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BOSTON MARATHON 2023

Ansui Xu

Bib: 20007•M

IN

Masters
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0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Age Group (M60-64)
#0 / 1110
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:22
Rank: #15213
Start → 5K
25:22 | 8:10/mi
10K· 6.21 mi
50:50
Rank: #15697 (-484)
5K → 10K
25:28 | 8:12/mi
15K· 9.32 mi
1:16:28
Rank: #15865 (-168)
10K → 15K
25:38 | 8:15/mi
20K· 12.43 mi
1:42:55
Rank: #16132 (-267)
15K → 20K
26:27 | 8:31/mi
Half· 13.11 mi
1:48:36
Rank: #16164 (-32)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:09:01
Rank: #16074 (+90)
Half → 25K
20:25 | 8:25/mi
30K· 18.64 mi
2:35:59
Rank: #15921 (+153)
25K → 30K
26:58 | 8:41/mi
20M
2:47:48
Rank: #15833 (+88)
30K → 20M
11:49 | 8:42/mi
21M
2:56:55
Rank: #15696 (+137)
20M → 21M
9:07 | 9:07/mi
35K· 21.75 mi
3:03:13
Rank: #15655 (+41)
21M → 35K
6:18 | 8:25/mi
23M
3:13:46
Rank: #15465 (+190)
35K → 23M
10:33 | 8:26/mi
24M
3:21:49
Rank: #15279 (+186)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:28:48
Rank: #15121 (+158)
24M → 40K
6:59 | 8:10/mi
25.2M
3:31:54
Rank: #15062 (+59)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:40:14
Rank: #15004 (+58)
25.2M → Finish
8:20 | 8:11/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:48:36
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:51:38
Pace8:31 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:1125:228:1025:22
8:10
-
10K
6.21 mi11:47:3950:508:1125:28
8:12
+0:02
15K
9.32 mi12:13:171:16:288:1225:38
8:15
+0:03
20K
12.43 mi12:39:441:42:558:1726:27
8:31
+0:16
Half
13.11 mi12:45:251:48:368:175:41
8:20
-0:11
25K
15.53 mi13:05:502:09:018:1820:25
8:25
+0:05
30K
18.64 mi13:32:482:35:598:2226:58
8:41
+0:16
20M
20.00 mi13:44:372:47:488:2311:49
8:42
+0:01
21M
21.00 mi13:53:442:56:558:259:07
9:07
+0:25
35K
21.75 mi14:00:023:03:138:256:18
8:25
-0:42
23M
23.00 mi14:10:353:13:468:2510:33
8:26
+0:01
24M
24.00 mi14:18:383:21:498:258:03
8:03
-0:23
40K
24.85 mi14:25:373:28:488:246:59
8:10
+0:07
25.2M
25.20 mi14:28:433:31:548:253:06
8:59
+0:49
Finish
26.22 mi14:37:033:40:148:248:20
8:11
-0:48

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:03 /mi

Average Pace

8:24 /mi

Slowest Pace

9:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:28:01

94% of race

Time at Steady Pace

12:13

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:24 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:22:1125:228:1025:22
8:10
#15213
10K
6.21 mi11:47:3950:508:1125:28
8:12
#15697
15K
9.32 mi12:13:171:16:288:1225:38
8:15
#15865
20K
12.43 mi12:39:441:42:558:1726:27
8:31
#16132
Half
13.11 mi12:45:251:48:368:175:41
8:20
#16164
25K
15.53 mi13:05:502:09:018:1820:25
8:25
#16074
30K
18.64 mi13:32:482:35:598:2226:58
8:41
#15921
20M
20.00 mi13:44:372:47:488:2311:49
8:42
#15833
21M
21.00 mi13:53:442:56:558:259:07
9:07
#15696
35K
21.75 mi14:00:023:03:138:256:18
8:25
#15655
23M
23.00 mi14:10:353:13:468:2510:33
8:26
#15465
24M
24.00 mi14:18:383:21:498:258:03
8:03
#15279
40K
24.85 mi14:25:373:28:488:246:59
8:10
#15121
25.2M
25.20 mi14:28:433:31:548:253:06
8:59
#15062
Finish
26.22 mi14:37:033:40:148:248:20
8:11
#15004
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15213104091040916243(Top 61%)10785(Top 71%)10785(Top 972%)
10K6.21 mi3.10 mi15697-48410584-17510584-17516249(Top 61%)10797(Top 71%)10797(Top 973%)
15K9.32 mi3.11 mi15865-16810648-6410648-6416243(Top 61%)10785(Top 71%)10785(Top 972%)
20K12.43 mi3.11 mi16132-26710726-7810726-7816965(Top 64%)11034(Top 73%)11034(Top 994%)
Half13.11 mi0.68 mi16164-3210731-510731-516763(Top 63%)10970(Top 72%)10970(Top 988%)
25K15.53 mi2.42 mi16074+9010672+5910672+5915732(Top 59%)10432(Top 69%)10432(Top 940%)
30K18.64 mi3.11 mi15921+15310575+9710575+9715417(Top 58%)10216(Top 67%)10216(Top 920%)
20M20.00 mi1.36 mi15833+8810512+6310512+6314867(Top 56%)9924(Top 65%)9924(Top 894%)
21M21.00 mi1.00 mi15696+13710431+8110431+8114095(Top 53%)9537(Top 63%)9537(Top 859%)
35K21.75 mi0.75 mi15655+4110406+2510406+2514920(Top 56%)9827(Top 65%)9827(Top 885%)
23M23.00 mi1.25 mi15465+19010303+10310303+10312794(Top 48%)8805(Top 58%)8805(Top 793%)
24M24.00 mi1.00 mi15279+18610229+7410229+7411641(Top 44%)8209(Top 54%)8209(Top 740%)
40K24.85 mi0.85 mi15121+15810153+7610153+7611213(Top 42%)7919(Top 52%)7919(Top 713%)
25.2M25.20 mi0.35 mi15062+5910121+3210121+3212611(Top 47%)8530(Top 56%)8530(Top 768%)
Finish26.22 mi1.02 mi15004+5810074+4710074+4713342(Top 50%)8929(Top 59%)8929(Top 804%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16243

Males

10785

M60-64

10785

5K→10K

3.1 - 6.2 mi

Top 61%
×5stories
+79ft-138ft

Overall

16249

Males

10797

M60-64

10797

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16243

Males

10785

M60-64

10785

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

16965

Males

11034

M60-64

11034

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16763

Males

10970

M60-64

10970

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

15732

Males

10432

M60-64

10432

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

15417

Males

10216

M60-64

10216

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

14867

Males

9924

M60-64

9924

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

14095

Males

9537

M60-64

9537

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

14920

Males

9827

M60-64

9827

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12794

Males

8805

M60-64

8805

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11641

Males

8209

M60-64

8209

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11213

Males

7919

M60-64

7919

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12611

Males

8530

M60-64

8530

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

13342

Males

8929

M60-64

8929

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1880
Passed By
1671
Net Change
+209
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15213
5K → 10K130614-484#15213#15697
10K → 15K126294-168#15697#15865
15K → 20K89356-267#15865#16132
20K → Half3365-32#16132#16164
Half → 25K18090+90#16164#16074
25K → 30K24289+153#16074#15921
30K → 20M13749+88#15921#15833
20M → 21M16730+137#15833#15696
21M → 35K6524+41#15696#15655
35K → 23M20010+190#15655#15465
23M → 24M1948+186#15465#15279
24M → 40K1613+158#15279#15121
40K → 25.2M7011+59#15121#15062
25.2M → Finish8628+58#15062#15004
TOTALS18801671+209
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing