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BOSTON MARATHON 2025

Jennifer Stefanik

Bib: 26121•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
11:15/mi
34:58
↑ 97↓ 3451.5%
10K· 6.21 mi
11:48/mi
1:11:39
↑ 79↓ 1380.4%
15K· 9.32 mi
13:10/mi
1:52:34
↑ 67↓ 78
20K· 12.43 mi
13:20/mi
2:33:58
↑ 106↓ 860.1%
Half· 13.11 mi
12:32/mi
2:42:31
↑ 19↓ 370.5%
25K· 15.53 mi
13:21/mi
3:14:53
↑ 66↓ 880.2%
30K· 18.64 mi
14:18/mi
3:59:20
↑ 181↓ 1480.2%
20M
14:17/mi
4:18:45
↑ 64↓ 500.2%
21M
15:34/mi
4:34:19
↑ 106↓ 241.6%
35K· 21.75 mi
12:34/mi
4:43:43
↑ 17↓ 861.7%
23M
13:11/mi
5:00:14
↑ 23↓ 630.6%
24M
13:02/mi
5:13:16
↓ 821.3%
40K· 24.85 mi
13:24/mi
5:24:43
↓ 200.3%
25.2M
15:19/mi
5:30:00
↑ 13↓ 160.2%
Finish· 26.22 mi
12:50/mi
5:43:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:42:31
Pace12:24 /mi
2nd Half
Distance13.11 mi
Time3:00:34
Pace13:46 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:2234:5811:1534:58
11:15
-
10K
6.21 mi12:27:031:11:3911:3236:41
11:48
+0:33
15K
9.32 mi13:07:581:52:3412:0540:55
13:10
+1:22
20K
12.43 mi13:49:222:33:5812:2341:24
13:20
+0:10
Half
13.11 mi13:57:552:42:3112:248:33
12:32
-0:48
25K
15.53 mi14:30:173:14:5312:3332:22
13:21
+0:49
30K
18.64 mi15:14:443:59:2012:5044:27
14:18
+0:57
20M
20.00 mi15:34:094:18:4512:5619:25
14:17
-0:01
21M
21.00 mi15:49:434:34:1913:0415:34
15:34
+1:17
35K
21.75 mi15:59:074:43:4313:039:24
12:34
-3:00
23M
23.00 mi16:15:385:00:1413:0316:31
13:11
+0:37
24M
24.00 mi16:28:405:13:1613:0313:02
13:02
-0:09
40K
24.85 mi16:40:075:24:4313:0411:27
13:24
+0:22
25.2M
25.20 mi16:45:245:30:0013:065:17
15:19
+1:55
Finish
26.22 mi16:58:295:43:0513:0613:05
12:50
-2:29

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

11:15 /mi

Average Pace

13:06 /mi

Slowest Pace

15:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:36

26% of race

Time at Steady Pace

2:48:46

49% of race

Time at Slower Pace

1:24:43

25% of race

Average Pace: 13:05 /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 mi11:50:2234:5811:1534:58
11:15
#27810
10K
6.21 mi12:27:031:11:3911:3236:41
11:48
#27846
15K
9.32 mi13:07:581:52:3412:0540:55
13:10
#28036
20K
12.43 mi13:49:222:33:5812:2341:24
13:20
#28044
Half
13.11 mi13:57:552:42:3112:248:33
12:32
#28037
25K
15.53 mi14:30:173:14:5312:3332:22
13:21
#27975
30K
18.64 mi15:14:443:59:2012:5044:27
14:18
#27959
20M
20.00 mi15:34:094:18:4512:5619:25
14:17
#27956
21M
21.00 mi15:49:434:34:1913:0415:34
15:34
#27955
35K
21.75 mi15:59:074:43:4313:039:24
12:34
#27931
23M
23.00 mi16:15:385:00:1413:0316:31
13:11
#27869
24M
24.00 mi16:28:405:13:1613:0313:02
13:02
#27848
40K
24.85 mi16:40:075:24:4313:0411:27
13:24
#27807
25.2M
25.20 mi16:45:245:30:0013:065:17
15:19
#27810
Finish
26.22 mi16:58:295:43:0513:0613:05
12:50
#27813
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi27810118381183828223(Top 99%)12125(Top 99%)12125(Top 669%)
10K6.21 mi3.10 mi27846-3611857-1911857-1927835(Top 98%)11862(Top 97%)11862(Top 654%)
15K9.32 mi3.11 mi28036-19011990-13311990-13328223(Top 99%)12125(Top 99%)12125(Top 669%)
20K12.43 mi3.11 mi28044-812003-1312003-1327989(Top 99%)11990(Top 98%)11990(Top 661%)
Half13.11 mi0.68 mi28037+712001+212001+227774(Top 98%)11872(Top 97%)11872(Top 655%)
25K15.53 mi2.42 mi27975+6211962+3911962+3927534(Top 97%)11737(Top 96%)11737(Top 647%)
30K18.64 mi3.11 mi27959+1611963-111963-127720(Top 98%)11904(Top 97%)11904(Top 657%)
20M20.00 mi1.36 mi27956+311970-711970-727492(Top 97%)11817(Top 97%)11817(Top 652%)
21M21.00 mi1.00 mi27955+111972-211972-227577(Top 97%)11848(Top 97%)11848(Top 654%)
35K21.75 mi0.75 mi27931+2411959+1311959+1326525(Top 93%)11350(Top 93%)11350(Top 626%)
23M23.00 mi1.25 mi27869+6211934+2511934+2526603(Top 94%)11406(Top 93%)11406(Top 629%)
24M24.00 mi1.00 mi27848+2111925+911925+926889(Top 95%)11583(Top 95%)11583(Top 639%)
40K24.85 mi0.85 mi27807+4111910+1511910+1526668(Top 94%)11483(Top 94%)11483(Top 633%)
25.2M25.20 mi0.35 mi27810-311912-211912-227332(Top 96%)11819(Top 97%)11819(Top 652%)
Finish26.22 mi1.02 mi27813-311922-1011922-1027523(Top 97%)11879(Top 97%)11879(Top 655%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21story building
+97ft-345ft

Overall

28223

Females

12125

F45-49

12125

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

27835

Females

11862

F45-49

11862

10K→15K

6.2 - 9.3 mi

Top 99%
×3story building
+67ft-78ft

Overall

28223

Females

12125

F45-49

12125

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

27989

Females

11990

F45-49

11990

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

27774

Females

11872

F45-49

11872

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

27534

Females

11737

F45-49

11737

25K→30K

15.5 - 18.6 mi

Top 98%
×9story building
+181ft-148ft

Overall

27720

Females

11904

F45-49

11904

30K→20M

18.6 - 20.0 mi

Top 97%
×5story building
+64ft-50ft

Overall

27492

Females

11817

F45-49

11817

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

27577

Females

11848

F45-49

11848

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

26525

Females

11350

F45-49

11350

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

26603

Females

11406

F45-49

11406

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

26889

Females

11583

F45-49

11583

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

26668

Females

11483

F45-49

11483

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

27332

Females

11819

F45-49

11819

25.2M→Finish

25.2 - 26.2 mi

Top 97%
×2story building
+22ft-21ft

Overall

27523

Females

11879

F45-49

11879

Passing Analysis

Category:
Athletes Passed
471
Passed By
474
Net Change
-3
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27810
5K → 10K73109-36#27810#27846
10K → 15K12202-190#27846#28036
15K → 20K2937-8#28036#28044
20K → Half147+7#28044#28037
Half → 25K7816+62#28037#27975
25K → 30K5337+16#27975#27959
30K → 20M2320+3#27959#27956
20M → 21M1514+1#27956#27955
21M → 35K251+24#27955#27931
35K → 23M631+62#27931#27869
23M → 24M243+21#27869#27848
24M → 40K410+41#27848#27807
40K → 25.2M58-3#27807#27810
25.2M → Finish1619-3#27810#27813
TOTALS471474-3
📊

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