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BOSTON MARATHON 2025

Jennifer Selig Boerner

Bib: 9403•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 15%
Gender (Female)
#0 / 12228
Top 3%
Masters (Masters Women)
#0 / 6759
Top 0.5%
Division (F40-44)
#0 / 1718
Top 1%
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
6:28/mi
20:05
↑ 97↓ 3451.5%
10K· 6.21 mi
6:22/mi
39:52
↑ 79↓ 1380.4%
15K· 9.32 mi
6:27/mi
59:54
↑ 67↓ 78
20K· 12.43 mi
6:37/mi
1:20:26
↑ 106↓ 860.1%
Half· 13.11 mi
6:27/mi
1:24:50
↑ 19↓ 370.5%
25K· 15.53 mi
6:40/mi
1:41:00
↑ 66↓ 880.2%
30K· 18.64 mi
7:10/mi
2:03:15
↑ 181↓ 1480.2%
20M
7:18/mi
2:13:10
↑ 64↓ 500.2%
21M
7:51/mi
2:21:01
↑ 106↓ 241.6%
35K· 21.75 mi
6:52/mi
2:26:09
↑ 17↓ 861.7%
23M
7:10/mi
2:35:08
↑ 23↓ 630.6%
24M
6:53/mi
2:42:01
↓ 821.3%
40K· 24.85 mi
7:19/mi
2:48:16
↓ 200.3%
25.2M
8:07/mi
2:51:04
↑ 13↓ 160.2%
Finish· 26.22 mi
7:08/mi
2:58:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:50
Pace6:28 /mi
2nd Half
Distance13.11 mi
Time1:33:30
Pace7:08 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:4220:056:2820:05
6:28
-
10K
6.21 mi11:05:2939:526:2519:47
6:22
-0:06
15K
9.32 mi11:25:3159:546:2620:02
6:27
+0:05
20K
12.43 mi11:46:031:20:266:2820:32
6:37
+0:10
Half
13.11 mi11:50:271:24:506:284:24
6:27
-0:10
25K
15.53 mi12:06:371:41:006:3016:10
6:40
+0:13
30K
18.64 mi12:28:522:03:156:3722:15
7:10
+0:30
20M
20.00 mi12:38:472:13:106:399:55
7:18
+0:08
21M
21.00 mi12:46:382:21:016:437:51
7:51
+0:33
35K
21.75 mi12:51:462:26:096:435:08
6:52
-0:59
23M
23.00 mi13:00:452:35:086:458:59
7:10
+0:18
24M
24.00 mi13:07:382:42:016:456:53
6:53
-0:17
40K
24.85 mi13:13:532:48:166:466:15
7:19
+0:26
25.2M
25.20 mi13:16:412:51:046:472:48
8:07
+0:48
Finish
26.22 mi13:23:572:58:206:487:16
7:08
-0:59

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

6:22 /mi

Average Pace

6:48 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:50

48% of race

Time at Steady Pace

35:27

20% of race

Time at Slower Pace

58:03

33% of race

Average Pace: 6:48 /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 mi10:45:4220:056:2820:05
6:28
#3585
10K
6.21 mi11:05:2939:526:2519:47
6:22
#3180
15K
9.32 mi11:25:3159:546:2620:02
6:27
#3194
20K
12.43 mi11:46:031:20:266:2820:32
6:37
#3312
Half
13.11 mi11:50:271:24:506:284:24
6:27
#3314
25K
15.53 mi12:06:371:41:006:3016:10
6:40
#3399
30K
18.64 mi12:28:522:03:156:3722:15
7:10
#3722
20M
20.00 mi12:38:472:13:106:399:55
7:18
#3830
21M
21.00 mi12:46:382:21:016:437:51
7:51
#3956
35K
21.75 mi12:51:462:26:096:435:08
6:52
#3952
23M
23.00 mi13:00:452:35:086:458:59
7:10
#3989
24M
24.00 mi13:07:382:42:016:456:53
6:53
#3965
40K
24.85 mi13:13:532:48:166:466:15
7:19
#4004
25.2M
25.20 mi13:16:412:51:046:472:48
8:07
#4041
Finish
26.22 mi13:23:572:58:206:487:16
7:08
#4126
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi35851741743254(Top 11%)155(Top 1%)155(Top 9%)
10K6.21 mi3.10 mi3180+405149+25149+252855(Top 10%)131(Top 1%)131(Top 8%)
15K9.32 mi3.11 mi3194-14150-1150-13254(Top 11%)155(Top 1%)155(Top 9%)
20K12.43 mi3.11 mi3312-118153-3153-33768(Top 13%)204(Top 2%)204(Top 12%)
Half13.11 mi0.68 mi3314-2156-3156-33440(Top 12%)175(Top 1%)175(Top 10%)
25K15.53 mi2.42 mi3399-85164-8164-83921(Top 14%)251(Top 2%)251(Top 15%)
30K18.64 mi3.11 mi3722-323203-39203-395685(Top 20%)590(Top 5%)590(Top 34%)
20M20.00 mi1.36 mi3830-108217-14217-145798(Top 20%)726(Top 6%)726(Top 42%)
21M21.00 mi1.00 mi3956-126240-23240-236499(Top 23%)1090(Top 9%)1090(Top 63%)
35K21.75 mi0.75 mi3952+4247-7247-74532(Top 16%)488(Top 4%)488(Top 28%)
23M23.00 mi1.25 mi3989-37264-17264-174747(Top 17%)596(Top 5%)596(Top 35%)
24M24.00 mi1.00 mi3965+24271-7271-74019(Top 14%)455(Top 4%)455(Top 26%)
40K24.85 mi0.85 mi4004-39278-7278-75716(Top 20%)1013(Top 8%)1013(Top 59%)
25.2M25.20 mi0.35 mi4041-37290-12290-126624(Top 23%)1452(Top 12%)1452(Top 85%)
Finish26.22 mi1.02 mi4126-85310-20310-206582(Top 23%)1468(Top 12%)1468(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

3254

Females

155

F40-44

155

5K→10K

3.1 - 6.2 mi

Top 10%
×5story building
+79ft-138ft

Overall

2855

Females

131

F40-44

131

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

3254

Females

155

F40-44

155

15K→20K

9.3 - 12.4 mi

Top 13%
×5story building
+106ft-86ft

Overall

3768

Females

204

F40-44

204

20K→Half

12.4 - 13.1 mi

Top 12%
×2story building
+19ft-37ft

Overall

3440

Females

175

F40-44

175

Half→25K

13.1 - 15.5 mi

Top 14%
×4story building
+66ft-88ft

Overall

3921

Females

251

F40-44

251

25K→30K

15.5 - 18.6 mi

Top 20%
×9story building
+181ft-148ft

Overall

5685

Females

590

F40-44

590

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5798

Females

726

F40-44

726

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6499

Females

1090

F40-44

1090

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4532

Females

488

F40-44

488

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4747

Females

596

F40-44

596

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

4019

Females

455

F40-44

455

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5716

Females

1013

F40-44

1013

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6624

Females

1452

F40-44

1452

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6582

Females

1468

F40-44

1468

Passing Analysis

Category:
Athletes Passed
970
Passed By
1511
Net Change
-541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3585
5K → 10K42823+405#3585#3180
10K → 15K8195-14#3180#3194
15K → 20K61179-118#3194#3312
20K → Half1315-2#3312#3314
Half → 25K47132-85#3314#3399
25K → 30K42365-323#3399#3722
30K → 20M34142-108#3722#3830
20M → 21M34160-126#3830#3956
21M → 35K4137+4#3956#3952
35K → 23M6299-37#3952#3989
23M → 24M6036+24#3989#3965
24M → 40K3473-39#3965#4004
40K → 25.2M1047-37#4004#4041
25.2M → Finish23108-85#4041#4126
TOTALS9701511-541
📊

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