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SF MARATHON 1ST HALF 2025

Chunhung Tseng

Santa Clara, CA

Bib: 12405 M 42

0:00
0:00
/ mi
Masters
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Overall
#0 / 7100
Top 42%
Gender (Male)
#0 / 3977
Masters (Masters Men)
#0 / 1096
Top 42%
Division (M40-44)
#0 / 336
Race Day Weather
56°/46°F
light rain

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
1.81M
9:35/mi
17:21
→ flat
12 ft elev
5.34M
9:34/mi
51:08
↑ 80↓ 74
19 ft elev
6.15M
9:32/mi
58:51
↑ 1262.8%
149 ft elev
10.54M
9:46/mi
1:41:44
↑ 230↓ 3610.6%
20 ft elev
11.05M
15:21/mi
1:49:34
↑ 1726.4%
213 ft elev
Finish· 13.11 mi
11:23/mi
2:13:01
↑ 97↓ 1140.2%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
58:519:34 /mi⚡ faster
2nd Half
1:14:1010:39 /mi+26.0%
Positive split — 26.0% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi06:53:1417:219:3517:21
9:35
-
5.34M
5.34 mi07:27:0151:089:3533:47
9:34
-0:01
6.15M
6.15 mi07:34:4458:519:347:43
9:32
-0:02
10.54M
10.54 mi08:17:371:41:449:3942:53
9:46
+0:14
11.05M
11.05 mi08:25:271:49:349:557:50
15:21
+5:35
Finish
13.11 mi08:48:542:13:0110:0923:27
11:23
-3:58

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

9:32 /mi

Average Pace

10:09 /mi

Slowest Pace

15:21 /mi

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Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

1:41:44

76% of race

Time at Slower Pace

31:17

24% of race

Average Pace: 10:09 /mi

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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.

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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
1.81M
1.81 mi06:53:1417:219:3517:21
9:35
#3033
5.34M
5.34 mi07:27:0151:089:3533:47
9:34
#2803
6.15M
6.15 mi07:34:4458:519:347:43
9:32
#2667
10.54M
10.54 mi08:17:371:41:449:3942:53
9:46
#2621
11.05M
11.05 mi08:25:271:49:349:557:50
15:21
#2731
Finish
13.11 mi08:48:542:13:0110:0923:27
11:23
#2982
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
1.81M1.81 mi1.81 mi3033210018730332100187
5.34M5.34 mi3.53 mi2803+2301959+141172+1527471923171
6.15M6.15 mi0.81 mi2667+1361883+76168+420261517129
10.54M10.54 mi4.39 mi2621+461857+26164+425881830161
11.05M11.05 mi0.51 mi2731-1101908-51165-141702641222
Finish13.11 mi2.06 mi2982-2512041-133177-1242962651224

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 43%
~flat
+4ft-3ft

Overall

3033

Males

2100

M40-44

187

1.81M→5.34M

1.8 - 5.3 mi

Top 39%
×4story building
+80ft-74ft

Overall

2747

Males

1923

M40-44

171

5.34M→6.15M

5.3 - 6.2 mi

Top 29%
×10story building
+126ft-4ft

Overall

2026

Males

1517

M40-44

129

6.15M→10.54M

6.2 - 10.5 mi

Top 36%
×21story building
+230ft-361ft

Overall

2588

Males

1830

M40-44

161

10.54M→11.05M

10.5 - 11.1 mi

Top 59%
×14story building
+172ft-0ft

Overall

4170

Males

2641

M40-44

222

11.05M→Finish

11.1 - 13.1 mi

Top 61%
×7story building
+97ft-114ft

Overall

4296

Males

2651

M40-44

224

Passing Analysis

Category:
Athletes Passed
665*
Passed By
614
Net Change
+51
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#3033
1.81M → 5.34M322*92+230#3033#2803
5.34M → 6.15M1426+136#2803#2667
6.15M → 10.54M165*119+46#2667#2621
10.54M → 11.05M14124-110#2621#2731
11.05M → Finish22*273-251#2731#2982
TOTALS665*614+51

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

Passing Charts

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

Race Place Events

Race Place Events