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BOSTON MARATHON 2023

Yufei Xu

Bib: 27503•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:22
Rank: #21946
Start → 5K
29:22 | 9:27/mi
10K· 6.21 mi
57:10
Rank: #21392 (+554)
5K → 10K
27:48 | 8:57/mi
15K· 9.32 mi
1:24:24
Rank: #20822 (+570)
10K → 15K
27:14 | 8:46/mi
20K· 12.43 mi
1:52:03
Rank: #20436 (+386)
15K → 20K
27:39 | 8:54/mi
Half· 13.11 mi
1:58:03
Rank: #20388 (+48)
20K → Half
6:00 | 8:48/mi
25K· 15.53 mi
2:20:08
Rank: #20212 (+176)
Half → 25K
22:05 | 9:06/mi
30K· 18.64 mi
2:49:13
Rank: #19953 (+259)
25K → 30K
29:05 | 9:22/mi
20M
3:01:58
Rank: #19806 (+147)
30K → 20M
12:45 | 9:23/mi
21M
3:11:48
Rank: #19645 (+161)
20M → 21M
9:50 | 9:50/mi
35K· 21.75 mi
3:18:55
Rank: #19658 (-13)
21M → 35K
7:07 | 9:31/mi
23M
3:30:47
Rank: #19576 (+82)
35K → 23M
11:52 | 9:29/mi
24M
3:40:02
Rank: #19537 (+39)
23M → 24M
9:15 | 9:15/mi
40K· 24.85 mi
3:48:01
Rank: #19476 (+61)
24M → 40K
7:59 | 9:20/mi
25.2M
3:51:25
Rank: #19448 (+28)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:59:43
Rank: #19262 (+186)
25.2M → Finish
8:18 | 8:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:03
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:01:40
Pace9:17 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5829:229:2729:22
9:27
-
10K
6.21 mi12:13:4657:109:1227:48
8:57
-0:30
15K
9.32 mi12:41:001:24:249:0327:14
8:46
-0:11
20K
12.43 mi13:08:391:52:039:0127:39
8:54
+0:08
Half
13.11 mi13:14:391:58:039:006:00
8:48
-0:06
25K
15.53 mi13:36:442:20:089:0122:05
9:06
+0:18
30K
18.64 mi14:05:492:49:139:0529:05
9:22
+0:16
20M
20.00 mi14:18:343:01:589:0612:45
9:23
+0:01
21M
21.00 mi14:28:243:11:489:089:50
9:50
+0:27
35K
21.75 mi14:35:313:18:559:097:07
9:31
-0:19
23M
23.00 mi14:47:233:30:479:1011:52
9:29
-0:02
24M
24.00 mi14:56:383:40:029:109:15
9:15
-0:14
40K
24.85 mi15:04:373:48:019:107:59
9:20
+0:05
25.2M
25.20 mi15:08:013:51:259:113:24
9:52
+0:32
Finish
26.22 mi15:16:193:59:439:098:18
8:09
-1:43

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

8:09 /mi

Average Pace

9:09 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:04

50% of race

Time at Steady Pace

1:47:25

45% of race

Time at Slower Pace

13:14

6% of race

Average Pace: 9:09 /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 mi11:45:5829:229:2729:22
9:27
#21946
10K
6.21 mi12:13:4657:109:1227:48
8:57
#21392
15K
9.32 mi12:41:001:24:249:0327:14
8:46
#20822
20K
12.43 mi13:08:391:52:039:0127:39
8:54
#20436
Half
13.11 mi13:14:391:58:039:006:00
8:48
#20388
25K
15.53 mi13:36:442:20:089:0122:05
9:06
#20212
30K
18.64 mi14:05:492:49:139:0529:05
9:22
#19953
20M
20.00 mi14:18:343:01:589:0612:45
9:23
#19806
21M
21.00 mi14:28:243:11:489:089:50
9:50
#19645
35K
21.75 mi14:35:313:18:559:097:07
9:31
#19658
23M
23.00 mi14:47:233:30:479:1011:52
9:29
#19576
24M
24.00 mi14:56:383:40:029:109:15
9:15
#19537
40K
24.85 mi15:04:373:48:019:107:59
9:20
#19476
25.2M
25.20 mi15:08:013:51:259:113:24
9:52
#19448
Finish
26.22 mi15:16:193:59:439:098:18
8:09
#19262
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi21946130671306719325(Top 73%)12021(Top 79%)12021(Top 536%)
10K6.21 mi3.10 mi21392+55412845+22212845+22220667(Top 78%)12570(Top 83%)12570(Top 561%)
15K9.32 mi3.11 mi20822+57012612+23312612+23319325(Top 73%)12021(Top 79%)12021(Top 536%)
20K12.43 mi3.11 mi20436+38612448+16412448+16419199(Top 72%)11970(Top 79%)11970(Top 534%)
Half13.11 mi0.68 mi20388+4812431+1712431+1719427(Top 73%)12068(Top 80%)12068(Top 539%)
25K15.53 mi2.42 mi20212+17612366+6512366+6519441(Top 73%)12027(Top 79%)12027(Top 537%)
30K18.64 mi3.11 mi19953+25912226+14012226+14018867(Top 71%)11724(Top 77%)11724(Top 523%)
20M20.00 mi1.36 mi19806+14712160+6612160+6618381(Top 69%)11408(Top 75%)11408(Top 509%)
21M21.00 mi1.00 mi19645+16112088+7212088+7217373(Top 65%)10944(Top 72%)10944(Top 488%)
35K21.75 mi0.75 mi19658-1312087+112087+119877(Top 75%)11998(Top 79%)11998(Top 535%)
23M23.00 mi1.25 mi19576+8212045+4212045+4218251(Top 69%)11235(Top 74%)11235(Top 501%)
24M24.00 mi1.00 mi19537+3912014+3112014+3118250(Top 69%)11201(Top 74%)11201(Top 500%)
40K24.85 mi0.85 mi19476+6111979+3511979+3517681(Top 66%)10885(Top 72%)10885(Top 486%)
25.2M25.20 mi0.35 mi19448+2811965+1411965+1416787(Top 63%)10473(Top 69%)10473(Top 467%)
Finish26.22 mi1.02 mi19262+18611880+8511880+8513070(Top 49%)8815(Top 58%)8815(Top 393%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

19325

Males

12021

M40-44

12021

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20667

Males

12570

M40-44

12570

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

19325

Males

12021

M40-44

12021

15K→20K

9.3 - 12.4 mi

Top 72%
×5stories
+106ft-86ft

Overall

19199

Males

11970

M40-44

11970

20K→Half

12.4 - 13.1 mi

Top 73%
×2stories
+19ft-37ft

Overall

19427

Males

12068

M40-44

12068

Half→25K

13.1 - 15.5 mi

Top 73%
×4stories
+66ft-88ft

Overall

19441

Males

12027

M40-44

12027

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

18867

Males

11724

M40-44

11724

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

18381

Males

11408

M40-44

11408

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

17373

Males

10944

M40-44

10944

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

19877

Males

11998

M40-44

11998

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18251

Males

11235

M40-44

11235

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

18250

Males

11201

M40-44

11201

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17681

Males

10885

M40-44

10885

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16787

Males

10473

M40-44

10473

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13070

Males

8815

M40-44

8815

Passing Analysis

Category:
Athletes Passed
3075
Passed By
391
Net Change
+2684
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21946
5K → 10K62773+554#21946#21392
10K → 15K59020+570#21392#20822
15K → 20K41327+386#20822#20436
20K → Half524+48#20436#20388
Half → 25K22953+176#20388#20212
25K → 30K29536+259#20212#19953
30K → 20M16518+147#19953#19806
20M → 21M17716+161#19806#19645
21M → 35K4053-13#19645#19658
35K → 23M11735+82#19658#19576
23M → 24M6425+39#19576#19537
24M → 40K8221+61#19537#19476
40K → 25.2M346+28#19476#19448
25.2M → Finish1904+186#19448#19262
TOTALS3075391+2684
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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