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BOSTON MARATHON 2025

Shiying Liu

Bib: 19646•M

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

Start
0:00:00
Race begins
5K· 3.11 mi
27:34
Rank: #21858
Start → 5K
27:34 | 8:52/mi
10K· 6.21 mi
55:28
Rank: #22085 (-227)
5K → 10K
27:54 | 8:59/mi
15K· 9.32 mi
1:23:57
Rank: #22305 (-220)
10K → 15K
28:29 | 9:10/mi
20K· 12.43 mi
1:53:36
Rank: #22528 (-223)
15K → 20K
29:39 | 9:33/mi
Half· 13.11 mi
2:00:07
Rank: #22617 (-89)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:24:11
Rank: #22725 (-108)
Half → 25K
24:04 | 9:56/mi
30K· 18.64 mi
2:56:26
Rank: #22702 (+23)
25K → 30K
32:15 | 10:23/mi
20M
3:10:57
Rank: #22702
30K → 20M
14:31 | 10:41/mi
21M
3:23:11
Rank: #22805 (-103)
20M → 21M
12:14 | 12:14/mi
35K· 21.75 mi
3:30:33
Rank: #22730 (+75)
21M → 35K
7:22 | 9:51/mi
23M
3:43:19
Rank: #22627 (+103)
35K → 23M
12:46 | 10:12/mi
24M
3:53:14
Rank: #22540 (+87)
23M → 24M
9:55 | 9:55/mi
40K· 24.85 mi
4:02:00
Rank: #22483 (+57)
24M → 40K
8:46 | 10:15/mi
25.2M
4:06:02
Rank: #22486 (-3)
40K → 25.2M
4:02 | 11:42/mi
Finish· 26.22 mi
4:16:13
Rank: #22499 (-13)
25.2M → Finish
10:11 | 10:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:07
Pace9:10 /mi
2nd Half
Distance13.11 mi
Time2:16:06
Pace10:23 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:3327:348:5227:34
8:52
-
10K
6.21 mi11:52:2755:288:5627:54
8:59
+0:07
15K
9.32 mi12:20:561:23:579:0028:29
9:10
+0:11
20K
12.43 mi12:50:351:53:369:0829:39
9:33
+0:23
Half
13.11 mi12:57:062:00:079:106:31
9:33
0:00
25K
15.53 mi13:21:102:24:119:1724:04
9:56
+0:23
30K
18.64 mi13:53:252:56:269:2832:15
10:23
+0:27
20M
20.00 mi14:07:563:10:579:3314:31
10:41
+0:18
21M
21.00 mi14:20:103:23:119:4112:14
12:14
+1:33
35K
21.75 mi14:27:323:30:339:417:22
9:51
-2:23
23M
23.00 mi14:40:183:43:199:4312:46
10:12
+0:21
24M
24.00 mi14:50:133:53:149:439:55
9:55
-0:17
40K
24.85 mi14:58:594:02:009:448:46
10:15
+0:20
25.2M
25.20 mi15:03:014:06:029:464:02
11:42
+1:27
Finish
26.22 mi15:13:124:16:139:4710:11
10:00
-1:42

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

8:52 /mi

Average Pace

9:47 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:57

33% of race

Time at Steady Pace

1:49:14

43% of race

Time at Slower Pace

1:03:02

25% of race

Average Pace: 9:46 /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 mi11:24:3327:348:5227:34
8:52
#21858
10K
6.21 mi11:52:2755:288:5627:54
8:59
#22085
15K
9.32 mi12:20:561:23:579:0028:29
9:10
#22305
20K
12.43 mi12:50:351:53:369:0829:39
9:33
#22528
Half
13.11 mi12:57:062:00:079:106:31
9:33
#22617
25K
15.53 mi13:21:102:24:119:1724:04
9:56
#22725
30K
18.64 mi13:53:252:56:269:2832:15
10:23
#22702
20M
20.00 mi14:07:563:10:579:3314:31
10:41
#22702
21M
21.00 mi14:20:103:23:119:4112:14
12:14
#22805
35K
21.75 mi14:27:323:30:339:417:22
9:51
#22730
23M
23.00 mi14:40:183:43:199:4312:46
10:12
#22627
24M
24.00 mi14:50:133:53:149:439:55
9:55
#22540
40K
24.85 mi14:58:594:02:009:448:46
10:15
#22483
25.2M
25.20 mi15:03:014:06:029:464:02
11:42
#22486
Finish
26.22 mi15:13:124:16:139:4710:11
10:00
#22499
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi21858132521325222735(Top 80%)13708(Top 85%)13708(Top 832%)
10K6.21 mi3.10 mi22085-22713364-11213364-11222291(Top 78%)13469(Top 84%)13469(Top 817%)
15K9.32 mi3.11 mi22305-22013488-12413488-12422735(Top 80%)13708(Top 85%)13708(Top 832%)
20K12.43 mi3.11 mi22528-22313591-10313591-10323033(Top 81%)13804(Top 86%)13804(Top 838%)
Half13.11 mi0.68 mi22617-8913645-5413645-5423678(Top 83%)14081(Top 87%)14081(Top 854%)
25K15.53 mi2.42 mi22725-10813675-3013675-3023056(Top 81%)13773(Top 86%)13773(Top 836%)
30K18.64 mi3.11 mi22702+2313622+5313622+5322655(Top 80%)13460(Top 84%)13460(Top 817%)
20M20.00 mi1.36 mi2270213593+2913593+2922904(Top 81%)13477(Top 84%)13477(Top 818%)
21M21.00 mi1.00 mi22805-10313624-3113624-3123984(Top 84%)13899(Top 86%)13899(Top 843%)
35K21.75 mi0.75 mi22730+7513575+4913575+4921457(Top 76%)12653(Top 79%)12653(Top 768%)
23M23.00 mi1.25 mi22627+10313507+6813507+6821099(Top 74%)12441(Top 77%)12441(Top 755%)
24M24.00 mi1.00 mi22540+8713442+6513442+6521111(Top 74%)12401(Top 77%)12401(Top 752%)
40K24.85 mi0.85 mi22483+5713400+4213400+4221232(Top 75%)12396(Top 77%)12396(Top 752%)
25.2M25.20 mi0.35 mi22486-313394+613394+622535(Top 79%)13050(Top 81%)13050(Top 792%)
Finish26.22 mi1.02 mi22499-1313378+1613378+1622914(Top 81%)13230(Top 82%)13230(Top 803%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

22735

Males

13708

M55-59

13708

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22291

Males

13469

M55-59

13469

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

22735

Males

13708

M55-59

13708

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

23033

Males

13804

M55-59

13804

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23678

Males

14081

M55-59

14081

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

23056

Males

13773

M55-59

13773

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

22655

Males

13460

M55-59

13460

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

22904

Males

13477

M55-59

13477

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

23984

Males

13899

M55-59

13899

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21457

Males

12653

M55-59

12653

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

21099

Males

12441

M55-59

12441

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21111

Males

12401

M55-59

12401

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21232

Males

12396

M55-59

12396

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

22535

Males

13050

M55-59

13050

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

22914

Males

13230

M55-59

13230

Passing Analysis

Category:
Athletes Passed
1262
Passed By
1903
Net Change
-641
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21858
5K → 10K166393-227#21858#22085
10K → 15K124344-220#22085#22305
15K → 20K106329-223#22305#22528
20K → Half13102-89#22528#22617
Half → 25K115223-108#22617#22725
25K → 30K172149+23#22725#22702
30K → 20M76760#22702#22702
20M → 21M35138-103#22702#22805
21M → 35K8712+75#22805#22730
35K → 23M13027+103#22730#22627
23M → 24M9912+87#22627#22540
24M → 40K7720+57#22540#22483
40K → 25.2M1821-3#22483#22486
25.2M → Finish4457-13#22486#22499
TOTALS12621903-641
📊

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