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BOSTON MARATHON 2025

Yin Xi Sun

Bib: 19146•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 50%
Division (M60-64)
#0 / 1259
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:54/mi
24:33
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
49:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:08/mi
1:15:07
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:41:03
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:46:22
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
2:05:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:10/mi
2:30:59
↑ 181↓ 1480.2%
20M
7:56/mi
2:41:46
↑ 64↓ 500.2%
21M
8:28/mi
2:50:14
↑ 106↓ 241.6%
35K· 21.75 mi
7:33/mi
2:55:53
↑ 17↓ 861.7%
23M
7:49/mi
3:05:40
↑ 23↓ 630.6%
24M
7:31/mi
3:13:11
↓ 821.3%
40K· 24.85 mi
7:40/mi
3:19:44
↓ 200.3%
25.2M
8:39/mi
3:22:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:26/mi
3:30:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:46:22
Pace8:07 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:43:55
Pace7:56 /mi
📊Negative Split: 2.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1924:337:5424:33
7:54
-
10K
6.21 mi11:42:3849:528:0225:19
8:09
+0:15
15K
9.32 mi12:07:531:15:078:0425:15
8:08
-0:01
20K
12.43 mi12:33:491:41:038:0825:56
8:21
+0:13
Half
13.11 mi12:39:081:46:228:075:19
7:48
-0:33
25K
15.53 mi12:58:242:05:388:0519:16
7:57
+0:09
30K
18.64 mi13:23:452:30:598:0625:21
8:10
+0:13
20M
20.00 mi13:34:322:41:468:0510:47
7:56
-0:14
21M
21.00 mi13:43:002:50:148:068:28
8:28
+0:32
35K
21.75 mi13:48:392:55:538:055:39
7:33
-0:55
23M
23.00 mi13:58:263:05:408:049:47
7:49
+0:16
24M
24.00 mi14:05:573:13:118:037:31
7:31
-0:18
40K
24.85 mi14:12:303:19:448:026:33
7:40
+0:09
25.2M
25.20 mi14:15:293:22:438:032:59
8:39
+0:59
Finish
26.22 mi14:23:033:30:178:027:34
7:26
-1:13

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

7:26 /mi

Average Pace

8:02 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:54

82% of race

Time at Steady Pace

37:23

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:01 /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 mi11:17:1924:337:5424:33
7:54
#15687
10K
6.21 mi11:42:3849:528:0225:19
8:09
#16711
15K
9.32 mi12:07:531:15:078:0425:15
8:08
#16771
20K
12.43 mi12:33:491:41:038:0825:56
8:21
#16901
Half
13.11 mi12:39:081:46:228:075:19
7:48
#16755
25K
15.53 mi12:58:242:05:388:0519:16
7:57
#16220
30K
18.64 mi13:23:452:30:598:0625:21
8:10
#15499
20M
20.00 mi13:34:322:41:468:0510:47
7:56
#15046
21M
21.00 mi13:43:002:50:148:068:28
8:28
#14712
35K
21.75 mi13:48:392:55:538:055:39
7:33
#14482
23M
23.00 mi13:58:263:05:408:049:47
7:49
#14119
24M
24.00 mi14:05:573:13:118:037:31
7:31
#13789
40K
24.85 mi14:12:303:19:448:026:33
7:40
#13533
25.2M
25.20 mi14:15:293:22:438:032:59
8:39
#13447
Finish
26.22 mi14:23:033:30:178:027:34
7:26
#13286
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15687106901069016915(Top 60%)11180(Top 69%)11180(Top 888%)
10K6.21 mi3.10 mi16711-102411100-41011100-41017519(Top 62%)11456(Top 71%)11456(Top 910%)
15K9.32 mi3.11 mi16771-6011128-2811128-2816915(Top 60%)11180(Top 69%)11180(Top 888%)
20K12.43 mi3.11 mi16901-13011170-4211170-4217193(Top 61%)11259(Top 70%)11259(Top 894%)
Half13.11 mi0.68 mi16755+14611114+5611114+5614147(Top 50%)9959(Top 62%)9959(Top 791%)
25K15.53 mi2.42 mi16220+53510879+23510879+23513471(Top 47%)9511(Top 59%)9511(Top 755%)
30K18.64 mi3.11 mi15499+72110505+37410505+37412516(Top 44%)8911(Top 55%)8911(Top 708%)
20M20.00 mi1.36 mi15046+45310273+23210273+23210011(Top 35%)7557(Top 47%)7557(Top 600%)
21M21.00 mi1.00 mi14712+33410108+16510108+16510243(Top 36%)7493(Top 47%)7493(Top 595%)
35K21.75 mi0.75 mi14482+23010000+10810000+1089020(Top 32%)6882(Top 43%)6882(Top 547%)
23M23.00 mi1.25 mi14119+3639782+2189782+2188690(Top 31%)6556(Top 41%)6556(Top 521%)
24M24.00 mi1.00 mi13789+3309608+1749608+1747835(Top 28%)6029(Top 37%)6029(Top 479%)
40K24.85 mi0.85 mi13533+2569476+1329476+1327835(Top 28%)5910(Top 37%)5910(Top 469%)
25.2M25.20 mi0.35 mi13447+869424+529424+529710(Top 34%)6829(Top 42%)6829(Top 542%)
Finish26.22 mi1.02 mi13286+1619335+899335+898672(Top 31%)6278(Top 39%)6278(Top 499%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16915

Males

11180

M60-64

11180

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17519

Males

11456

M60-64

11456

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16915

Males

11180

M60-64

11180

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17193

Males

11259

M60-64

11259

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14147

Males

9959

M60-64

9959

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13471

Males

9511

M60-64

9511

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12516

Males

8911

M60-64

8911

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

10011

Males

7557

M60-64

7557

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

10243

Males

7493

M60-64

7493

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

9020

Males

6882

M60-64

6882

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8690

Males

6556

M60-64

6556

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7835

Males

6029

M60-64

6029

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7835

Males

5910

M60-64

5910

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9710

Males

6829

M60-64

6829

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8672

Males

6278

M60-64

6278

Passing Analysis

Category:
Athletes Passed
4047
Passed By
1646
Net Change
+2401
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15687
5K → 10K611085-1024#15687#16711
10K → 15K187247-60#16711#16771
15K → 20K154284-130#16771#16901
20K → Half1482+146#16901#16755
Half → 25K5394+535#16755#16220
25K → 30K7254+721#16220#15499
30K → 20M4530+453#15499#15046
20M → 21M3373+334#15046#14712
21M → 35K2311+230#14712#14482
35K → 23M3652+363#14482#14119
23M → 24M3333+330#14119#13789
24M → 40K2560+256#13789#13533
40K → 25.2M915+86#13533#13447
25.2M → Finish1676+161#13447#13286
TOTALS40471646+2401
📊

Passing Visuals

Category:
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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