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SF MARATHON 1ST HALF 2025

Nora Chen

Alameda, CA

Bib: 17168 F 21

0:00
0:00
/ mi
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Overall
#0 / 7100
Gender (Female)
#0 / 3107
F20-29
#0 / 410
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
11:31/mi
20:50
→ flat
12 ft elev
5.34M
12:40/mi
1:05:32
↑ 80↓ 74
19 ft elev
6.15M
14:28/mi
1:17:15
↑ 1262.8%
149 ft elev
10.54M
14:31/mi
2:21:00
↑ 230↓ 3610.6%
20 ft elev
11.05M
19:36/mi
2:31:00
↑ 1726.4%
213 ft elev
Finish· 13.11 mi
13:32/mi
2:58:52
↑ 97↓ 1140.2%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

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Half Splits

1st Half· via 6.15MFaster
Distance6.15 mi
Time1:17:15
Pace12:34 /mi
2nd Half
Distance6.96 mi
Time1:41:37
Pace14:36 /mi
📊Positive Split: 31.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi07:06:1920:5011:3120:50
11:31
-
5.34M
5.34 mi07:51:011:05:3212:1644:42
12:40
+1:09
6.15M
6.15 mi08:02:441:17:1512:3411:43
14:28
+1:48
10.54M
10.54 mi09:06:292:21:0013:231:03:45
14:31
+0:03
11.05M
11.05 mi09:16:292:31:0013:4010:00
19:36
+5:05
Finish
13.11 mi09:44:212:58:5213:3927:52
13:32
-6:04

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

11:31 /mi

Average Pace

13:39 /mi

Slowest Pace

19:36 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:32

37% of race

Time at Steady Pace

1:43:20

58% of race

Time at Slower Pace

10:00

6% of race

Average Pace: 13:39 /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 mi07:06:1920:5011:3120:50
11:31
#6221
5.34M
5.34 mi07:51:011:05:3212:1644:42
12:40
#6409
6.15M
6.15 mi08:02:441:17:1512:3411:43
14:28
#6474
10.54M
10.54 mi09:06:292:21:0013:231:03:45
14:31
#6665
11.05M
11.05 mi09:16:292:31:0013:4010:00
19:36
#6658
Finish
13.11 mi09:44:212:58:5213:3927:52
13:32
#6580
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
1.81M1.81 mi1.81 mi6221258137462212581374
5.34M5.34 mi3.53 mi6409-1882684-103382-864912721383
6.15M6.15 mi0.81 mi6474-652715-31383-166992867403
10.54M10.54 mi4.39 mi6665-1912838-123397-1467662922400
11.05M11.05 mi0.51 mi6658+72834+439765122765384
Finish13.11 mi2.06 mi6580+782798+36396+160102559370

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 88%
~flat
+4ft-3ft

Overall

6221

Females

2581

F20-24

375

1.81M→5.34M

1.8 - 5.3 mi

Top 91%
×4story building
+80ft-74ft

Overall

6491

Females

2721

F20-24

384

5.34M→6.15M

5.3 - 6.2 mi

Top 94%
×10story building
+126ft-4ft

Overall

6699

Females

2867

F20-24

404

6.15M→10.54M

6.2 - 10.5 mi

Top 95%
×21story building
+230ft-361ft

Overall

6766

Females

2922

F20-24

401

10.54M→11.05M

10.5 - 11.1 mi

Top 92%
×14story building
+172ft-0ft

Overall

6512

Females

2765

F20-24

385

11.05M→Finish

11.1 - 13.1 mi

Top 85%
×7story building
+97ft-114ft

Overall

6010

Females

2559

F20-24

370

Passing Analysis

Category:
Athletes Passed
230*
Passed By
589
Net Change
-359
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#6221
1.81M → 5.34M91*279-188#6221#6409
5.34M → 6.15M974-65#6409#6474
6.15M → 10.54M31*222-191#6474#6665
10.54M → 11.05M147+7#6665#6658
11.05M → Finish85*7+78#6658#6580
TOTALS230*589-359

* 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