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BOSTON MARATHON 2025

Siguang Xu

Bib: 20638•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:57
Rank: #16815
Start → 5K
8:02/mi
24:57 split
10K· 6.21 mi
49:34
Rank: #16315 (+500)
5K → 10K
7:55/mi
24:37 split
15K· 9.32 mi
1:13:50
Rank: #15680 (+635)
10K → 15K
7:49/mi
24:16 split
20K· 12.43 mi
1:38:31
Rank: #15342 (+338)
15K → 20K
7:57/mi
24:41 split
Half· 13.11 mi
1:43:50
Rank: #15279 (+63)
20K → Half
7:48/mi
5:19 split
25K· 15.53 mi
2:03:15
Rank: #15027 (+252)
Half → 25K
8:00/mi
19:25 split
30K· 18.64 mi
2:29:09
Rank: #14738 (+289)
25K → 30K
8:20/mi
25:54 split
20M
2:40:22
Rank: #14465 (+273)
30K → 20M
8:15/mi
11:13 split
21M
2:48:56
Rank: #14221 (+244)
20M → 21M
8:34/mi
8:34 split
35K· 21.75 mi
2:54:52
Rank: #14097 (+124)
21M → 35K
7:56/mi
5:56 split
23M
3:05:04
Rank: #13886 (+211)
35K → 23M
8:09/mi
10:12 split
24M
3:13:09
Rank: #13780 (+106)
23M → 24M
8:05/mi
8:05 split
40K· 24.85 mi
3:19:56
Rank: #13599 (+181)
24M → 40K
7:56/mi
6:47 split
25.2M
3:22:56
Rank: #13512 (+87)
40K → 25.2M
8:42/mi
3:00 split
Finish· 26.22 mi
3:30:48
Rank: #13418 (+94)
25.2M → Finish
7:43/mi
7:52 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:50
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:46:58
Pace8:10 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:2224:578:0224:57
8:02
-
10K
6.21 mi11:50:5949:347:5924:37
7:55
-0:07
15K
9.32 mi12:15:151:13:507:5524:16
7:49
-0:06
20K
12.43 mi12:39:561:38:317:5624:41
7:57
+0:08
Half
13.11 mi12:45:151:43:507:555:19
7:48
-0:09
25K
15.53 mi13:04:402:03:157:5619:25
8:00
+0:12
30K
18.64 mi13:30:342:29:098:0025:54
8:20
+0:20
20M
20.00 mi13:41:472:40:228:0111:13
8:15
-0:05
21M
21.00 mi13:50:212:48:568:038:34
8:34
+0:19
35K
21.75 mi13:56:172:54:528:025:56
7:56
-0:38
23M
23.00 mi14:06:293:05:048:0310:12
8:09
+0:13
24M
24.00 mi14:14:343:13:098:038:05
8:05
-0:04
40K
24.85 mi14:21:213:19:568:036:47
7:56
-0:09
25.2M
25.20 mi14:24:213:22:568:033:00
8:42
+0:46
Finish
26.22 mi14:32:133:30:488:037:52
7:43
-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

7:43 /mi

Average Pace

8:03 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:14

95% of race

Time at Steady Pace

11:34

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:02 /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 mi11:26:2224:578:0224:57
8:02
#16815
10K
6.21 mi11:50:5949:347:5924:37
7:55
#16315
15K
9.32 mi12:15:151:13:507:5524:16
7:49
#15680
20K
12.43 mi12:39:561:38:317:5624:41
7:57
#15342
Half
13.11 mi12:45:151:43:507:555:19
7:48
#15279
25K
15.53 mi13:04:402:03:157:5619:25
8:00
#15027
30K
18.64 mi13:30:342:29:098:0025:54
8:20
#14738
20M
20.00 mi13:41:472:40:228:0111:13
8:15
#14465
21M
21.00 mi13:50:212:48:568:038:34
8:34
#14221
35K
21.75 mi13:56:172:54:528:025:56
7:56
#14097
23M
23.00 mi14:06:293:05:048:0310:12
8:09
#13886
24M
24.00 mi14:14:343:13:098:038:05
8:05
#13780
40K
24.85 mi14:21:213:19:568:036:47
7:56
#13599
25.2M
25.20 mi14:24:213:22:568:033:00
8:42
#13512
Finish
26.22 mi14:32:133:30:488:037:52
7:43
#13418
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16815111221112214444(Top 51%)10119(Top 63%)10119(Top 804%)
10K6.21 mi3.10 mi16315+50010937+18510937+18515828(Top 56%)10752(Top 67%)10752(Top 854%)
15K9.32 mi3.11 mi15680+63510693+24410693+24414444(Top 51%)10119(Top 63%)10119(Top 804%)
20K12.43 mi3.11 mi15342+33810521+17210521+17214477(Top 51%)10078(Top 63%)10078(Top 800%)
Half13.11 mi0.68 mi15279+6310493+2810493+2814150(Top 50%)9962(Top 62%)9962(Top 791%)
25K15.53 mi2.42 mi15027+25210354+13910354+13913943(Top 49%)9725(Top 60%)9725(Top 772%)
30K18.64 mi3.11 mi14738+28910169+18510169+18513718(Top 48%)9472(Top 59%)9472(Top 752%)
20M20.00 mi1.36 mi14465+27310024+14510024+14512165(Top 43%)8607(Top 53%)8607(Top 684%)
21M21.00 mi1.00 mi14221+2449900+1249900+12410892(Top 38%)7831(Top 49%)7831(Top 622%)
35K21.75 mi0.75 mi14097+1249815+859815+8511773(Top 41%)8220(Top 51%)8220(Top 653%)
23M23.00 mi1.25 mi13886+2119688+1279688+12711026(Top 39%)7771(Top 48%)7771(Top 617%)
24M24.00 mi1.00 mi13780+1069603+859603+8511787(Top 41%)8060(Top 50%)8060(Top 640%)
40K24.85 mi0.85 mi13599+1819498+1059498+1059698(Top 34%)6908(Top 43%)6908(Top 549%)
25.2M25.20 mi0.35 mi13512+879456+429456+429990(Top 35%)6966(Top 43%)6966(Top 553%)
Finish26.22 mi1.02 mi13418+949388+689388+6810848(Top 38%)7440(Top 46%)7440(Top 591%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

14444

Males

10119

M60-64

10119

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15828

Males

10752

M60-64

10752

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

14444

Males

10119

M60-64

10119

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14477

Males

10078

M60-64

10078

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14150

Males

9962

M60-64

9962

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

13943

Males

9725

M60-64

9725

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

13718

Males

9472

M60-64

9472

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12165

Males

8607

M60-64

8607

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10892

Males

7831

M60-64

7831

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11773

Males

8220

M60-64

8220

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11026

Males

7771

M60-64

7771

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11787

Males

8060

M60-64

8060

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9698

Males

6908

M60-64

6908

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9990

Males

6966

M60-64

6966

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10848

Males

7440

M60-64

7440

Passing Analysis

Category:
Athletes Passed
3903
Passed By
506
Net Change
+3397
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16815
5K → 10K607107+500#16815#16315
10K → 15K66328+635#16315#15680
15K → 20K39355+338#15680#15342
20K → Half7512+63#15342#15279
Half → 25K30755+252#15279#15027
25K → 30K390101+289#15027#14738
30K → 20M29320+273#14738#14465
20M → 21M25410+244#14465#14221
21M → 35K13612+124#14221#14097
35K → 23M24029+211#14097#13886
23M → 24M13832+106#13886#13780
24M → 40K1898+181#13780#13599
40K → 25.2M925+87#13599#13512
25.2M → Finish12632+94#13512#13418
TOTALS3903506+3397
📊

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