mi6070+222489+8655-359282400636
10.54M4.39 mi5868+2022391+98635+2055942250608
11.05M0.51 mi5871-32387+4633+256342283604
Finish(13.11 mi)2.06 mi5876-52407-20639-659222509670

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 88%
~flat
+4ft-3ft

Overall

6225

Females

2582

F25-29

658

1.81M→5.34M

1.8 - 5.3 mi

Top 85%
×4story building
+80ft-74ft

Overall

6040

Females

2470

F25-29

655

5.34M→6.15M

5.3 - 6.2 mi

Top 83%
×10story building
+126ft-4ft

Overall

5928

Females

2400

F25-29

637

6.15M→10.54M

6.2 - 10.5 mi

Top 79%
×21story building
+230ft-361ft

Overall

5594

Females

2250

F25-29

608

10.54M→11.05M

10.5 - 11.1 mi

Top 79%
×14story building
+172ft-0ft

Overall

5634

Females

2283

F25-29

605

11.05M→Finish

11.1 - 13.1 mi

Top 83%
×7story building
+97ft-114ft

Overall

5922

Females

2509

F25-29

670

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 1.81M-#6225
1.81M → 5.34M
112245*+133
#6225 → #6092
5.34M → 6.15M
3557+22
#6092 → #6070
6.15M → 10.54M
56258*+202
#6070 → #5868
10.54M → 11.05M
3229-3
#5868 → #5871
11.05M → Finish
6762*-5
#5871 → #5876
TOTALS
302651*+349
#6225 → #5876

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

Passing Visualized

Category:
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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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