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BOSTON MARATHON 2025

Zhi Hong Li

Bib: 11431•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 41%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 43%
Division (M45-49)
#0 / 2386
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
7:21/mi
22:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
46:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:09:18
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:33:25
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:38:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
1:57:55
↑ 66↓ 880.2%
30K· 18.64 mi
8:09/mi
2:23:15
↑ 181↓ 1480.2%
20M
8:16/mi
2:34:29
↑ 64↓ 500.2%
21M
8:44/mi
2:43:13
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:48:54
↑ 17↓ 861.7%
23M
8:10/mi
2:59:07
↑ 23↓ 630.6%
24M
7:51/mi
3:06:58
↓ 821.3%
40K· 24.85 mi
8:29/mi
3:14:13
↓ 200.3%
25.2M
8:36/mi
3:17:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:24:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:55
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:45:56
Pace8:05 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2322:507:2122:50
7:21
-
10K
6.21 mi11:12:3546:027:2523:12
7:28
+0:07
15K
9.32 mi11:35:511:09:187:2623:16
7:29
+0:01
20K
12.43 mi11:59:581:33:257:3124:07
7:46
+0:17
Half
13.11 mi12:05:281:38:557:335:30
8:04
+0:18
25K
15.53 mi12:24:281:57:557:3519:00
7:50
-0:14
30K
18.64 mi12:49:482:23:157:4125:20
8:09
+0:19
20M
20.00 mi13:01:022:34:297:4311:14
8:16
+0:07
21M
21.00 mi13:09:462:43:137:468:44
8:44
+0:28
35K
21.75 mi13:15:272:48:547:465:41
7:36
-1:08
23M
23.00 mi13:25:402:59:077:4710:13
8:10
+0:34
24M
24.00 mi13:33:313:06:587:477:51
7:51
-0:19
40K
24.85 mi13:40:463:14:137:497:15
8:29
+0:38
25.2M
25.20 mi13:43:443:17:117:492:58
8:36
+0:07
Finish
26.22 mi13:51:243:24:517:497:40
7:31
-1:05

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

7:21 /mi

Average Pace

7:49 /mi

Slowest Pace

8:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:07

68% of race

Time at Steady Pace

57:00

28% of race

Time at Slower Pace

8:44

4% of race

Average Pace: 7:49 /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 mi10:49:2322:507:2122:50
7:21
#10846
10K
6.21 mi11:12:3546:027:2523:12
7:28
#11309
15K
9.32 mi11:35:511:09:187:2623:16
7:29
#11400
20K
12.43 mi11:59:581:33:257:3124:07
7:46
#11780
Half
13.11 mi12:05:281:38:557:335:30
8:04
#12032
25K
15.53 mi12:24:281:57:557:3519:00
7:50
#12085
30K
18.64 mi12:49:482:23:157:4125:20
8:09
#12109
20M
20.00 mi13:01:022:34:297:4311:14
8:16
#12105
21M
21.00 mi13:09:462:43:137:468:44
8:44
#12079
35K
21.75 mi13:15:272:48:547:465:41
7:36
#11934
23M
23.00 mi13:25:402:59:077:4710:13
8:10
#11870
24M
24.00 mi13:33:313:06:587:477:51
7:51
#11773
40K
24.85 mi13:40:463:14:137:497:15
8:29
#11801
25.2M
25.20 mi13:43:443:17:117:492:58
8:36
#11760
Finish
26.22 mi13:51:243:24:517:497:40
7:31
#11635
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi108468617861711660(Top 41%)8906(Top 55%)8906(Top 373%)
10K6.21 mi3.10 mi11309-4638829-2128829-21211771(Top 41%)9036(Top 56%)9036(Top 379%)
15K9.32 mi3.11 mi11400-918842-138842-1311660(Top 41%)8906(Top 55%)8906(Top 373%)
20K12.43 mi3.11 mi11780-3808994-1528994-15212945(Top 46%)9390(Top 58%)9390(Top 394%)
Half13.11 mi0.68 mi12032-2529103-1099103-10916288(Top 57%)10865(Top 67%)10865(Top 455%)
25K15.53 mi2.42 mi12085-539092+119092+1112614(Top 44%)9120(Top 57%)9120(Top 382%)
30K18.64 mi3.11 mi12109-249028+649028+6412465(Top 44%)8887(Top 55%)8887(Top 372%)
20M20.00 mi1.36 mi12105+48990+388990+3812240(Top 43%)8637(Top 54%)8637(Top 362%)
21M21.00 mi1.00 mi12079+268936+548936+5411859(Top 42%)8307(Top 52%)8307(Top 348%)
35K21.75 mi0.75 mi11934+1458848+888848+889317(Top 33%)7023(Top 44%)7023(Top 294%)
23M23.00 mi1.25 mi11870+648768+808768+8011105(Top 39%)7800(Top 48%)7800(Top 327%)
24M24.00 mi1.00 mi11773+978685+838685+8310179(Top 36%)7260(Top 45%)7260(Top 304%)
40K24.85 mi0.85 mi11801-288671+148671+1413271(Top 47%)8646(Top 54%)8646(Top 362%)
25.2M25.20 mi0.35 mi11760+418635+368635+369404(Top 33%)6656(Top 41%)6656(Top 279%)
Finish26.22 mi1.02 mi11635+1258533+1028533+1029352(Top 33%)6638(Top 41%)6638(Top 278%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11660

Males

8906

M45-49

8906

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11771

Males

9036

M45-49

9036

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11660

Males

8906

M45-49

8906

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12945

Males

9390

M45-49

9390

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16288

Males

10865

M45-49

10865

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12614

Males

9120

M45-49

9120

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12465

Males

8887

M45-49

8887

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12240

Males

8637

M45-49

8637

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11859

Males

8307

M45-49

8307

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9317

Males

7023

M45-49

7023

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11105

Males

7800

M45-49

7800

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10179

Males

7260

M45-49

7260

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13271

Males

8646

M45-49

8646

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9404

Males

6656

M45-49

6656

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9352

Males

6638

M45-49

6638

Passing Analysis

Category:
Athletes Passed
1646
Passed By
2435
Net Change
-789
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10846
5K → 10K101564-463#10846#11309
10K → 15K150241-91#11309#11400
15K → 20K85465-380#11400#11780
20K → Half6258-252#11780#12032
Half → 25K145198-53#12032#12085
25K → 30K239263-24#12085#12109
30K → 20M116112+4#12109#12105
20M → 21M11084+26#12105#12079
21M → 35K1516+145#12079#11934
35K → 23M13571+64#11934#11870
23M → 24M12528+97#11870#11773
24M → 40K6896-28#11773#11801
40K → 25.2M5716+41#11801#11760
25.2M → Finish15833+125#11760#11635
TOTALS16462435-789
📊

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