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BOSTON MARATHON 2025

Jun Zhang

Bib: 8812•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 48%
Division (M50-54)
#0 / 1996
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
7:30/mi
23:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
46:41
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:09:45
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:33:24
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:38:36
↑ 19↓ 370.5%
25K· 15.53 mi
8:06/mi
1:58:15
↑ 66↓ 880.2%
30K· 18.64 mi
8:26/mi
2:24:26
↑ 181↓ 1480.2%
20M
8:18/mi
2:35:43
↑ 64↓ 500.2%
21M
9:04/mi
2:44:47
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
2:51:10
↑ 17↓ 861.7%
23M
8:33/mi
3:01:52
↑ 23↓ 630.6%
24M
8:22/mi
3:10:14
↓ 821.3%
40K· 24.85 mi
8:35/mi
3:17:34
↓ 200.3%
25.2M
9:25/mi
3:20:49
↑ 13↓ 160.2%
Finish· 26.22 mi
8:09/mi
3:29:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:36
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:50:31
Pace8:26 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5223:177:3023:17
7:30
-
10K
6.21 mi11:13:1646:417:3123:24
7:32
+0:02
15K
9.32 mi11:36:201:09:457:2923:04
7:25
-0:07
20K
12.43 mi11:59:591:33:247:3123:39
7:37
+0:12
Half
13.11 mi12:05:111:38:367:315:12
7:37
0:00
25K
15.53 mi12:24:501:58:157:3719:39
8:06
+0:29
30K
18.64 mi12:51:012:24:267:4526:11
8:26
+0:20
20M
20.00 mi13:02:182:35:437:4711:17
8:18
-0:08
21M
21.00 mi13:11:222:44:477:519:04
9:04
+0:46
35K
21.75 mi13:17:452:51:107:526:23
8:32
-0:32
23M
23.00 mi13:28:273:01:527:5410:42
8:33
+0:01
24M
24.00 mi13:36:493:10:147:568:22
8:22
-0:11
40K
24.85 mi13:44:093:17:347:577:20
8:35
+0:13
25.2M
25.20 mi13:47:243:20:497:583:15
9:25
+0:50
Finish
26.22 mi13:55:423:29:077:598:18
8:09
-1:16

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

7:25 /mi

Average Pace

7:59 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:36

47% of race

Time at Steady Pace

1:38:12

47% of race

Time at Slower Pace

12:19

6% of race

Average Pace: 7:59 /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 mi10:49:5223:177:3023:17
7:30
#12186
10K
6.21 mi11:13:1646:417:3123:24
7:32
#12246
15K
9.32 mi11:36:201:09:457:2923:04
7:25
#11841
20K
12.43 mi11:59:591:33:247:3123:39
7:37
#11769
Half
13.11 mi12:05:111:38:367:315:12
7:37
#11814
25K
15.53 mi12:24:501:58:157:3719:39
8:06
#12291
30K
18.64 mi12:51:012:24:267:4526:11
8:26
#12640
20M
20.00 mi13:02:182:35:437:4711:17
8:18
#12614
21M
21.00 mi13:11:222:44:477:519:04
9:04
#12668
35K
21.75 mi13:17:452:51:107:526:23
8:32
#12812
23M
23.00 mi13:28:273:01:527:5410:42
8:33
#12808
24M
24.00 mi13:36:493:10:147:568:22
8:22
#12848
40K
24.85 mi13:44:093:17:347:577:20
8:35
#12883
25.2M
25.20 mi13:47:243:20:497:583:15
9:25
#12915
Finish
26.22 mi13:55:423:29:077:598:18
8:09
#12943
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi121869260926011095(Top 39%)8649(Top 54%)8649(Top 433%)
10K6.21 mi3.10 mi12246-609277-179277-1712381(Top 44%)9324(Top 58%)9324(Top 467%)
15K9.32 mi3.11 mi11841+4059072+2059072+20511095(Top 39%)8649(Top 54%)8649(Top 433%)
20K12.43 mi3.11 mi11769+728989+838989+8311681(Top 41%)8825(Top 55%)8825(Top 442%)
Half13.11 mi0.68 mi11814-458999-108999-1012714(Top 45%)9337(Top 58%)9337(Top 468%)
25K15.53 mi2.42 mi12291-4779187-1889187-18814653(Top 52%)10043(Top 62%)10043(Top 503%)
30K18.64 mi3.11 mi12640-3499263-769263-7614295(Top 50%)9723(Top 60%)9723(Top 487%)
20M20.00 mi1.36 mi12614+269213+509213+5012490(Top 44%)8769(Top 54%)8769(Top 439%)
21M21.00 mi1.00 mi12668-549207+69207+613877(Top 49%)9274(Top 58%)9274(Top 465%)
35K21.75 mi0.75 mi12812-1449254-479254-4715622(Top 55%)9990(Top 62%)9990(Top 501%)
23M23.00 mi1.25 mi12808+49218+369218+3613580(Top 48%)8972(Top 56%)8972(Top 449%)
24M24.00 mi1.00 mi12848-409197+219197+2113638(Top 48%)8965(Top 56%)8965(Top 449%)
40K24.85 mi0.85 mi12883-359181+169181+1613904(Top 49%)8953(Top 56%)8953(Top 449%)
25.2M25.20 mi0.35 mi12915-329186-59186-514086(Top 50%)8971(Top 56%)8971(Top 449%)
Finish26.22 mi1.02 mi12943-289179+79179+713879(Top 49%)8948(Top 56%)8948(Top 448%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11095

Males

8649

M50-54

8649

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12381

Males

9324

M50-54

9324

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11095

Males

8649

M50-54

8649

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11681

Males

8825

M50-54

8825

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12714

Males

9337

M50-54

9337

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14653

Males

10043

M50-54

10043

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14295

Males

9723

M50-54

9723

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12490

Males

8769

M50-54

8769

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13877

Males

9274

M50-54

9274

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15622

Males

9990

M50-54

9990

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

13580

Males

8972

M50-54

8972

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13638

Males

8965

M50-54

8965

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

13904

Males

8953

M50-54

8953

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14086

Males

8971

M50-54

8971

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13879

Males

8948

M50-54

8948

Passing Analysis

Category:
Athletes Passed
1714
Passed By
2471
Net Change
-757
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12186
5K → 10K224284-60#12186#12246
10K → 15K44843+405#12246#11841
15K → 20K232160+72#11841#11769
20K → Half1964-45#11769#11814
Half → 25K66543-477#11814#12291
25K → 30K146495-349#12291#12640
30K → 20M12397+26#12640#12614
20M → 21M98152-54#12614#12668
21M → 35K32176-144#12668#12812
35K → 23M107103+4#12812#12808
23M → 24M70110-40#12808#12848
24M → 40K5994-35#12848#12883
40K → 25.2M2658-32#12883#12915
25.2M → Finish6492-28#12915#12943
TOTALS17142471-757
📊

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