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BOSTON MARATHON 2025

Andrew Shen

Bib: 939•M

AZ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:19
Rank: #784
Start → 5K
18:19 | 5:54/mi
10K· 6.21 mi
36:38
Rank: #794 (-10)
5K → 10K
18:19 | 5:54/mi
15K· 9.32 mi
54:56
Rank: #775 (+19)
10K → 15K
18:18 | 5:53/mi
20K· 12.43 mi
1:13:29
Rank: #771 (+4)
15K → 20K
18:33 | 5:58/mi
Half· 13.11 mi
1:17:33
Rank: #780 (-9)
20K → Half
4:04 | 5:58/mi
25K· 15.53 mi
1:32:20
Rank: #808 (-28)
Half → 25K
14:47 | 6:06/mi
30K· 18.64 mi
1:52:06
Rank: #860 (-52)
25K → 30K
19:46 | 6:22/mi
20M
2:01:00
Rank: #888 (-28)
30K → 20M
8:54 | 6:33/mi
21M
2:08:00
Rank: #927 (-39)
20M → 21M
7:00 | 7:00/mi
35K· 21.75 mi
2:12:53
Rank: #953 (-26)
21M → 35K
4:53 | 6:32/mi
23M
2:21:21
Rank: #993 (-40)
35K → 23M
8:28 | 6:46/mi
24M
2:28:00
Rank: #1044 (-51)
23M → 24M
6:39 | 6:39/mi
40K· 24.85 mi
2:33:56
Rank: #1094 (-50)
24M → 40K
5:56 | 6:56/mi
25.2M
2:36:34
Rank: #1117 (-23)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
2:43:20
Rank: #1164 (-47)
25.2M → Finish
6:46 | 6:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:33
Pace5:55 /mi
2nd Half
Distance13.11 mi
Time1:25:47
Pace6:33 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3718:195:5418:19
5:54
-
10K
6.21 mi10:36:5636:385:5418:19
5:54
0:00
15K
9.32 mi10:55:1454:565:5418:18
5:53
-0:01
20K
12.43 mi11:13:471:13:295:5518:33
5:58
+0:05
Half
13.11 mi11:17:511:17:335:554:04
5:58
0:00
25K
15.53 mi11:32:381:32:205:5714:47
6:06
+0:08
30K
18.64 mi11:52:241:52:066:0119:46
6:22
+0:16
20M
20.00 mi12:01:182:01:006:038:54
6:33
+0:11
21M
21.00 mi12:08:182:08:006:067:00
7:00
+0:27
35K
21.75 mi12:13:112:12:536:074:53
6:32
-0:28
23M
23.00 mi12:21:392:21:216:098:28
6:46
+0:14
24M
24.00 mi12:28:182:28:006:106:39
6:39
-0:07
40K
24.85 mi12:34:142:33:566:125:56
6:56
+0:17
25.2M
25.20 mi12:36:522:36:346:132:38
7:38
+0:42
Finish
26.22 mi12:43:382:43:206:146:46
6:38
-1:00

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

5:53 /mi

Average Pace

6:14 /mi

Slowest Pace

7:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:20

57% of race

Time at Steady Pace

55:26

34% of race

Time at Slower Pace

15:34

10% of race

Average Pace: 6:14 /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 mi10:18:3718:195:5418:19
5:54
#784
10K
6.21 mi10:36:5636:385:5418:19
5:54
#794
15K
9.32 mi10:55:1454:565:5418:18
5:53
#775
20K
12.43 mi11:13:471:13:295:5518:33
5:58
#771
Half
13.11 mi11:17:511:17:335:554:04
5:58
#780
25K
15.53 mi11:32:381:32:205:5714:47
6:06
#808
30K
18.64 mi11:52:241:52:066:0119:46
6:22
#860
20M
20.00 mi12:01:182:01:006:038:54
6:33
#888
21M
21.00 mi12:08:182:08:006:067:00
7:00
#927
35K
21.75 mi12:13:112:12:536:074:53
6:32
#953
23M
23.00 mi12:21:392:21:216:098:28
6:46
#993
24M
24.00 mi12:28:182:28:006:106:39
6:39
#1044
40K
24.85 mi12:34:142:33:566:125:56
6:56
#1094
25.2M
25.20 mi12:36:522:36:346:132:38
7:38
#1117
Finish
26.22 mi12:43:382:43:206:146:46
6:38
#1164
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi784731731741(Top 3%)693(Top 4%)693(Top 12%)
10K6.21 mi3.10 mi794-10742-11742-11815(Top 3%)764(Top 5%)764(Top 14%)
15K9.32 mi3.11 mi775+19724+18724+18741(Top 3%)693(Top 4%)693(Top 12%)
20K12.43 mi3.11 mi771+4721+3721+3809(Top 3%)760(Top 5%)760(Top 13%)
Half13.11 mi0.68 mi780-9729-8729-81023(Top 4%)970(Top 6%)970(Top 17%)
25K15.53 mi2.42 mi808-28757-28757-281084(Top 4%)1022(Top 6%)1022(Top 18%)
30K18.64 mi3.11 mi860-52808-51808-511403(Top 5%)1326(Top 8%)1326(Top 24%)
20M20.00 mi1.36 mi888-28836-28836-281791(Top 6%)1695(Top 11%)1695(Top 30%)
21M21.00 mi1.00 mi927-39872-36872-362224(Top 8%)2075(Top 13%)2075(Top 37%)
35K21.75 mi0.75 mi953-26897-25897-252549(Top 9%)2368(Top 15%)2368(Top 42%)
23M23.00 mi1.25 mi993-40935-38935-382496(Top 9%)2307(Top 14%)2307(Top 41%)
24M24.00 mi1.00 mi1044-51983-48983-482686(Top 9%)2460(Top 15%)2460(Top 44%)
40K24.85 mi0.85 mi1094-501031-481031-483519(Top 12%)3115(Top 19%)3115(Top 55%)
25.2M25.20 mi0.35 mi1117-231052-211052-213947(Top 14%)3363(Top 21%)3363(Top 60%)
Finish26.22 mi1.02 mi1164-471095-431095-433516(Top 12%)3063(Top 19%)3063(Top 54%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

741

Males

693

M18-39

693

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

815

Males

764

M18-39

764

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

741

Males

693

M18-39

693

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

809

Males

760

M18-39

760

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1023

Males

970

M18-39

970

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1084

Males

1022

M18-39

1022

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1403

Males

1326

M18-39

1326

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1791

Males

1695

M18-39

1695

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2224

Males

2075

M18-39

2075

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2549

Males

2368

M18-39

2368

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2496

Males

2307

M18-39

2307

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2686

Males

2460

M18-39

2460

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3519

Males

3115

M18-39

3115

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3947

Males

3363

M18-39

3363

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3516

Males

3063

M18-39

3063

Passing Analysis

Category:
Athletes Passed
216
Passed By
596
Net Change
-380
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#784
5K → 10K4050-10#784#794
10K → 15K3819+19#794#775
15K → 20K2622+4#775#771
20K → Half413-9#771#780
Half → 25K1543-28#780#808
25K → 30K2173-52#808#860
30K → 20M1240-28#860#888
20M → 21M1554-39#888#927
21M → 35K935-26#927#953
35K → 23M1555-40#953#993
23M → 24M455-51#993#1044
24M → 40K555-50#1044#1094
40K → 25.2M528-23#1094#1117
25.2M → Finish754-47#1117#1164
TOTALS216596-380
📊

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