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BOSTON MARATHON 2025

Junfeng Zhang

Bib: 5342•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 26%
Masters (Masters Men)
#0 / 10463
Top 12%
Division (M45-49)
#0 / 2386
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:30
Rank: #7218
Start → 5K
21:30 | 6:55/mi
10K· 6.21 mi
42:37
Rank: #6822 (+396)
5K → 10K
21:07 | 6:48/mi
15K· 9.32 mi
1:03:33
Rank: #6379 (+443)
10K → 15K
20:56 | 6:44/mi
20K· 12.43 mi
1:24:42
Rank: #6077 (+302)
15K → 20K
21:09 | 6:48/mi
Half· 13.11 mi
1:29:17
Rank: #6040 (+37)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:43
Rank: #5764 (+276)
Half → 25K
16:26 | 6:47/mi
30K· 18.64 mi
2:07:15
Rank: #5381 (+383)
25K → 30K
21:32 | 6:56/mi
20M
2:16:48
Rank: #5268 (+113)
30K → 20M
9:33 | 7:02/mi
21M
2:24:11
Rank: #5153 (+115)
20M → 21M
7:23 | 7:23/mi
35K· 21.75 mi
2:29:09
Rank: #5053 (+100)
21M → 35K
4:58 | 6:38/mi
23M
2:37:46
Rank: #4871 (+182)
35K → 23M
8:37 | 6:53/mi
24M
2:44:24
Rank: #4721 (+150)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:50:13
Rank: #4611 (+110)
24M → 40K
5:49 | 6:48/mi
25.2M
2:52:47
Rank: #4581 (+30)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:59:25
Rank: #4494 (+87)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:17
Pace6:49 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:30:08
Pace6:53 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0221:306:5521:30
6:55
-
10K
6.21 mi10:47:0942:376:5221:07
6:48
-0:07
15K
9.32 mi11:08:051:03:336:4920:56
6:44
-0:04
20K
12.43 mi11:29:141:24:426:4921:09
6:48
+0:04
Half
13.11 mi11:33:491:29:176:494:35
6:43
-0:05
25K
15.53 mi11:50:151:45:436:4816:26
6:47
+0:04
30K
18.64 mi12:11:472:07:156:5021:32
6:56
+0:09
20M
20.00 mi12:21:202:16:486:509:33
7:02
+0:06
21M
21.00 mi12:28:432:24:116:527:23
7:23
+0:21
35K
21.75 mi12:33:412:29:096:514:58
6:38
-0:45
23M
23.00 mi12:42:182:37:466:528:37
6:53
+0:15
24M
24.00 mi12:48:562:44:246:516:38
6:38
-0:15
40K
24.85 mi12:54:452:50:136:515:49
6:48
+0:10
25.2M
25.20 mi12:57:192:52:476:512:34
7:27
+0:39
Finish
26.22 mi13:03:572:59:256:516:38
6:31
-0:56

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

6:31 /mi

Average Pace

6:51 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:28

94% of race

Time at Steady Pace

9:57

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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 mi10:26:0221:306:5521:30
6:55
#7218
10K
6.21 mi10:47:0942:376:5221:07
6:48
#6822
15K
9.32 mi11:08:051:03:336:4920:56
6:44
#6379
20K
12.43 mi11:29:141:24:426:4921:09
6:48
#6077
Half
13.11 mi11:33:491:29:176:494:35
6:43
#6040
25K
15.53 mi11:50:151:45:436:4816:26
6:47
#5764
30K
18.64 mi12:11:472:07:156:5021:32
6:56
#5381
20M
20.00 mi12:21:202:16:486:509:33
7:02
#5268
21M
21.00 mi12:28:432:24:116:527:23
7:23
#5153
35K
21.75 mi12:33:412:29:096:514:58
6:38
#5053
23M
23.00 mi12:42:182:37:466:528:37
6:53
#4871
24M
24.00 mi12:48:562:44:246:516:38
6:38
#4721
40K
24.85 mi12:54:452:50:136:515:49
6:48
#4611
25.2M
25.20 mi12:57:192:52:476:512:34
7:27
#4581
Finish
26.22 mi13:03:572:59:256:516:38
6:31
#4494
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7218645964595455(Top 19%)5014(Top 31%)5014(Top 210%)
10K6.21 mi3.10 mi6822+3966152+3076152+3076353(Top 22%)5762(Top 36%)5762(Top 241%)
15K9.32 mi3.11 mi6379+4435809+3435809+3435455(Top 19%)5014(Top 31%)5014(Top 210%)
20K12.43 mi3.11 mi6077+3025547+2625547+2625373(Top 19%)4929(Top 31%)4929(Top 207%)
Half13.11 mi0.68 mi6040+375513+345513+345460(Top 19%)5015(Top 31%)5015(Top 210%)
25K15.53 mi2.42 mi5764+2765280+2335280+2334708(Top 17%)4337(Top 27%)4337(Top 182%)
30K18.64 mi3.11 mi5381+3834936+3444936+3444286(Top 15%)3936(Top 24%)3936(Top 165%)
20M20.00 mi1.36 mi5268+1134830+1064830+1064292(Top 15%)3915(Top 24%)3915(Top 164%)
21M21.00 mi1.00 mi5153+1154729+1014729+1014038(Top 14%)3661(Top 23%)3661(Top 153%)
35K21.75 mi0.75 mi5053+1004639+904639+903194(Top 11%)2936(Top 18%)2936(Top 123%)
23M23.00 mi1.25 mi4871+1824475+1644475+1643140(Top 11%)2870(Top 18%)2870(Top 120%)
24M24.00 mi1.00 mi4721+1504339+1364339+1362668(Top 9%)2451(Top 15%)2451(Top 103%)
40K24.85 mi0.85 mi4611+1104236+1034236+1032888(Top 10%)2614(Top 16%)2614(Top 110%)
25.2M25.20 mi0.35 mi4581+304206+304206+303194(Top 11%)2835(Top 18%)2835(Top 119%)
Finish26.22 mi1.02 mi4494+874121+854121+852890(Top 10%)2585(Top 16%)2585(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5455

Males

5014

M45-49

5014

5K→10K

3.1 - 6.2 mi

Top 22%
×5stories
+79ft-138ft

Overall

6353

Males

5762

M45-49

5762

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5455

Males

5014

M45-49

5014

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5373

Males

4929

M45-49

4929

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5460

Males

5015

M45-49

5015

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4708

Males

4337

M45-49

4337

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4286

Males

3936

M45-49

3936

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4292

Males

3915

M45-49

3915

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

4038

Males

3661

M45-49

3661

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3194

Males

2936

M45-49

2936

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3140

Males

2870

M45-49

2870

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2668

Males

2451

M45-49

2451

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2888

Males

2614

M45-49

2614

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3194

Males

2835

M45-49

2835

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2890

Males

2585

M45-49

2585

Passing Analysis

Category:
Athletes Passed
2953
Passed By
229
Net Change
+2724
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7218
5K → 10K45155+396#7218#6822
10K → 15K45916+443#6822#6379
15K → 20K32523+302#6379#6077
20K → Half447+37#6077#6040
Half → 25K28812+276#6040#5764
25K → 30K40017+383#5764#5381
30K → 20M13825+113#5381#5268
20M → 21M14227+115#5268#5153
21M → 35K1077+100#5153#5053
35K → 23M1875+182#5053#4871
23M → 24M1544+150#4871#4721
24M → 40K1177+110#4721#4611
40K → 25.2M4010+30#4611#4581
25.2M → Finish10114+87#4581#4494
TOTALS2953229+2724
📊

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