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BOSTON MARATHON 2025

Jiahong Li

Bib: 28625•M

PA

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
29:39
Rank: #24375
Start → 5K
9:33/mi
29:39 split
10K· 6.21 mi
58:40
Rank: #24010 (+365)
5K → 10K
9:20/mi
29:01 split
15K· 9.32 mi
1:26:59
Rank: #23549 (+461)
10K → 15K
9:07/mi
28:19 split
20K· 12.43 mi
1:56:23
Rank: #23334 (+215)
15K → 20K
9:28/mi
29:24 split
Half· 13.11 mi
2:02:44
Rank: #23314 (+20)
20K → Half
9:18/mi
6:21 split
25K· 15.53 mi
2:25:54
Rank: #23099 (+215)
Half → 25K
9:33/mi
23:10 split
30K· 18.64 mi
2:55:55
Rank: #22624 (+475)
25K → 30K
9:40/mi
30:01 split
20M
3:08:39
Rank: #22353 (+271)
30K → 20M
9:22/mi
12:44 split
21M
3:18:39
Rank: #22118 (+235)
20M → 21M
10:00/mi
10:00 split
35K· 21.75 mi
3:25:44
Rank: #22037 (+81)
21M → 35K
9:28/mi
7:05 split
23M
3:37:43
Rank: #21845 (+192)
35K → 23M
9:34/mi
11:59 split
24M
3:46:39
Rank: #21670 (+175)
23M → 24M
8:56/mi
8:56 split
40K· 24.85 mi
3:54:19
Rank: #21482 (+188)
24M → 40K
8:58/mi
7:40 split
25.2M
3:57:34
Rank: #21383 (+99)
40K → 25.2M
9:25/mi
3:15 split
Finish· 26.22 mi
4:06:39
Rank: #21283 (+100)
25.2M → Finish
8:55/mi
9:05 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:02:44
Pace9:22 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:03:55
Pace9:27 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:2729:399:3329:39
9:33
-
10K
6.21 mi12:14:2858:409:2629:01
9:20
-0:13
15K
9.32 mi12:42:471:26:599:2028:19
9:07
-0:13
20K
12.43 mi13:12:111:56:239:2229:24
9:28
+0:21
Half
13.11 mi13:18:322:02:449:226:21
9:18
-0:10
25K
15.53 mi13:41:422:25:549:2423:10
9:33
+0:15
30K
18.64 mi14:11:432:55:559:2630:01
9:40
+0:07
20M
20.00 mi14:24:273:08:399:2612:44
9:22
-0:18
21M
21.00 mi14:34:273:18:399:2810:00
10:00
+0:38
35K
21.75 mi14:41:323:25:449:287:05
9:28
-0:32
23M
23.00 mi14:53:313:37:439:2811:59
9:34
+0:06
24M
24.00 mi15:02:273:46:399:278:56
8:56
-0:38
40K
24.85 mi15:10:073:54:199:267:40
8:58
+0:02
25.2M
25.20 mi15:13:223:57:349:263:15
9:25
+0:27
Finish
26.22 mi15:22:274:06:399:259:05
8:55
-0:30

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

8:55 /mi

Average Pace

9:25 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:56:39

96% of race

Time at Steady Pace

10:00

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:24 /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 mi11:45:2729:399:3329:39
9:33
#24375
10K
6.21 mi12:14:2858:409:2629:01
9:20
#24010
15K
9.32 mi12:42:471:26:599:2028:19
9:07
#23549
20K
12.43 mi13:12:111:56:239:2229:24
9:28
#23334
Half
13.11 mi13:18:322:02:449:226:21
9:18
#23314
25K
15.53 mi13:41:422:25:549:2423:10
9:33
#23099
30K
18.64 mi14:11:432:55:559:2630:01
9:40
#22624
20M
20.00 mi14:24:273:08:399:2612:44
9:22
#22353
21M
21.00 mi14:34:273:18:399:2810:00
10:00
#22118
35K
21.75 mi14:41:323:25:449:287:05
9:28
#22037
23M
23.00 mi14:53:313:37:439:2811:59
9:34
#21845
24M
24.00 mi15:02:273:46:399:278:56
8:56
#21670
40K
24.85 mi15:10:073:54:199:267:40
8:58
#21482
25.2M
25.20 mi15:13:223:57:349:263:15
9:25
#21383
Finish
26.22 mi15:22:274:06:399:259:05
8:55
#21283
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi24375144231442322513(Top 79%)13610(Top 85%)13610(Top 826%)
10K6.21 mi3.10 mi24010+36514255+16814255+16823641(Top 83%)14093(Top 88%)14093(Top 855%)
15K9.32 mi3.11 mi23549+46114050+20514050+20522513(Top 79%)13610(Top 85%)13610(Top 826%)
20K12.43 mi3.11 mi23334+21513968+8213968+8222779(Top 80%)13693(Top 85%)13693(Top 831%)
Half13.11 mi0.68 mi23314+2013959+913959+922956(Top 81%)13764(Top 85%)13764(Top 835%)
25K15.53 mi2.42 mi23099+21513843+11613843+11622044(Top 78%)13309(Top 83%)13309(Top 808%)
30K18.64 mi3.11 mi22624+47513581+26213581+26220573(Top 72%)12547(Top 78%)12547(Top 761%)
20M20.00 mi1.36 mi22353+27113445+13613445+13618615(Top 66%)11510(Top 71%)11510(Top 698%)
21M21.00 mi1.00 mi22118+23513329+11613329+11618287(Top 64%)11303(Top 70%)11303(Top 686%)
35K21.75 mi0.75 mi22037+8113280+4913280+4920214(Top 71%)12077(Top 75%)12077(Top 733%)
23M23.00 mi1.25 mi21845+19213155+12513155+12518975(Top 67%)11429(Top 71%)11429(Top 694%)
24M24.00 mi1.00 mi21670+17513062+9313062+9317017(Top 60%)10474(Top 65%)10474(Top 636%)
40K24.85 mi0.85 mi21482+18812963+9912963+9916105(Top 57%)9978(Top 62%)9978(Top 605%)
25.2M25.20 mi0.35 mi21383+9912908+5512908+5514151(Top 50%)9036(Top 56%)9036(Top 548%)
Finish26.22 mi1.02 mi21283+10012848+6012848+6018595(Top 65%)11175(Top 69%)11175(Top 678%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

22513

Males

13610

M55-59

13610

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

23641

Males

14093

M55-59

14093

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

22513

Males

13610

M55-59

13610

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

22779

Males

13693

M55-59

13693

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22956

Males

13764

M55-59

13764

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22044

Males

13309

M55-59

13309

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

20573

Males

12547

M55-59

12547

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

18615

Males

11510

M55-59

11510

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18287

Males

11303

M55-59

11303

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20214

Males

12077

M55-59

12077

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

18975

Males

11429

M55-59

11429

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

17017

Males

10474

M55-59

10474

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16105

Males

9978

M55-59

9978

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14151

Males

9036

M55-59

9036

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

18595

Males

11175

M55-59

11175

Passing Analysis

Category:
Athletes Passed
3348
Passed By
256
Net Change
+3092
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24375
5K → 10K46095+365#24375#24010
10K → 15K47211+461#24010#23549
15K → 20K26954+215#23549#23334
20K → Half4222+20#23334#23314
Half → 25K24732+215#23314#23099
25K → 30K4816+475#23099#22624
30K → 20M2721+271#22624#22353
20M → 21M2383+235#22353#22118
21M → 35K9211+81#22118#22037
35K → 23M2019+192#22037#21845
23M → 24M1761+175#21845#21670
24M → 40K1902+188#21670#21482
40K → 25.2M1001+99#21482#21383
25.2M → Finish1088+100#21383#21283
TOTALS3348256+3092
📊

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