Jen-Feng Chang

Bib: 11255MAge: 31

Sunnyvale, CA

0:00
0:00
/ mi
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Overall
#0 / 4103
Gender (Male)
#0 / 2158
Division (M30-34)
#0 / 440
Race Day Weather
54°/44°F
overcast clouds

⏱️ Race Timeline

Course Elevation
10277 ft
×22story building
774 ft climb · 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2.2M
8:22/mi
18:24
→ flat
5.7M
12:06/mi
1:00:44
100780.1%
6.43M
16:49/mi
1:13:01
1473.8%
8.3M
9:57/mi
1:31:37
88530.3%
11.45M
13:12/mi
2:13:13
2933310.2%
FINISH· 13.11 mi
13:08/mi
2:35:01
61910.3%

The Course

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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2.2M
2.20 mi06:50:2018:248:2218:24
8:22
-
5.7M
5.70 mi07:32:401:00:4410:3942:20
12:06
+3:44
6.43M
6.43 mi07:44:571:13:0111:2112:17
16:49
+4:43
8.3M
8.30 mi08:03:331:31:3711:0218:36
9:57
-6:52
11.45M
11.45 mi08:45:092:13:1311:3841:36
13:12
+3:15
FINISH
13.11 mi09:06:572:35:0111:5021:48
13:08
-0:04

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

8:22 /mi

Average Pace

11:50 /mi

Slowest Pace

16:49 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

37:00

24% of race

Time at Steady Pace

1:45:44

68% of race

Time at Slower Pace

12:17

8% of race

Average Pace: 11:49 /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.

Loading...
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
2.2M
2.20 mi06:50:2018:248:2218:24
8:22
#1873
5.7M
5.70 mi07:32:401:00:4410:3942:20
12:06
#2776
6.43M
6.43 mi07:44:571:13:0111:2112:17
16:49
#2845
8.3M
8.30 mi08:03:331:31:3711:0218:36
9:57
#2928
11.45M
11.45 mi08:45:092:13:1311:3841:36
13:12
#3055
FINISH
13.11 mi09:06:572:35:0111:5021:48
13:08
#3007
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2.2M2.20 mi2.20 mi187311862571873(Top 46%)1186(Top 55%)257(Top 58%)
5.7M5.70 mi3.50 mi2776-9031647-461346-893074(Top 75%)1781(Top 83%)370(Top 84%)
6.43M6.43 mi0.73 mi2845-691678-31350-43173(Top 77%)1818(Top 84%)375(Top 85%)
8.3M8.30 mi1.87 mi2928-831720-42354-43247(Top 79%)1837(Top 85%)385(Top 88%)
11.45M11.45 mi3.15 mi3055-1271755-35368-143292(Top 80%)1837(Top 85%)378(Top 86%)
FINISH13.11 mi1.66 mi3007+481723+32358+102854(Top 70%)1621(Top 75%)339(Top 77%)

Segment Performance Analysis

Start → 2.2M

0.0 - 2.2 mi

Top 46%
~flat
+6ft-3ft

Overall

1873

Males

1186

M30-34

260

2.2M→5.7M

2.2 - 5.7 mi

Top 75%
×5story building
+100ft-78ft

Overall

3074

Males

1781

M30-34

374

5.7M→6.43M

5.7 - 6.4 mi

Top 77%
×12story building
+147ft-0ft

Overall

3173

Males

1818

M30-34

379

6.43M→8.3M

6.4 - 8.3 mi

Top 79%
×4story building
+88ft-53ft

Overall

3247

Males

1837

M30-34

390

8.3M→11.45M

8.3 - 11.4 mi

Top 80%
×20story building
+293ft-331ft

Overall

3292

Males

1837

M30-34

382

11.45M→FINISH

11.4 - 13.1 mi

Top 70%
×7story building
+61ft-91ft

Overall

2854

Males

1621

M30-34

339

Passing Analysis

Category:
Athletes Passed
149*
Passed By
1283
Net Change
-1134
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2.2M----#1873
2.2M5.7M10913-903#1873#2776
5.7M6.43M1584-69#2776#2845
6.43M8.3M17100-83#2845#2928
8.3M11.45M29*156-127#2928#3055
11.45MFINISH78*30+48#3055#3007
TOTALS149*1283-1134

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

📊

Passing Visuals

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