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BOSTON MARATHON 2025

Stefanie Shimansky

Bib: 10738•F

FL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 29%
Gender (Female)
#0 / 12228
Top 12%
Division (F18-39)
#0 / 5469
Top 22%
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
7:04/mi
21:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:08/mi
44:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:14/mi
1:06:36
↑ 67↓ 78
20K· 12.43 mi
7:15/mi
1:29:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:34:02
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:51:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:36/mi
2:15:25
↑ 181↓ 1480.2%
20M
7:33/mi
2:25:40
↑ 64↓ 500.2%
21M
8:12/mi
2:33:52
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:39:34
↑ 17↓ 861.7%
23M
7:52/mi
2:49:25
↑ 23↓ 630.6%
24M
7:45/mi
2:57:10
↓ 821.3%
40K· 24.85 mi
7:44/mi
3:03:47
↓ 200.3%
25.2M
8:25/mi
3:06:41
↑ 13↓ 160.2%
Finish· 26.22 mi
7:24/mi
3:14:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:02
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:40:11
Pace7:39 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5621:577:0421:57
7:04
-
10K
6.21 mi11:11:0644:077:0622:10
7:08
+0:04
15K
9.32 mi11:33:351:06:367:0922:29
7:14
+0:06
20K
12.43 mi11:56:081:29:097:1022:33
7:15
+0:01
Half
13.11 mi12:01:011:34:027:104:53
7:09
-0:06
25K
15.53 mi12:18:481:51:497:1217:47
7:20
+0:11
30K
18.64 mi12:42:242:15:257:1623:36
7:36
+0:16
20M
20.00 mi12:52:392:25:407:1710:15
7:33
-0:03
21M
21.00 mi13:00:512:33:527:208:12
8:12
+0:39
35K
21.75 mi13:06:332:39:347:205:42
7:37
-0:35
23M
23.00 mi13:16:242:49:257:229:51
7:52
+0:15
24M
24.00 mi13:24:092:57:107:237:45
7:45
-0:07
40K
24.85 mi13:30:463:03:477:246:37
7:44
-0:01
25.2M
25.20 mi13:33:403:06:417:242:54
8:25
+0:41
Finish
26.22 mi13:41:123:14:137:257:32
7:24
-1:01

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

7:04 /mi

Average Pace

7:25 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:16

89% of race

Time at Steady Pace

18:03

9% of race

Time at Slower Pace

2:54

1% of race

Average Pace: 7:24 /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 mi10:48:5621:577:0421:57
7:04
#8362
10K
6.21 mi11:11:0644:077:0622:10
7:08
#8645
15K
9.32 mi11:33:351:06:367:0922:29
7:14
#8888
20K
12.43 mi11:56:081:29:097:1022:33
7:15
#8759
Half
13.11 mi12:01:011:34:027:104:53
7:09
#8737
25K
15.53 mi12:18:481:51:497:1217:47
7:20
#8662
30K
18.64 mi12:42:242:15:257:1623:36
7:36
#8549
20M
20.00 mi12:52:392:25:407:1710:15
7:33
#8409
21M
21.00 mi13:00:512:33:527:208:12
8:12
#8359
35K
21.75 mi13:06:332:39:347:205:42
7:37
#8370
23M
23.00 mi13:16:242:49:257:229:51
7:52
#8345
24M
24.00 mi13:24:092:57:107:237:45
7:45
#8343
40K
24.85 mi13:30:463:03:477:246:37
7:44
#8311
25.2M
25.20 mi13:33:403:06:417:242:54
8:25
#8295
Finish
26.22 mi13:41:123:14:137:257:32
7:24
#8296
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8362111911199447(Top 33%)1627(Top 13%)1627(Top 30%)
10K6.21 mi3.10 mi8645-2831239-1201239-1208970(Top 32%)1363(Top 11%)1363(Top 25%)
15K9.32 mi3.11 mi8888-2431348-1091348-1099447(Top 33%)1627(Top 13%)1627(Top 30%)
20K12.43 mi3.11 mi8759+1291322+261322+268702(Top 31%)1399(Top 11%)1399(Top 26%)
Half13.11 mi0.68 mi8737+221320+21320+28793(Top 31%)1405(Top 11%)1405(Top 26%)
25K15.53 mi2.42 mi8662+751303+171303+178649(Top 30%)1487(Top 12%)1487(Top 27%)
30K18.64 mi3.11 mi8549+1131321-181321-188430(Top 30%)1569(Top 13%)1569(Top 29%)
20M20.00 mi1.36 mi8409+1401297+241297+247343(Top 26%)1289(Top 11%)1289(Top 24%)
21M21.00 mi1.00 mi8359+501313-161313-168607(Top 30%)1981(Top 16%)1981(Top 36%)
35K21.75 mi0.75 mi8370-111339-261339-269485(Top 33%)2340(Top 19%)2340(Top 43%)
23M23.00 mi1.25 mi8345+251372-331372-339062(Top 32%)2279(Top 19%)2279(Top 42%)
24M24.00 mi1.00 mi8343+21400-281400-289465(Top 33%)2542(Top 21%)2542(Top 46%)
40K24.85 mi0.85 mi8311+321426-261426-268369(Top 29%)2152(Top 18%)2152(Top 39%)
25.2M25.20 mi0.35 mi8295+161437-111437-118297(Top 29%)2177(Top 18%)2177(Top 40%)
Finish26.22 mi1.02 mi8296-11473-361473-368431(Top 30%)2242(Top 18%)2242(Top 41%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9447

Females

1627

F18-39

1627

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8970

Females

1363

F18-39

1363

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9447

Females

1627

F18-39

1627

15K→20K

9.3 - 12.4 mi

Top 31%
×5story building
+106ft-86ft

Overall

8702

Females

1399

F18-39

1399

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8793

Females

1405

F18-39

1405

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

8649

Females

1487

F18-39

1487

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8430

Females

1569

F18-39

1569

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7343

Females

1289

F18-39

1289

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8607

Females

1981

F18-39

1981

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9485

Females

2340

F18-39

2340

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

9062

Females

2279

F18-39

2279

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

9465

Females

2542

F18-39

2542

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8369

Females

2152

F18-39

2152

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8297

Females

2177

F18-39

2177

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8431

Females

2242

F18-39

2242

Passing Analysis

Category:
Athletes Passed
1643
Passed By
1577
Net Change
+66
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8362
5K → 10K104387-283#8362#8645
10K → 15K91334-243#8645#8888
15K → 20K22899+129#8888#8759
20K → Half4220+22#8759#8737
Half → 25K175100+75#8737#8662
25K → 30K264151+113#8662#8549
30K → 20M17131+140#8549#8409
20M → 21M11464+50#8409#8359
21M → 35K6172-11#8359#8370
35K → 23M12095+25#8370#8345
23M → 24M7674+2#8345#8343
24M → 40K8957+32#8343#8311
40K → 25.2M3822+16#8311#8295
25.2M → Finish7071-1#8295#8296
TOTALS16431577+66
📊

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