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BOSTON MARATHON 2023

Xiaocheng Jing

Bib: 20662•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 39%
Masters (Masters Women)
#0 / 6539
Top 26%
Division (F40-44)
#0 / 1878
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:27/mi
26:14
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
51:46
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:17:20
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:42:53
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:48:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:15/mi
2:08:25
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:34:24
↑ 181↓ 1480.2%
20M
8:29/mi
2:45:56
↑ 64↓ 500.2%
21M
8:47/mi
2:54:43
↑ 106↓ 241.6%
35K· 21.75 mi
8:12/mi
3:00:51
↑ 17↓ 861.7%
23M
8:26/mi
3:11:24
↑ 23↓ 630.6%
24M
7:55/mi
3:19:19
↓ 821.3%
40K· 24.85 mi
8:00/mi
3:26:09
↓ 200.3%
25.2M
8:45/mi
3:29:10
↑ 13↓ 160.2%
Finish· 26.22 mi
7:52/mi
3:37:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:48:25
Pace8:16 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:48:46
Pace8:18 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0126:148:2726:14
8:27
-
10K
6.21 mi11:45:3351:468:2025:32
8:13
-0:14
15K
9.32 mi12:11:071:17:208:1825:34
8:14
+0:01
20K
12.43 mi12:36:401:42:538:1725:33
8:13
-0:01
Half
13.11 mi12:42:121:48:258:165:32
8:07
-0:06
25K
15.53 mi13:02:122:08:258:1620:00
8:15
+0:08
30K
18.64 mi13:28:112:34:248:1725:59
8:22
+0:07
20M
20.00 mi13:39:432:45:568:1811:32
8:29
+0:07
21M
21.00 mi13:48:302:54:438:198:47
8:47
+0:18
35K
21.75 mi13:54:383:00:518:196:08
8:12
-0:35
23M
23.00 mi14:05:113:11:248:1910:33
8:26
+0:14
24M
24.00 mi14:13:063:19:198:187:55
7:55
-0:31
40K
24.85 mi14:19:563:26:098:186:50
8:00
+0:05
25.2M
25.20 mi14:22:573:29:108:183:01
8:45
+0:45
Finish
26.22 mi14:30:583:37:118:178:01
7:52
-0:53

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

7:52 /mi

Average Pace

8:17 /mi

Slowest Pace

8:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:23

95% of race

Time at Steady Pace

11:48

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /mi

Loading chart...
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...
0mi6.6mi13.1mi19.7mi26.2mi
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
5K
3.11 mi11:20:0126:148:2726:14
8:27
#17170
10K
6.21 mi11:45:3351:468:2025:32
8:13
#16724
15K
9.32 mi12:11:071:17:208:1825:34
8:14
#16488
20K
12.43 mi12:36:401:42:538:1725:33
8:13
#16115
Half
13.11 mi12:42:121:48:258:165:32
8:07
#16056
25K
15.53 mi13:02:122:08:258:1620:00
8:15
#15796
30K
18.64 mi13:28:112:34:248:1725:59
8:22
#15356
20M
20.00 mi13:39:432:45:568:1811:32
8:29
#15214
21M
21.00 mi13:48:302:54:438:198:47
8:47
#15019
35K
21.75 mi13:54:383:00:518:196:08
8:12
#14956
23M
23.00 mi14:05:113:11:248:1910:33
8:26
#14814
24M
24.00 mi14:13:063:19:198:187:55
7:55
#14615
40K
24.85 mi14:19:563:26:098:186:50
8:00
#14441
25.2M
25.20 mi14:22:573:29:108:183:01
8:45
#14376
Finish
26.22 mi14:30:583:37:118:178:01
7:52
#14240
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi171706040604016069(Top 60%)5328(Top 47%)5328(Top 284%)
10K6.21 mi3.10 mi16724+4465725+3155725+31516395(Top 62%)5507(Top 48%)5507(Top 293%)
15K9.32 mi3.11 mi16488+2365583+1425583+14216069(Top 60%)5328(Top 47%)5328(Top 284%)
20K12.43 mi3.11 mi16115+3735375+2085375+20815122(Top 57%)4785(Top 42%)4785(Top 255%)
Half13.11 mi0.68 mi16056+595343+325343+3215231(Top 57%)4816(Top 42%)4816(Top 256%)
25K15.53 mi2.42 mi15796+2605208+1355208+13514587(Top 55%)4575(Top 40%)4575(Top 244%)
30K18.64 mi3.11 mi15356+4404981+2274981+22713444(Top 50%)4001(Top 35%)4001(Top 213%)
20M20.00 mi1.36 mi15214+1424918+634918+6313572(Top 51%)4161(Top 36%)4161(Top 222%)
21M21.00 mi1.00 mi15019+1954808+1104808+11012197(Top 46%)3518(Top 31%)3518(Top 187%)
35K21.75 mi0.75 mi14956+634786+224786+2213471(Top 51%)4270(Top 37%)4270(Top 227%)
23M23.00 mi1.25 mi14814+1424729+574729+5712781(Top 48%)3960(Top 35%)3960(Top 211%)
24M24.00 mi1.00 mi14615+1994626+1034626+10310715(Top 40%)2959(Top 26%)2959(Top 158%)
40K24.85 mi0.85 mi14441+1744540+864540+8610062(Top 38%)2699(Top 24%)2699(Top 144%)
25.2M25.20 mi0.35 mi14376+654509+314509+3111132(Top 42%)3290(Top 29%)3290(Top 175%)
Finish26.22 mi1.02 mi14240+1364452+574452+5711201(Top 42%)3307(Top 29%)3307(Top 176%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16069

Females

5328

F40-44

5328

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16395

Females

5507

F40-44

5507

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16069

Females

5328

F40-44

5328

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15122

Females

4785

F40-44

4785

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

15231

Females

4816

F40-44

4816

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

14587

Females

4575

F40-44

4575

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13444

Females

4001

F40-44

4001

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13572

Females

4161

F40-44

4161

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12197

Females

3518

F40-44

3518

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

13471

Females

4270

F40-44

4270

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12781

Females

3960

F40-44

3960

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

10715

Females

2959

F40-44

2959

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10062

Females

2699

F40-44

2699

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11132

Females

3290

F40-44

3290

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11201

Females

3307

F40-44

3307

Passing Analysis

Category:
Athletes Passed
3366
Passed By
436
Net Change
+2930
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17170
5K → 10K594148+446#17170#16724
10K → 15K344108+236#16724#16488
15K → 20K40128+373#16488#16115
20K → Half689+59#16115#16056
Half → 25K28525+260#16056#15796
25K → 30K46121+440#15796#15356
30K → 20M16523+142#15356#15214
20M → 21M20510+195#15214#15019
21M → 35K8017+63#15019#14956
35K → 23M16725+142#14956#14814
23M → 24M2023+199#14814#14615
24M → 40K1806+174#14615#14441
40K → 25.2M683+65#14441#14376
25.2M → Finish14610+136#14376#14240
TOTALS3366436+2930
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing