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BOSTON MARATHON 2025

Junxiao Yi

Bib: 2772•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 25%
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
21:02
Rank: #6089
Start → 5K
21:02 | 6:46/mi
10K· 6.21 mi
41:46
Rank: #5581 (+508)
5K → 10K
20:44 | 6:40/mi
15K· 9.32 mi
1:01:52
Rank: #4692 (+889)
10K → 15K
20:06 | 6:28/mi
20K· 12.43 mi
1:22:41
Rank: #4577 (+115)
15K → 20K
20:49 | 6:42/mi
Half· 13.11 mi
1:27:09
Rank: #4549 (+28)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:43:31
Rank: #4500 (+49)
Half → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:05:12
Rank: #4450 (+50)
25K → 30K
21:41 | 6:59/mi
20M
2:14:48
Rank: #4433 (+17)
30K → 20M
9:36 | 7:04/mi
21M
2:22:05
Rank: #4325 (+108)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:27:05
Rank: #4271 (+54)
21M → 35K
5:00 | 6:41/mi
23M
2:35:45
Rank: #4173 (+98)
35K → 23M
8:40 | 6:55/mi
24M
2:42:38
Rank: #4132 (+41)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
2:48:54
Rank: #4187 (-55)
24M → 40K
6:16 | 7:20/mi
25.2M
2:51:45
Rank: #4241 (-54)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
2:59:09
Rank: #4398 (-157)
25.2M → Finish
7:24 | 7:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:09
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:32:00
Pace7:01 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5421:026:4621:02
6:46
-
10K
6.21 mi10:43:3841:466:4320:44
6:40
-0:06
15K
9.32 mi11:03:441:01:526:3820:06
6:28
-0:12
20K
12.43 mi11:24:331:22:416:3920:49
6:42
+0:14
Half
13.11 mi11:29:011:27:096:394:28
6:33
-0:09
25K
15.53 mi11:45:231:43:316:4016:22
6:45
+0:12
30K
18.64 mi12:07:042:05:126:4321:41
6:59
+0:14
20M
20.00 mi12:16:402:14:486:449:36
7:04
+0:05
21M
21.00 mi12:23:572:22:056:467:17
7:17
+0:13
35K
21.75 mi12:28:572:27:056:465:00
6:41
-0:36
23M
23.00 mi12:37:372:35:456:468:40
6:55
+0:14
24M
24.00 mi12:44:302:42:386:476:53
6:53
-0:02
40K
24.85 mi12:50:462:48:546:486:16
7:20
+0:27
25.2M
25.20 mi12:53:372:51:456:492:51
8:16
+0:56
Finish
26.22 mi13:01:012:59:096:507:24
7:16
-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

6:28 /mi

Average Pace

6:50 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:18

25% of race

Time at Steady Pace

1:50:03

61% of race

Time at Slower Pace

23:48

13% of race

Average Pace: 6:50 /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 mi10:22:5421:026:4621:02
6:46
#6089
10K
6.21 mi10:43:3841:466:4320:44
6:40
#5581
15K
9.32 mi11:03:441:01:526:3820:06
6:28
#4692
20K
12.43 mi11:24:331:22:416:3920:49
6:42
#4577
Half
13.11 mi11:29:011:27:096:394:28
6:33
#4549
25K
15.53 mi11:45:231:43:316:4016:22
6:45
#4500
30K
18.64 mi12:07:042:05:126:4321:41
6:59
#4450
20M
20.00 mi12:16:402:14:486:449:36
7:04
#4433
21M
21.00 mi12:23:572:22:056:467:17
7:17
#4325
35K
21.75 mi12:28:572:27:056:465:00
6:41
#4271
23M
23.00 mi12:37:372:35:456:468:40
6:55
#4173
24M
24.00 mi12:44:302:42:386:476:53
6:53
#4132
40K
24.85 mi12:50:462:48:546:486:16
7:20
#4187
25.2M
25.20 mi12:53:372:51:456:492:51
8:16
#4241
Finish
26.22 mi13:01:012:59:096:507:24
7:16
#4398
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6089558855883386(Top 12%)3213(Top 20%)3213(Top 57%)
10K6.21 mi3.10 mi5581+5085159+4295159+4295100(Top 18%)4752(Top 30%)4752(Top 84%)
15K9.32 mi3.11 mi4692+8894391+7684391+7683386(Top 12%)3213(Top 20%)3213(Top 57%)
20K12.43 mi3.11 mi4577+1154282+1094282+1094450(Top 16%)4154(Top 26%)4154(Top 74%)
Half13.11 mi0.68 mi4549+284257+254257+254045(Top 14%)3809(Top 24%)3809(Top 68%)
25K15.53 mi2.42 mi4500+494210+474210+474502(Top 16%)4162(Top 26%)4162(Top 74%)
30K18.64 mi3.11 mi4450+504154+564154+564577(Top 16%)4178(Top 26%)4178(Top 74%)
20M20.00 mi1.36 mi4433+174130+244130+244486(Top 16%)4084(Top 25%)4084(Top 72%)
21M21.00 mi1.00 mi4325+1084025+1054025+1053567(Top 13%)3266(Top 20%)3266(Top 58%)
35K21.75 mi0.75 mi4271+543971+543971+543443(Top 12%)3142(Top 20%)3142(Top 56%)
23M23.00 mi1.25 mi4173+983876+953876+953356(Top 12%)3054(Top 19%)3054(Top 54%)
24M24.00 mi1.00 mi4132+413834+423834+424000(Top 14%)3539(Top 22%)3539(Top 63%)
40K24.85 mi0.85 mi4187-553868-343868-345796(Top 20%)4729(Top 29%)4729(Top 84%)
25.2M25.20 mi0.35 mi4241-543913-453913-457379(Top 26%)5544(Top 34%)5544(Top 98%)
Finish26.22 mi1.02 mi4398-1574039-1264039-1267465(Top 26%)5598(Top 35%)5598(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3386

Males

3213

M18-39

3213

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5100

Males

4752

M18-39

4752

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3386

Males

3213

M18-39

3213

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4450

Males

4154

M18-39

4154

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

4045

Males

3809

M18-39

3809

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4502

Males

4162

M18-39

4162

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4577

Males

4178

M18-39

4178

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4486

Males

4084

M18-39

4084

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3567

Males

3266

M18-39

3266

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3443

Males

3142

M18-39

3142

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3356

Males

3054

M18-39

3054

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

4000

Males

3539

M18-39

3539

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5796

Males

4729

M18-39

4729

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7379

Males

5544

M18-39

5544

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7465

Males

5598

M18-39

5598

Passing Analysis

Category:
Athletes Passed
2439
Passed By
748
Net Change
+1691
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6089
5K → 10K53729+508#6089#5581
10K → 15K8901+889#5581#4692
15K → 20K17459+115#4692#4577
20K → Half324+28#4577#4549
Half → 25K13283+49#4549#4500
25K → 30K159109+50#4500#4450
30K → 20M8164+17#4450#4433
20M → 21M13022+108#4433#4325
21M → 35K7218+54#4325#4271
35K → 23M12022+98#4271#4173
23M → 24M6726+41#4173#4132
24M → 40K2681-55#4132#4187
40K → 25.2M1165-54#4187#4241
25.2M → Finish8165-157#4241#4398
TOTALS2439748+1691
📊

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