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BOSTON MARATHON 2025

Zhao Xia

Bib: 4907•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 21%
Division (M18-39)
#0 / 5642
Top 45%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:34
Rank: #4773
Start → 5K
20:34 | 6:37/mi
10K· 6.21 mi
41:09
Rank: #4683 (+90)
5K → 10K
20:35 | 6:38/mi
15K· 9.32 mi
1:01:42
Rank: #4544 (+139)
10K → 15K
20:33 | 6:37/mi
20K· 12.43 mi
1:22:16
Rank: #4329 (+215)
15K → 20K
20:34 | 6:37/mi
Half· 13.11 mi
1:26:38
Rank: #4235 (+94)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:42:47
Rank: #4121 (+114)
Half → 25K
16:09 | 6:40/mi
30K· 18.64 mi
2:03:51
Rank: #3916 (+205)
25K → 30K
21:04 | 6:47/mi
20M
2:13:17
Rank: #3869 (+47)
30K → 20M
9:26 | 6:57/mi
21M
2:20:41
Rank: #3843 (+26)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:25:46
Rank: #3843
21M → 35K
5:05 | 6:48/mi
23M
2:34:36
Rank: #3819 (+24)
35K → 23M
8:50 | 7:03/mi
24M
2:41:24
Rank: #3785 (+34)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:47:17
Rank: #3739 (+46)
24M → 40K
5:53 | 6:53/mi
25.2M
2:49:53
Rank: #3718 (+21)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:56:25
Rank: #3597 (+121)
25.2M → Finish
6:32 | 6:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:38
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:29:47
Pace6:51 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1020:346:3720:34
6:37
-
10K
6.21 mi10:44:4541:096:3720:35
6:38
+0:01
15K
9.32 mi11:05:181:01:426:3720:33
6:37
-0:01
20K
12.43 mi11:25:521:22:166:3720:34
6:37
0:00
Half
13.11 mi11:30:141:26:386:374:22
6:24
-0:13
25K
15.53 mi11:46:231:42:476:3716:09
6:40
+0:16
30K
18.64 mi12:07:272:03:516:3921:04
6:47
+0:07
20M
20.00 mi12:16:532:13:176:409:26
6:57
+0:10
21M
21.00 mi12:24:172:20:416:427:24
7:24
+0:27
35K
21.75 mi12:29:222:25:466:425:05
6:48
-0:36
23M
23.00 mi12:38:122:34:366:438:50
7:03
+0:15
24M
24.00 mi12:45:002:41:246:446:48
6:48
-0:15
40K
24.85 mi12:50:532:47:176:445:53
6:53
+0:05
25.2M
25.20 mi12:53:292:49:536:442:36
7:32
+0:39
Finish
26.22 mi13:00:012:56:256:446:32
6:25
-1:07

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

6:24 /mi

Average Pace

6:44 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:35

89% of race

Time at Steady Pace

18:50

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:44 /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 mi10:24:1020:346:3720:34
6:37
#4773
10K
6.21 mi10:44:4541:096:3720:35
6:38
#4683
15K
9.32 mi11:05:181:01:426:3720:33
6:37
#4544
20K
12.43 mi11:25:521:22:166:3720:34
6:37
#4329
Half
13.11 mi11:30:141:26:386:374:22
6:24
#4235
25K
15.53 mi11:46:231:42:476:3716:09
6:40
#4121
30K
18.64 mi12:07:272:03:516:3921:04
6:47
#3916
20M
20.00 mi12:16:532:13:176:409:26
6:57
#3869
21M
21.00 mi12:24:172:20:416:427:24
7:24
#3843
35K
21.75 mi12:29:222:25:466:425:05
6:48
#3843
23M
23.00 mi12:38:122:34:366:438:50
7:03
#3819
24M
24.00 mi12:45:002:41:246:446:48
6:48
#3785
40K
24.85 mi12:50:532:47:176:445:53
6:53
#3739
25.2M
25.20 mi12:53:292:49:536:442:36
7:32
#3718
Finish
26.22 mi13:00:012:56:256:446:32
6:25
#3597
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4773447444744355(Top 15%)4089(Top 25%)4089(Top 72%)
10K6.21 mi3.10 mi4683+904389+854389+854665(Top 16%)4367(Top 27%)4367(Top 77%)
15K9.32 mi3.11 mi4544+1394267+1224267+1224355(Top 15%)4089(Top 25%)4089(Top 72%)
20K12.43 mi3.11 mi4329+2154067+2004067+2003836(Top 14%)3618(Top 22%)3618(Top 64%)
Half13.11 mi0.68 mi4235+943982+853982+853099(Top 11%)2960(Top 18%)2960(Top 52%)
25K15.53 mi2.42 mi4121+1143873+1093873+1093873(Top 14%)3628(Top 23%)3628(Top 64%)
30K18.64 mi3.11 mi3916+2053684+1893684+1893333(Top 12%)3116(Top 19%)3116(Top 55%)
20M20.00 mi1.36 mi3869+473637+473637+473777(Top 13%)3476(Top 22%)3476(Top 62%)
21M21.00 mi1.00 mi3843+263610+273610+274119(Top 15%)3717(Top 23%)3717(Top 66%)
35K21.75 mi0.75 mi38433603+73603+74106(Top 14%)3681(Top 23%)3681(Top 65%)
23M23.00 mi1.25 mi3819+243571+323571+324086(Top 14%)3645(Top 23%)3645(Top 65%)
24M24.00 mi1.00 mi3785+343535+363535+363529(Top 12%)3164(Top 20%)3164(Top 56%)
40K24.85 mi0.85 mi3739+463488+473488+473282(Top 12%)2934(Top 18%)2934(Top 52%)
25.2M25.20 mi0.35 mi3718+213464+243464+243604(Top 13%)3148(Top 20%)3148(Top 56%)
Finish26.22 mi1.02 mi3597+1213353+1113353+1112387(Top 8%)2179(Top 14%)2179(Top 39%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4355

Males

4089

M18-39

4089

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4665

Males

4367

M18-39

4367

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4355

Males

4089

M18-39

4089

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3836

Males

3618

M18-39

3618

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3099

Males

2960

M18-39

2960

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3873

Males

3628

M18-39

3628

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3333

Males

3116

M18-39

3116

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3777

Males

3476

M18-39

3476

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4119

Males

3717

M18-39

3717

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

4106

Males

3681

M18-39

3681

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

4086

Males

3645

M18-39

3645

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3529

Males

3164

M18-39

3164

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3282

Males

2934

M18-39

2934

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3604

Males

3148

M18-39

3148

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2387

Males

2179

M18-39

2179

Passing Analysis

Category:
Athletes Passed
1667
Passed By
491
Net Change
+1176
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4773
5K → 10K215125+90#4773#4683
10K → 15K18849+139#4683#4544
15K → 20K23621+215#4544#4329
20K → Half951+94#4329#4235
Half → 25K15036+114#4235#4121
25K → 30K23934+205#4121#3916
30K → 20M7427+47#3916#3869
20M → 21M7347+26#3869#3843
21M → 35K32320#3843#3843
35K → 23M7450+24#3843#3819
23M → 24M6632+34#3819#3785
24M → 40K6418+46#3785#3739
40K → 25.2M3514+21#3739#3718
25.2M → Finish1265+121#3718#3597
TOTALS1667491+1176
📊

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