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BOSTON MARATHON 2025

Xun Zhang

Bib: 4712•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:25
Rank: #2137
Start → 5K
19:25 | 6:15/mi
10K· 6.21 mi
39:09
Rank: #2410 (-273)
5K → 10K
19:44 | 6:21/mi
15K· 9.32 mi
59:00
Rank: #2567 (-157)
10K → 15K
19:51 | 6:23/mi
20K· 12.43 mi
1:18:59
Rank: #2586 (-19)
15K → 20K
19:59 | 6:26/mi
Half· 13.11 mi
1:23:15
Rank: #2557 (+29)
20K → Half
4:16 | 6:15/mi
25K· 15.53 mi
1:38:48
Rank: #2516 (+41)
Half → 25K
15:33 | 6:25/mi
30K· 18.64 mi
1:59:13
Rank: #2421 (+95)
25K → 30K
20:25 | 6:34/mi
20M
2:08:23
Rank: #2416 (+5)
30K → 20M
9:10 | 6:45/mi
21M
2:15:20
Rank: #2347 (+69)
20M → 21M
6:57 | 6:57/mi
35K· 21.75 mi
2:20:04
Rank: #2314 (+33)
21M → 35K
4:44 | 6:20/mi
23M
2:28:23
Rank: #2267 (+47)
35K → 23M
8:19 | 6:39/mi
24M
2:34:47
Rank: #2208 (+59)
23M → 24M
6:24 | 6:24/mi
40K· 24.85 mi
2:40:20
Rank: #2155 (+53)
24M → 40K
5:33 | 6:29/mi
25.2M
2:42:47
Rank: #2132 (+23)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:49:03
Rank: #2089 (+43)
25.2M → Finish
6:16 | 6:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:15
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:25:48
Pace6:33 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2019:256:1519:25
6:15
-
10K
6.21 mi10:42:0439:096:1819:44
6:21
+0:06
15K
9.32 mi11:01:5559:006:2019:51
6:23
+0:02
20K
12.43 mi11:21:541:18:596:2119:59
6:26
+0:03
Half
13.11 mi11:26:101:23:156:214:16
6:15
-0:11
25K
15.53 mi11:41:431:38:486:2215:33
6:25
+0:10
30K
18.64 mi12:02:081:59:136:2420:25
6:34
+0:09
20M
20.00 mi12:11:182:08:236:259:10
6:45
+0:11
21M
21.00 mi12:18:152:15:206:276:57
6:57
+0:12
35K
21.75 mi12:22:592:20:046:264:44
6:20
-0:37
23M
23.00 mi12:31:182:28:236:278:19
6:39
+0:19
24M
24.00 mi12:37:422:34:476:276:24
6:24
-0:15
40K
24.85 mi12:43:152:40:206:275:33
6:29
+0:05
25.2M
25.20 mi12:45:422:42:476:282:27
7:06
+0:37
Finish
26.22 mi12:51:582:49:036:276:16
6:09
-0:57

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

6:09 /mi

Average Pace

6:27 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:39

94% of race

Time at Steady Pace

9:24

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:22:2019:256:1519:25
6:15
#2137
10K
6.21 mi10:42:0439:096:1819:44
6:21
#2410
15K
9.32 mi11:01:5559:006:2019:51
6:23
#2567
20K
12.43 mi11:21:541:18:596:2119:59
6:26
#2586
Half
13.11 mi11:26:101:23:156:214:16
6:15
#2557
25K
15.53 mi11:41:431:38:486:2215:33
6:25
#2516
30K
18.64 mi12:02:081:59:136:2420:25
6:34
#2421
20M
20.00 mi12:11:182:08:236:259:10
6:45
#2416
21M
21.00 mi12:18:152:15:206:276:57
6:57
#2347
35K
21.75 mi12:22:592:20:046:264:44
6:20
#2314
23M
23.00 mi12:31:182:28:236:278:19
6:39
#2267
24M
24.00 mi12:37:422:34:476:276:24
6:24
#2208
40K
24.85 mi12:43:152:40:206:275:33
6:29
#2155
25.2M
25.20 mi12:45:422:42:476:282:27
7:06
#2132
Finish
26.22 mi12:51:582:49:036:276:16
6:09
#2089
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2137203820382851(Top 10%)2716(Top 17%)2716(Top 48%)
10K6.21 mi3.10 mi2410-2732297-2592297-2592740(Top 10%)2610(Top 16%)2610(Top 46%)
15K9.32 mi3.11 mi2567-1572447-1502447-1502851(Top 10%)2716(Top 17%)2716(Top 48%)
20K12.43 mi3.11 mi2586-192467-202467-202694(Top 9%)2564(Top 16%)2564(Top 45%)
Half13.11 mi0.68 mi2557+292443+242443+242219(Top 8%)2120(Top 13%)2120(Top 38%)
25K15.53 mi2.42 mi2516+412401+422401+422428(Top 9%)2308(Top 14%)2308(Top 41%)
30K18.64 mi3.11 mi2421+952309+922309+922267(Top 8%)2146(Top 13%)2146(Top 38%)
20M20.00 mi1.36 mi2416+52304+52304+52654(Top 9%)2488(Top 15%)2488(Top 44%)
21M21.00 mi1.00 mi2347+692236+682236+682042(Top 7%)1917(Top 12%)1917(Top 34%)
35K21.75 mi0.75 mi2314+332204+322204+321715(Top 6%)1609(Top 10%)1609(Top 29%)
23M23.00 mi1.25 mi2267+472159+452159+451989(Top 7%)1859(Top 12%)1859(Top 33%)
24M24.00 mi1.00 mi2208+592101+582101+581648(Top 6%)1535(Top 10%)1535(Top 27%)
40K24.85 mi0.85 mi2155+532047+542047+541562(Top 5%)1446(Top 9%)1446(Top 26%)
25.2M25.20 mi0.35 mi2132+232024+232024+231781(Top 6%)1620(Top 10%)1620(Top 29%)
Finish26.22 mi1.02 mi2089+431982+421982+421347(Top 5%)1254(Top 8%)1254(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2851

Males

2716

M18-39

2716

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2740

Males

2610

M18-39

2610

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2851

Males

2716

M18-39

2716

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2694

Males

2564

M18-39

2564

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2219

Males

2120

M18-39

2120

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2428

Males

2308

M18-39

2308

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2267

Males

2146

M18-39

2146

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2654

Males

2488

M18-39

2488

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

2042

Males

1917

M18-39

1917

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1715

Males

1609

M18-39

1609

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1989

Males

1859

M18-39

1859

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1648

Males

1535

M18-39

1535

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1562

Males

1446

M18-39

1446

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1781

Males

1620

M18-39

1620

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1347

Males

1254

M18-39

1254

Passing Analysis

Category:
Athletes Passed
822
Passed By
774
Net Change
+48
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2137
5K → 10K28301-273#2137#2410
10K → 15K33190-157#2410#2567
15K → 20K6887-19#2567#2586
20K → Half334+29#2586#2557
Half → 25K7736+41#2557#2516
25K → 30K14449+95#2516#2421
30K → 20M4540+5#2421#2416
20M → 21M745+69#2416#2347
21M → 35K396+33#2347#2314
35K → 23M6518+47#2314#2267
23M → 24M7314+59#2267#2208
24M → 40K629+53#2208#2155
40K → 25.2M307+23#2155#2132
25.2M → Finish518+43#2132#2089
TOTALS822774+48
📊

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