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BOSTON MARATHON 2025

Heng Zhang

Bib: 6061•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Division (M18-39)
#0 / 5642
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:31
Rank: #4638
Start → 5K
20:31 | 6:36/mi
10K· 6.21 mi
41:14
Rank: #4786 (-148)
5K → 10K
20:43 | 6:40/mi
15K· 9.32 mi
1:01:49
Rank: #4642 (+144)
10K → 15K
20:35 | 6:38/mi
20K· 12.43 mi
1:22:46
Rank: #4636 (+6)
15K → 20K
20:57 | 6:45/mi
Half· 13.11 mi
1:27:15
Rank: #4603 (+33)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:43:37
Rank: #4547 (+56)
Half → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:05:00
Rank: #4363 (+184)
25K → 30K
21:23 | 6:53/mi
20M
2:14:22
Rank: #4245 (+118)
30K → 20M
9:22 | 6:54/mi
21M
2:21:35
Rank: #4151 (+94)
20M → 21M
7:13 | 7:13/mi
35K· 21.75 mi
2:26:35
Rank: #4107 (+44)
21M → 35K
5:00 | 6:41/mi
23M
2:35:10
Rank: #3999 (+108)
35K → 23M
8:35 | 6:51/mi
24M
2:41:39
Rank: #3854 (+145)
23M → 24M
6:29 | 6:29/mi
40K· 24.85 mi
2:47:13
Rank: #3717 (+137)
24M → 40K
5:34 | 6:31/mi
25.2M
2:49:37
Rank: #3628 (+89)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:55:59
Rank: #3484 (+144)
25.2M → Finish
6:22 | 6:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:15
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:28:44
Pace6:46 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:4020:316:3620:31
6:36
-
10K
6.21 mi10:45:2341:146:3820:43
6:40
+0:04
15K
9.32 mi11:05:581:01:496:3820:35
6:38
-0:02
20K
12.43 mi11:26:551:22:466:4020:57
6:45
+0:07
Half
13.11 mi11:31:241:27:156:394:29
6:34
-0:11
25K
15.53 mi11:47:461:43:376:4016:22
6:45
+0:11
30K
18.64 mi12:09:092:05:006:4221:23
6:53
+0:08
20M
20.00 mi12:18:312:14:226:439:22
6:54
+0:01
21M
21.00 mi12:25:442:21:356:457:13
7:13
+0:19
35K
21.75 mi12:30:442:26:356:445:00
6:41
-0:32
23M
23.00 mi12:39:192:35:106:458:35
6:51
+0:10
24M
24.00 mi12:45:482:41:396:446:29
6:29
-0:22
40K
24.85 mi12:51:222:47:136:445:34
6:31
+0:02
25.2M
25.20 mi12:53:462:49:376:442:24
6:58
+0:27
Finish
26.22 mi13:00:082:55:596:436:22
6:15
-0:43

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

6:15 /mi

Average Pace

6:43 /mi

Slowest Pace

7:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:37

77% of race

Time at Steady Pace

40:22

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:43 /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 mi10:24:4020:316:3620:31
6:36
#4638
10K
6.21 mi10:45:2341:146:3820:43
6:40
#4786
15K
9.32 mi11:05:581:01:496:3820:35
6:38
#4642
20K
12.43 mi11:26:551:22:466:4020:57
6:45
#4636
Half
13.11 mi11:31:241:27:156:394:29
6:34
#4603
25K
15.53 mi11:47:461:43:376:4016:22
6:45
#4547
30K
18.64 mi12:09:092:05:006:4221:23
6:53
#4363
20M
20.00 mi12:18:312:14:226:439:22
6:54
#4245
21M
21.00 mi12:25:442:21:356:457:13
7:13
#4151
35K
21.75 mi12:30:442:26:356:445:00
6:41
#4107
23M
23.00 mi12:39:192:35:106:458:35
6:51
#3999
24M
24.00 mi12:45:482:41:396:446:29
6:29
#3854
40K
24.85 mi12:51:222:47:136:445:34
6:31
#3717
25.2M
25.20 mi12:53:462:49:376:442:24
6:58
#3628
Finish
26.22 mi13:00:082:55:596:436:22
6:15
#3484
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4638435043504453(Top 16%)4174(Top 26%)4174(Top 74%)
10K6.21 mi3.10 mi4786-1484477-1274477-1275055(Top 18%)4712(Top 29%)4712(Top 84%)
15K9.32 mi3.11 mi4642+1444346+1314346+1314453(Top 16%)4174(Top 26%)4174(Top 74%)
20K12.43 mi3.11 mi4636+64333+134333+134802(Top 17%)4445(Top 28%)4445(Top 79%)
Half13.11 mi0.68 mi4603+334304+294304+294199(Top 15%)3938(Top 24%)3938(Top 70%)
25K15.53 mi2.42 mi4547+564249+554249+554496(Top 16%)4156(Top 26%)4156(Top 74%)
30K18.64 mi3.11 mi4363+1844081+1684081+1683974(Top 14%)3662(Top 23%)3662(Top 65%)
20M20.00 mi1.36 mi4245+1183969+1123969+1123489(Top 12%)3225(Top 20%)3225(Top 57%)
21M21.00 mi1.00 mi4151+943878+913878+913227(Top 11%)2975(Top 18%)2975(Top 53%)
35K21.75 mi0.75 mi4107+443829+493829+493433(Top 12%)3132(Top 19%)3132(Top 56%)
23M23.00 mi1.25 mi3999+1083724+1053724+1053003(Top 11%)2745(Top 17%)2745(Top 49%)
24M24.00 mi1.00 mi3854+1453596+1283596+1282005(Top 7%)1862(Top 12%)1862(Top 33%)
40K24.85 mi0.85 mi3717+1373470+1263470+1261672(Top 6%)1548(Top 10%)1548(Top 27%)
25.2M25.20 mi0.35 mi3628+893385+853385+851415(Top 5%)1302(Top 8%)1302(Top 23%)
Finish26.22 mi1.02 mi3484+1443253+1323253+1321712(Top 6%)1588(Top 10%)1588(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4453

Males

4174

M18-39

4174

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5055

Males

4712

M18-39

4712

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4453

Males

4174

M18-39

4174

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4802

Males

4445

M18-39

4445

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4199

Males

3938

M18-39

3938

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4496

Males

4156

M18-39

4156

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3974

Males

3662

M18-39

3662

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3489

Males

3225

M18-39

3225

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3227

Males

2975

M18-39

2975

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3433

Males

3132

M18-39

3132

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3003

Males

2745

M18-39

2745

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

2005

Males

1862

M18-39

1862

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1672

Males

1548

M18-39

1548

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1415

Males

1302

M18-39

1302

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1712

Males

1588

M18-39

1588

Passing Analysis

Category:
Athletes Passed
1789
Passed By
635
Net Change
+1154
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4638
5K → 10K109257-148#4638#4786
10K → 15K19753+144#4786#4642
15K → 20K122116+6#4642#4636
20K → Half418+33#4636#4603
Half → 25K13377+56#4603#4547
25K → 30K23551+184#4547#4363
30K → 20M13618+118#4363#4245
20M → 21M11117+94#4245#4151
21M → 35K5915+44#4151#4107
35K → 23M12214+108#4107#3999
23M → 24M1483+145#3999#3854
24M → 40K1403+137#3854#3717
40K → 25.2M890+89#3717#3628
25.2M → Finish1473+144#3628#3484
TOTALS1789635+1154
📊

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