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BOSTON MARATHON 2025

Shengfang Jin

Bib: 22016•F

MA

Masters
Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 26%
Age Group (F55-59)
#0 / 994
Top 10%
Race Day Weather
50°/40°F
broken clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:23
Rank: #17902
Start → 5K
25:23 | 8:10/mi
10K· 6.21 mi
50:12
Rank: #17111 (+791)
5K → 10K
24:49 | 7:59/mi
15K· 9.32 mi
1:15:49
Rank: #17329 (-218)
10K → 15K
25:37 | 8:15/mi
20K· 12.43 mi
1:41:30
Rank: #17137 (+192)
15K → 20K
25:41 | 8:16/mi
Half· 13.11 mi
1:46:56
Rank: #17055 (+82)
20K → Half
5:26 | 7:58/mi
25K· 15.53 mi
2:06:52
Rank: #16754 (+301)
Half → 25K
19:56 | 8:13/mi
30K· 18.64 mi
2:33:09
Rank: #16319 (+435)
25K → 30K
26:17 | 8:28/mi
20M
2:44:50
Rank: #16151 (+168)
30K → 20M
11:41 | 8:36/mi
21M
2:53:51
Rank: #15940 (+211)
20M → 21M
9:01 | 9:01/mi
35K· 21.75 mi
2:59:54
Rank: #15775 (+165)
21M → 35K
6:03 | 8:05/mi
23M
3:10:25
Rank: #15581 (+194)
35K → 23M
10:31 | 8:24/mi
24M
3:18:34
Rank: #15423 (+158)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:25:40
Rank: #15273 (+150)
24M → 40K
7:06 | 8:18/mi
25.2M
3:28:45
Rank: #15212 (+61)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:37:06
Rank: #15156 (+56)
25.2M → Finish
8:21 | 8:12/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:46:56
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:50:10
Pace8:24 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4825:238:1025:23
8:10
-
10K
6.21 mi11:44:3750:128:0524:49
7:59
-0:11
15K
9.32 mi12:10:141:15:498:0825:37
8:15
+0:16
20K
12.43 mi12:35:551:41:308:1025:41
8:16
+0:01
Half
13.11 mi12:41:211:46:568:095:26
7:58
-0:18
25K
15.53 mi13:01:172:06:528:1019:56
8:13
+0:15
30K
18.64 mi13:27:342:33:098:1326:17
8:28
+0:15
20M
20.00 mi13:39:152:44:508:1411:41
8:36
+0:08
21M
21.00 mi13:48:162:53:518:179:01
9:01
+0:25
35K
21.75 mi13:54:192:59:548:166:03
8:05
-0:56
23M
23.00 mi14:04:503:10:258:1710:31
8:24
+0:19
24M
24.00 mi14:12:593:18:348:168:09
8:09
-0:15
40K
24.85 mi14:20:053:25:408:167:06
8:18
+0:09
25.2M
25.20 mi14:23:103:28:458:173:05
8:56
+0:38
Finish
26.22 mi14:31:313:37:068:178:21
8:12
-0:44

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

7:58 /mi

Average Pace

8:17 /mi

Slowest Pace

9:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:25:00

94% of race

Time at Steady Pace

12:06

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:19:4825:238:1025:23
8:10
#17902
10K
6.21 mi11:44:3750:128:0524:49
7:59
#17111
15K
9.32 mi12:10:141:15:498:0825:37
8:15
#17329
20K
12.43 mi12:35:551:41:308:1025:41
8:16
#17137
Half
13.11 mi12:41:211:46:568:095:26
7:58
#17055
25K
15.53 mi13:01:172:06:528:1019:56
8:13
#16754
30K
18.64 mi13:27:342:33:098:1326:17
8:28
#16319
20M
20.00 mi13:39:152:44:508:1411:41
8:36
#16151
21M
21.00 mi13:48:162:53:518:179:01
9:01
#15940
35K
21.75 mi13:54:192:59:548:166:03
8:05
#15775
23M
23.00 mi14:04:503:10:258:1710:31
8:24
#15581
24M
24.00 mi14:12:593:18:348:168:09
8:09
#15423
40K
24.85 mi14:20:053:25:408:167:06
8:18
#15273
25.2M
25.20 mi14:23:103:28:458:173:05
8:56
#15212
Finish
26.22 mi14:31:313:37:068:178:21
8:12
#15156
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi179026278627817697(Top 62%)6135(Top 50%)6135(Top 617%)
10K6.21 mi3.10 mi17111+7915791+4875791+48716391(Top 58%)5361(Top 44%)5361(Top 539%)
15K9.32 mi3.11 mi17329-2185908-1175908-11717697(Top 62%)6135(Top 50%)6135(Top 617%)
20K12.43 mi3.11 mi17137+1925822+865822+8616744(Top 59%)5628(Top 46%)5628(Top 566%)
Half13.11 mi0.68 mi17055+825777+455777+4515666(Top 55%)4986(Top 41%)4986(Top 502%)
25K15.53 mi2.42 mi16754+3015618+1595618+15915452(Top 54%)4986(Top 41%)4986(Top 502%)
30K18.64 mi3.11 mi16319+4355425+1935425+19314524(Top 51%)4643(Top 38%)4643(Top 467%)
20M20.00 mi1.36 mi16151+1685356+695356+6914439(Top 51%)4749(Top 39%)4749(Top 478%)
21M21.00 mi1.00 mi15940+2115270+865270+8613644(Top 48%)4439(Top 36%)4439(Top 447%)
35K21.75 mi0.75 mi15775+1655198+725198+7212902(Top 45%)4121(Top 34%)4121(Top 415%)
23M23.00 mi1.25 mi15581+1945118+805118+8012724(Top 45%)4122(Top 34%)4122(Top 415%)
24M24.00 mi1.00 mi15423+1585054+645054+6412273(Top 43%)3943(Top 32%)3943(Top 397%)
40K24.85 mi0.85 mi15273+1504999+554999+5512215(Top 43%)4037(Top 33%)4037(Top 406%)
25.2M25.20 mi0.35 mi15212+614979+204979+2011568(Top 41%)3805(Top 31%)3805(Top 383%)
Finish26.22 mi1.02 mi15156+564960+194960+1914252(Top 50%)5076(Top 42%)5076(Top 511%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

17697

Females

6135

F55-59

6135

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

16391

Females

5361

F55-59

5361

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

17697

Females

6135

F55-59

6135

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16744

Females

5628

F55-59

5628

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15666

Females

4986

F55-59

4986

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

15452

Females

4986

F55-59

4986

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14524

Females

4643

F55-59

4643

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

14439

Females

4749

F55-59

4749

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

13644

Females

4439

F55-59

4439

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12902

Females

4121

F55-59

4121

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12724

Females

4122

F55-59

4122

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12273

Females

3943

F55-59

3943

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12215

Females

4037

F55-59

4037

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

11568

Females

3805

F55-59

3805

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

14252

Females

5076

F55-59

5076

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3436
Passed By
690
Net Change
+2746
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17902
5K → 10K84958+791#17902#17111
10K → 15K118336-218#17111#17329
15K → 20K28391+192#17329#17137
20K → Half853+82#17137#17055
Half → 25K32322+301#17055#16754
25K → 30K48348+435#16754#16319
30K → 20M19729+168#16319#16151
20M → 21M22615+211#16151#15940
21M → 35K1694+165#15940#15775
35K → 23M21016+194#15775#15581
23M → 24M1668+158#15581#15423
24M → 40K16212+150#15423#15273
40K → 25.2M687+61#15273#15212
25.2M → Finish9741+56#15212#15156
TOTALS3436690+2746
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing