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BOSTON MARATHON 2025

Xilin Jiang

Bib: 4534•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 28%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:58
Rank: #3303
Start → 5K
19:58 | 6:26/mi
10K· 6.21 mi
40:11
Rank: #3532 (-229)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:01:10
Rank: #4111 (-579)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:21:47
Rank: #4015 (+96)
15K → 20K
20:37 | 6:38/mi
Half· 13.11 mi
1:26:16
Rank: #4021 (-6)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:42:34
Rank: #4005 (+16)
Half → 25K
16:18 | 6:43/mi
30K· 18.64 mi
2:04:11
Rank: #4017 (-12)
25K → 30K
21:37 | 6:57/mi
20M
2:13:59
Rank: #4101 (-84)
30K → 20M
9:48 | 7:13/mi
21M
2:21:36
Rank: #4156 (-55)
20M → 21M
7:37 | 7:37/mi
35K· 21.75 mi
2:27:25
Rank: #4389 (-233)
21M → 35K
5:49 | 7:46/mi
23M
2:36:43
Rank: #4485 (-96)
35K → 23M
9:18 | 7:26/mi
24M
2:44:15
Rank: #4661 (-176)
23M → 24M
7:32 | 7:32/mi
40K· 24.85 mi
2:50:55
Rank: #4843 (-182)
24M → 40K
6:40 | 7:48/mi
25.2M
2:53:48
Rank: #4892 (-49)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:01:18
Rank: #4978 (-86)
25.2M → Finish
7:30 | 7:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:16
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:35:02
Pace7:15 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3319:586:2619:58
6:26
-
10K
6.21 mi10:43:4640:116:2820:13
6:30
+0:04
15K
9.32 mi11:04:451:01:106:3420:59
6:45
+0:15
20K
12.43 mi11:25:221:21:476:3520:37
6:38
-0:07
Half
13.11 mi11:29:511:26:166:354:29
6:34
-0:04
25K
15.53 mi11:46:091:42:346:3616:18
6:43
+0:09
30K
18.64 mi12:07:462:04:116:4021:37
6:57
+0:14
20M
20.00 mi12:17:342:13:596:429:48
7:13
+0:16
21M
21.00 mi12:25:112:21:366:457:37
7:37
+0:24
35K
21.75 mi12:31:002:27:256:475:49
7:46
+0:09
23M
23.00 mi12:40:182:36:436:499:18
7:26
-0:20
24M
24.00 mi12:47:502:44:156:517:32
7:32
+0:06
40K
24.85 mi12:54:302:50:556:536:40
7:48
+0:16
25.2M
25.20 mi12:57:232:53:486:542:53
8:22
+0:34
Finish
26.22 mi13:04:533:01:186:557:30
7:22
-1:00

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

6:26 /mi

Average Pace

6:55 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:34

57% of race

Time at Steady Pace

48:13

27% of race

Time at Slower Pace

30:31

17% of race

Average Pace: 6:55 /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 mi10:23:3319:586:2619:58
6:26
#3303
10K
6.21 mi10:43:4640:116:2820:13
6:30
#3532
15K
9.32 mi11:04:451:01:106:3420:59
6:45
#4111
20K
12.43 mi11:25:221:21:476:3520:37
6:38
#4015
Half
13.11 mi11:29:511:26:166:354:29
6:34
#4021
25K
15.53 mi11:46:091:42:346:3616:18
6:43
#4005
30K
18.64 mi12:07:462:04:116:4021:37
6:57
#4017
20M
20.00 mi12:17:342:13:596:429:48
7:13
#4101
21M
21.00 mi12:25:112:21:366:457:37
7:37
#4156
35K
21.75 mi12:31:002:27:256:475:49
7:46
#4389
23M
23.00 mi12:40:182:36:436:499:18
7:26
#4485
24M
24.00 mi12:47:502:44:156:517:32
7:32
#4661
40K
24.85 mi12:54:302:50:556:536:40
7:48
#4843
25.2M
25.20 mi12:57:232:53:486:542:53
8:22
#4892
Finish
26.22 mi13:04:533:01:186:557:30
7:22
#4978
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3303313631365621(Top 20%)5138(Top 32%)5138(Top 91%)
10K6.21 mi3.10 mi3532-2293351-2153351-2153776(Top 13%)3561(Top 22%)3561(Top 63%)
15K9.32 mi3.11 mi4111-5793874-5233874-5235621(Top 20%)5138(Top 32%)5138(Top 91%)
20K12.43 mi3.11 mi4015+963780+943780+943926(Top 14%)3697(Top 23%)3697(Top 66%)
Half13.11 mi0.68 mi4021-63785-53785-54159(Top 15%)3898(Top 24%)3898(Top 69%)
25K15.53 mi2.42 mi4005+163768+173768+174294(Top 15%)3982(Top 25%)3982(Top 71%)
30K18.64 mi3.11 mi4017-123773-53773-54427(Top 16%)4050(Top 25%)4050(Top 72%)
20M20.00 mi1.36 mi4101-843839-663839-665234(Top 18%)4651(Top 29%)4651(Top 82%)
21M21.00 mi1.00 mi4156-553883-443883-445190(Top 18%)4511(Top 28%)4511(Top 80%)
35K21.75 mi0.75 mi4389-2334072-1894072-18910555(Top 37%)7624(Top 47%)7624(Top 135%)
23M23.00 mi1.25 mi4485-964144-724144-726176(Top 22%)5069(Top 31%)5069(Top 90%)
24M24.00 mi1.00 mi4661-1764286-1424286-1427892(Top 28%)6036(Top 37%)6036(Top 107%)
40K24.85 mi0.85 mi4843-1824438-1524438-1528673(Top 31%)6330(Top 39%)6330(Top 112%)
25.2M25.20 mi0.35 mi4892-494470-324470-327864(Top 28%)5805(Top 36%)5805(Top 103%)
Finish26.22 mi1.02 mi4978-864527-574527-578142(Top 29%)5975(Top 37%)5975(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5621

Males

5138

M18-39

5138

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3776

Males

3561

M18-39

3561

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5621

Males

5138

M18-39

5138

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3926

Males

3697

M18-39

3697

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4159

Males

3898

M18-39

3898

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4294

Males

3982

M18-39

3982

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4427

Males

4050

M18-39

4050

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

5234

Males

4651

M18-39

4651

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5190

Males

4511

M18-39

4511

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

10555

Males

7624

M18-39

7624

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6176

Males

5069

M18-39

5069

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7892

Males

6036

M18-39

6036

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8673

Males

6330

M18-39

6330

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7864

Males

5805

M18-39

5805

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8142

Males

5975

M18-39

5975

Passing Analysis

Category:
Athletes Passed
666
Passed By
2341
Net Change
-1675
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3303
5K → 10K51280-229#3303#3532
10K → 15K11590-579#3532#4111
15K → 20K15357+96#4111#4015
20K → Half1319-6#4015#4021
Half → 25K8872+16#4021#4005
25K → 30K126138-12#4005#4017
30K → 20M40124-84#4017#4101
20M → 21M45100-55#4101#4156
21M → 35K8241-233#4156#4389
35K → 23M48144-96#4389#4485
23M → 24M29205-176#4485#4661
24M → 40K20202-182#4661#4843
40K → 25.2M1564-49#4843#4892
25.2M → Finish19105-86#4892#4978
TOTALS6662341-1675
📊

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