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SF MARATHON 1ST HALF 2025

Yucan Chiu

New York, NY

Bib: 17803 M 47

0:00
0:00
/ mi
Masters
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Overall
#0 / 7100
Gender (Male)
#0 / 3977
Masters (Masters Men)
#0 / 1096
Division (M45-49)
#0 / 282
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
10:56/mi
19:47
→ flat
5.34M
11:48/mi
1:01:27
↑ 80↓ 74
6.15M
12:40/mi
1:11:42
↑ 126
10.54M
13:18/mi
2:10:06
↑ 230↓ 361
11.05M
14:03/mi
2:17:16
↑ 172
Finish· 13.11 mi
16:04/mi
2:50:22
↑ 97↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:11:4211:40 /mi⚡ faster
2nd Half
1:38:4014:11 /mi+37.6%
Positive split — 37.6% 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
19:4710:561.81 mi19:47
10:56
-
5.34M
1:01:2711:303.53 mi41:40
11:48
+0:52
6.15M
1:11:4211:400.81 mi10:15
12:40
+0:52
10.54M
2:10:0612:214.39 mi58:24
13:18
+0:38
11.05M
2:17:1612:250.51 mi7:10
14:03
+0:45
Finish(13.11 mi)
2:50:2213:002.06 mi33:06
16:04
+2:01
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:56 /mi

Average Pace

13:00 /mi

Slowest Pace

16:04 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

1:01:27

36% of race

Time at Steady Pace

1:15:49

45% of race

Time at Slower Pace

33:06

19% of race

Average Pace: 13:00 /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. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
1.81M1.81 mi5612338422556123384225
5.34M3.53 mi5805-1933451-67231-658933488234
6.15M0.81 mi5799+63455-4228+357573440223
10.54M4.39 mi6079-2803564-109240-1263163636245
11.05M0.51 mi5950+1293506+58232+832472167128
Finish(13.11 mi)2.06 mi6231-2813614-108240-867933821272

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 79%
~flat
+4ft-3ft

Overall

5612

Males

3384

M45-49

226

1.81M→5.34M

1.8 - 5.3 mi

Top 83%
×4story building
+80ft-74ft

Overall

5893

Males

3488

M45-49

235

5.34M→6.15M

5.3 - 6.2 mi

Top 81%
×10story building
+126ft-4ft

Overall

5757

Males

3440

M45-49

224

6.15M→10.54M

6.2 - 10.5 mi

Top 89%
×21story building
+230ft-361ft

Overall

6316

Males

3636

M45-49

245

10.54M→11.05M

10.5 - 11.1 mi

Top 46%
×14story building
+172ft-0ft

Overall

3247

Males

2167

M45-49

128

11.05M→Finish

11.1 - 13.1 mi

Top 96%
×7story building
+97ft-114ft

Overall

6793

Males

3821

M45-49

272

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 1.81M-#5612
1.81M → 5.34M
345152*-193
#5612 → #5805
5.34M → 6.15M
4854+6
#5805 → #5799
6.15M → 10.54M
33555*-280
#5799 → #6079
10.54M → 11.05M
4133+129
#6079 → #5950
11.05M → Finish
29817*-281
#5950 → #6231
TOTALS
1030411*-619
#5612 → #6231

* 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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