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BOSTON MARATHON 2025

Shangcai Xie

Bib: 14330•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 37%
Gender (Male)
#0 / 16105
Top 50%
Masters (Masters Men)
#0 / 10463
Top 39%
Division (M50-54)
#0 / 1996
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:40
Rank: #7612
Start → 5K
6:58/mi
21:40 split
10K· 6.21 mi
43:50
Rank: #8299 (-687)
5K → 10K
7:08/mi
22:10 split
15K· 9.32 mi
1:06:12
Rank: #8495 (-196)
10K → 15K
7:12/mi
22:22 split
20K· 12.43 mi
1:29:23
Rank: #8913 (-418)
15K → 20K
7:28/mi
23:11 split
Half· 13.11 mi
1:34:26
Rank: #9017 (-104)
20K → Half
7:24/mi
5:03 split
25K· 15.53 mi
1:53:30
Rank: #9623 (-606)
Half → 25K
7:52/mi
19:04 split
30K· 18.64 mi
2:18:36
Rank: #10010 (-387)
25K → 30K
8:05/mi
25:06 split
20M
2:29:24
Rank: #9958 (+52)
30K → 20M
7:57/mi
10:48 split
21M
2:38:05
Rank: #10069 (-111)
20M → 21M
8:41/mi
8:41 split
35K· 21.75 mi
2:43:54
Rank: #10051 (+18)
21M → 35K
7:46/mi
5:49 split
23M
2:53:30
Rank: #9886 (+165)
35K → 23M
7:40/mi
9:36 split
24M
3:01:42
Rank: #9990 (-104)
23M → 24M
8:12/mi
8:12 split
40K· 24.85 mi
3:09:09
Rank: #10160 (-170)
24M → 40K
8:43/mi
7:27 split
25.2M
3:12:31
Rank: #10264 (-104)
40K → 25.2M
9:46/mi
3:22 split
Finish· 26.22 mi
3:21:28
Rank: #10581 (-317)
25.2M → Finish
8:47/mi
8:57 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:26
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:47:02
Pace8:10 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5421:406:5821:40
6:58
-
10K
6.21 mi11:13:0443:507:0322:10
7:08
+0:10
15K
9.32 mi11:35:261:06:127:0622:22
7:12
+0:04
20K
12.43 mi11:58:371:29:237:1223:11
7:28
+0:16
Half
13.11 mi12:03:401:34:267:125:03
7:24
-0:04
25K
15.53 mi12:22:441:53:307:1819:04
7:52
+0:28
30K
18.64 mi12:47:502:18:367:2625:06
8:05
+0:13
20M
20.00 mi12:58:382:29:247:2810:48
7:57
-0:08
21M
21.00 mi13:07:192:38:057:328:41
8:41
+0:44
35K
21.75 mi13:13:082:43:547:325:49
7:46
-0:55
23M
23.00 mi13:22:442:53:307:339:36
7:40
-0:06
24M
24.00 mi13:30:563:01:427:348:12
8:12
+0:32
40K
24.85 mi13:38:233:09:097:377:27
8:43
+0:31
25.2M
25.20 mi13:41:453:12:317:383:22
9:46
+1:03
Finish
26.22 mi13:50:423:21:287:418:57
8:47
-0:59

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

6:58 /mi

Average Pace

7:41 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:26

47% of race

Time at Steady Pace

1:18:35

39% of race

Time at Slower Pace

28:27

14% of race

Average Pace: 7:41 /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 mi10:50:5421:406:5821:40
6:58
#7612
10K
6.21 mi11:13:0443:507:0322:10
7:08
#8299
15K
9.32 mi11:35:261:06:127:0622:22
7:12
#8495
20K
12.43 mi11:58:371:29:237:1223:11
7:28
#8913
Half
13.11 mi12:03:401:34:267:125:03
7:24
#9017
25K
15.53 mi12:22:441:53:307:1819:04
7:52
#9623
30K
18.64 mi12:47:502:18:367:2625:06
8:05
#10010
20M
20.00 mi12:58:382:29:247:2810:48
7:57
#9958
21M
21.00 mi13:07:192:38:057:328:41
8:41
#10069
35K
21.75 mi13:13:082:43:547:325:49
7:46
#10051
23M
23.00 mi13:22:442:53:307:339:36
7:40
#9886
24M
24.00 mi13:30:563:01:427:348:12
8:12
#9990
40K
24.85 mi13:38:233:09:097:377:27
8:43
#10160
25.2M
25.20 mi13:41:453:12:317:383:22
9:46
#10264
Finish
26.22 mi13:50:423:21:287:418:57
8:47
#10581
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi7612674867489110(Top 32%)7615(Top 47%)7615(Top 382%)
10K6.21 mi3.10 mi8299-6877177-4297177-4298952(Top 32%)7578(Top 47%)7578(Top 380%)
15K9.32 mi3.11 mi8495-1967284-1077284-1079110(Top 32%)7615(Top 47%)7615(Top 382%)
20K12.43 mi3.11 mi8913-4187512-2287512-22810421(Top 37%)8224(Top 51%)8224(Top 412%)
Half13.11 mi0.68 mi9017-1047573-617573-6110833(Top 38%)8458(Top 53%)8458(Top 424%)
25K15.53 mi2.42 mi9623-6067862-2897862-28912842(Top 45%)9215(Top 57%)9215(Top 462%)
30K18.64 mi3.11 mi10010-3878026-1648026-16411934(Top 42%)8640(Top 54%)8640(Top 433%)
20M20.00 mi1.36 mi9958+527964+627964+6210077(Top 35%)7587(Top 47%)7587(Top 380%)
21M21.00 mi1.00 mi10069-1117973-97973-911548(Top 41%)8141(Top 51%)8141(Top 408%)
35K21.75 mi0.75 mi10051+187934+397934+3910594(Top 37%)7663(Top 48%)7663(Top 384%)
23M23.00 mi1.25 mi9886+1657804+1307804+1307698(Top 27%)6000(Top 37%)6000(Top 301%)
24M24.00 mi1.00 mi9990-1047824-207824-2012532(Top 44%)8427(Top 52%)8427(Top 422%)
40K24.85 mi0.85 mi10160-1707876-527876-5214661(Top 52%)9279(Top 58%)9279(Top 465%)
25.2M25.20 mi0.35 mi10264-1047917-417917-4115836(Top 56%)9773(Top 61%)9773(Top 490%)
Finish26.22 mi1.02 mi10581-3178043-1268043-12617915(Top 63%)10826(Top 67%)10826(Top 542%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

9110

Males

7615

M50-54

7615

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8952

Males

7578

M50-54

7578

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

9110

Males

7615

M50-54

7615

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10421

Males

8224

M50-54

8224

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10833

Males

8458

M50-54

8458

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12842

Males

9215

M50-54

9215

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11934

Males

8640

M50-54

8640

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

10077

Males

7587

M50-54

7587

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

11548

Males

8141

M50-54

8141

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10594

Males

7663

M50-54

7663

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7698

Males

6000

M50-54

6000

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12532

Males

8427

M50-54

8427

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14661

Males

9279

M50-54

9279

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15836

Males

9773

M50-54

9773

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

17915

Males

10826

M50-54

10826

Passing Analysis

Category:
Athletes Passed
998*
Passed By
3960
Net Change
-2969
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7612
5K → 10K41728-687#7612#8299
10K → 15K96292-196#8299#8495
15K → 20K75493-418#8495#8913
20K → Half14118-104#8913#9017
Half → 25K53659-606#9017#9623
25K → 30K122508-387#9623#10010
30K → 20M13987+52#10010#9958
20M → 21M72181-111#9958#10069
21M → 35K7253+18#10069#10051
35K → 23M194*29+165#10051#9886
23M → 24M52155-104#9886#9990
24M → 40K44212-170#9990#10160
40K → 25.2M12116-104#10160#10264
25.2M → Finish12329-317#10264#10581
TOTALS998*3960-2969

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing