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BOSTON MARATHON 2025

Jiang Zhu

Bib: 17981•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
8:46/mi
27:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
54:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:22:09
↑ 67↓ 78
20K· 12.43 mi
9:02/mi
1:50:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:56:03
↑ 19↓ 370.5%
25K· 15.53 mi
9:19/mi
2:18:38
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:47:25
↑ 181↓ 1480.2%
20M
9:03/mi
2:59:43
↑ 64↓ 500.2%
21M
9:54/mi
3:09:37
↑ 106↓ 241.6%
35K· 21.75 mi
8:59/mi
3:16:20
↑ 17↓ 861.7%
23M
9:41/mi
3:28:27
↑ 23↓ 630.6%
24M
8:19/mi
3:36:46
↓ 821.3%
40K· 24.85 mi
8:49/mi
3:44:18
↓ 200.3%
25.2M
9:40/mi
3:47:38
↑ 13↓ 160.2%
Finish· 26.22 mi
8:13/mi
3:56:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:03
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time1:59:57
Pace9:09 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4327:158:4627:15
8:46
-
10K
6.21 mi11:46:0154:338:4727:18
8:47
+0:01
15K
9.32 mi12:13:371:22:098:4927:36
8:53
+0:06
20K
12.43 mi12:41:401:50:128:5228:03
9:02
+0:09
Half
13.11 mi12:47:311:56:038:515:51
8:34
-0:28
25K
15.53 mi13:10:062:18:388:5522:35
9:19
+0:45
30K
18.64 mi13:38:532:47:258:5928:47
9:16
-0:03
20M
20.00 mi13:51:112:59:438:5912:18
9:03
-0:13
21M
21.00 mi14:01:053:09:379:029:54
9:54
+0:51
35K
21.75 mi14:07:483:16:209:026:43
8:59
-0:55
23M
23.00 mi14:19:553:28:279:0412:07
9:41
+0:42
24M
24.00 mi14:28:143:36:469:028:19
8:19
-1:22
40K
24.85 mi14:35:463:44:189:017:32
8:49
+0:30
25.2M
25.20 mi14:39:063:47:389:023:20
9:40
+0:51
Finish
26.22 mi14:47:283:56:009:008:22
8:13
-1:27

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

8:13 /mi

Average Pace

9:00 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

22:32

10% of race

Time at Steady Pace

2:16:45

58% of race

Time at Slower Pace

1:16:43

33% of race

Average Pace: 9:00 /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 mi11:18:4327:158:4627:15
8:46
#21352
10K
6.21 mi11:46:0154:338:4727:18
8:47
#21334
15K
9.32 mi12:13:371:22:098:4927:36
8:53
#21339
20K
12.43 mi12:41:401:50:128:5228:03
9:02
#21254
Half
13.11 mi12:47:311:56:038:515:51
8:34
#21185
25K
15.53 mi13:10:062:18:388:5522:35
9:19
#21224
30K
18.64 mi13:38:532:47:258:5928:47
9:16
#20779
20M
20.00 mi13:51:112:59:438:5912:18
9:03
#20484
21M
21.00 mi14:01:053:09:379:029:54
9:54
#20332
35K
21.75 mi14:07:483:16:209:026:43
8:59
#20247
23M
23.00 mi14:19:553:28:279:0412:07
9:41
#20197
24M
24.00 mi14:28:143:36:469:028:19
8:19
#19958
40K
24.85 mi14:35:463:44:189:017:32
8:49
#19791
25.2M
25.20 mi14:39:063:47:389:023:20
9:40
#19734
Finish
26.22 mi14:47:283:56:009:008:22
8:13
#19549
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi21352130211302121472(Top 76%)13151(Top 82%)13151(Top 798%)
10K6.21 mi3.10 mi21334+1813037-1613037-1621337(Top 75%)13059(Top 81%)13059(Top 792%)
15K9.32 mi3.11 mi21339-513064-2713064-2721472(Top 76%)13151(Top 82%)13151(Top 798%)
20K12.43 mi3.11 mi21254+8513021+4313021+4321110(Top 74%)12932(Top 80%)12932(Top 785%)
Half13.11 mi0.68 mi21185+6912995+2612995+2619647(Top 69%)12321(Top 77%)12321(Top 748%)
25K15.53 mi2.42 mi21224-3912997-212997-221230(Top 75%)12954(Top 80%)12954(Top 786%)
30K18.64 mi3.11 mi20779+44512747+25012747+25018951(Top 67%)11810(Top 73%)11810(Top 717%)
20M20.00 mi1.36 mi20484+29512605+14212605+14217066(Top 60%)10854(Top 67%)10854(Top 659%)
21M21.00 mi1.00 mi20332+15212513+9212513+9217893(Top 63%)11114(Top 69%)11114(Top 674%)
35K21.75 mi0.75 mi20247+8512459+5412459+5418119(Top 64%)11109(Top 69%)11109(Top 674%)
23M23.00 mi1.25 mi20197+5012419+4012419+4019361(Top 68%)11603(Top 72%)11603(Top 704%)
24M24.00 mi1.00 mi19958+23912282+13712282+13713367(Top 47%)8844(Top 55%)8844(Top 537%)
40K24.85 mi0.85 mi19791+16712186+9612186+9615246(Top 54%)9557(Top 59%)9557(Top 580%)
25.2M25.20 mi0.35 mi19734+5712160+2612160+2615423(Top 54%)9618(Top 60%)9618(Top 584%)
Finish26.22 mi1.02 mi19549+18512055+10512055+10514333(Top 50%)9187(Top 57%)9187(Top 557%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21472

Males

13151

M55-59

13151

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21337

Males

13059

M55-59

13059

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21472

Males

13151

M55-59

13151

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

21110

Males

12932

M55-59

12932

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

19647

Males

12321

M55-59

12321

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21230

Males

12954

M55-59

12954

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18951

Males

11810

M55-59

11810

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17066

Males

10854

M55-59

10854

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17893

Males

11114

M55-59

11114

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18119

Males

11109

M55-59

11109

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

19361

Males

11603

M55-59

11603

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13367

Males

8844

M55-59

8844

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15246

Males

9557

M55-59

9557

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15423

Males

9618

M55-59

9618

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

14333

Males

9187

M55-59

9187

Passing Analysis

Category:
Athletes Passed
2744
Passed By
941
Net Change
+1803
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21352
5K → 10K291273+18#21352#21334
10K → 15K217222-5#21334#21339
15K → 20K228143+85#21339#21254
20K → Half767+69#21254#21185
Half → 25K131170-39#21185#21224
25K → 30K46520+445#21224#20779
30K → 20M2994+295#20779#20484
20M → 21M17321+152#20484#20332
21M → 35K9510+85#20332#20247
35K → 23M10858+50#20247#20197
23M → 24M2390+239#20197#19958
24M → 40K1714+167#19958#19791
40K → 25.2M625+57#19791#19734
25.2M → Finish1894+185#19734#19549
TOTALS2744941+1803
📊

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