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BOSTON MARATHON 2023

Jennifer Selig Boerner

Bib: 8855•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 22%
Gender (Female)
#0 / 11423
Top 5%
Masters (Masters Women)
#0 / 6539
Top 2%
Division (F40-44)
#0 / 1878
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:12
Rank: #4916
Start → 5K
21:12 | 6:49/mi
10K· 6.21 mi
41:12
Rank: #3396 (+1520)
5K → 10K
20:00 | 6:26/mi
15K· 9.32 mi
1:01:53
Rank: #3480 (-84)
10K → 15K
20:41 | 6:39/mi
20K· 12.43 mi
1:23:04
Rank: #3720 (-240)
15K → 20K
21:11 | 6:49/mi
Half· 13.11 mi
1:27:37
Rank: #3732 (-12)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:29
Rank: #4028 (-296)
Half → 25K
16:52 | 6:57/mi
30K· 18.64 mi
2:08:59
Rank: #5321 (-1293)
25K → 30K
24:30 | 7:53/mi
20M
2:19:06
Rank: #5389 (-68)
30K → 20M
10:07 | 7:27/mi
21M
2:27:10
Rank: #5467 (-78)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:32:53
Rank: #5570 (-103)
21M → 35K
5:43 | 7:38/mi
23M
2:42:49
Rank: #5682 (-112)
35K → 23M
9:56 | 7:56/mi
24M
2:50:37
Rank: #5786 (-104)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
2:57:36
Rank: #5903 (-117)
24M → 40K
6:59 | 8:10/mi
25.2M
3:00:29
Rank: #5931 (-28)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:08:12
Rank: #5991 (-60)
25.2M → Finish
7:43 | 7:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:37
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:40:35
Pace7:40 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4321:126:4921:12
6:49
-
10K
6.21 mi11:07:4341:126:3820:00
6:26
-0:23
15K
9.32 mi11:28:241:01:536:3820:41
6:39
+0:13
20K
12.43 mi11:49:351:23:046:4121:11
6:49
+0:10
Half
13.11 mi11:54:081:27:376:414:33
6:40
-0:09
25K
15.53 mi12:11:001:44:296:4416:52
6:57
+0:17
30K
18.64 mi12:35:302:08:596:5524:30
7:53
+0:56
20M
20.00 mi12:45:372:19:066:5710:07
7:27
-0:26
21M
21.00 mi12:53:412:27:107:008:04
8:04
+0:37
35K
21.75 mi12:59:242:32:537:025:43
7:38
-0:26
23M
23.00 mi13:09:202:42:497:059:56
7:56
+0:18
24M
24.00 mi13:17:082:50:377:077:48
7:48
-0:08
40K
24.85 mi13:24:072:57:367:096:59
8:10
+0:22
25.2M
25.20 mi13:27:003:00:297:102:53
8:22
+0:12
Finish
26.22 mi13:34:433:08:127:117:43
7:34
-0:48

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

6:26 /mi

Average Pace

7:11 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:29

56% of race

Time at Steady Pace

31:21

17% of race

Time at Slower Pace

52:22

28% of race

Average Pace: 7:11 /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 mi10:47:4321:126:4921:12
6:49
#4916
10K
6.21 mi11:07:4341:126:3820:00
6:26
#3396
15K
9.32 mi11:28:241:01:536:3820:41
6:39
#3480
20K
12.43 mi11:49:351:23:046:4121:11
6:49
#3720
Half
13.11 mi11:54:081:27:376:414:33
6:40
#3732
25K
15.53 mi12:11:001:44:296:4416:52
6:57
#4028
30K
18.64 mi12:35:302:08:596:5524:30
7:53
#5321
20M
20.00 mi12:45:372:19:066:5710:07
7:27
#5389
21M
21.00 mi12:53:412:27:107:008:04
8:04
#5467
35K
21.75 mi12:59:242:32:537:025:43
7:38
#5570
23M
23.00 mi13:09:202:42:497:059:56
7:56
#5682
24M
24.00 mi13:17:082:50:377:077:48
7:48
#5786
40K
24.85 mi13:24:072:57:367:096:59
8:10
#5903
25.2M
25.20 mi13:27:003:00:297:102:53
8:22
#5931
Finish
26.22 mi13:34:433:08:127:117:43
7:34
#5991
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi49163483483768(Top 14%)217(Top 2%)217(Top 12%)
10K6.21 mi3.10 mi3396+1520181+167181+1672443(Top 9%)104(Top 0.9%)104(Top 6%)
15K9.32 mi3.11 mi3480-84182-1182-13768(Top 14%)217(Top 2%)217(Top 12%)
20K12.43 mi3.11 mi3720-240198-16198-164630(Top 17%)316(Top 3%)316(Top 17%)
Half13.11 mi0.68 mi3732-12201-3201-34157(Top 16%)273(Top 2%)273(Top 15%)
25K15.53 mi2.42 mi4028-296236-35236-355347(Top 20%)416(Top 4%)416(Top 22%)
30K18.64 mi3.11 mi5321-1293402-166402-16610024(Top 38%)2169(Top 19%)2169(Top 115%)
20M20.00 mi1.36 mi5389-68415-13415-136456(Top 24%)833(Top 7%)833(Top 44%)
21M21.00 mi1.00 mi5467-78440-25440-257796(Top 29%)1411(Top 12%)1411(Top 75%)
35K21.75 mi0.75 mi5570-103454-14454-149571(Top 36%)2156(Top 19%)2156(Top 115%)
23M23.00 mi1.25 mi5682-112500-46500-469302(Top 35%)2162(Top 19%)2162(Top 115%)
24M24.00 mi1.00 mi5786-104535-35535-359800(Top 37%)2485(Top 22%)2485(Top 132%)
40K24.85 mi0.85 mi5903-117574-39574-3911141(Top 42%)3211(Top 28%)3211(Top 171%)
25.2M25.20 mi0.35 mi5931-28585-11585-118688(Top 33%)2091(Top 18%)2091(Top 111%)
Finish26.22 mi1.02 mi5991-60610-25610-259105(Top 34%)2275(Top 20%)2275(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3768

Females

217

F40-44

217

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2443

Females

104

F40-44

104

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3768

Females

217

F40-44

217

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4630

Females

316

F40-44

316

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4157

Females

273

F40-44

273

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5347

Females

416

F40-44

416

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10024

Females

2169

F40-44

2169

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6456

Females

833

F40-44

833

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7796

Females

1411

F40-44

1411

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

9571

Females

2156

F40-44

2156

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9302

Females

2162

F40-44

2162

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9800

Females

2485

F40-44

2485

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11141

Females

3211

F40-44

3211

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8688

Females

2091

F40-44

2091

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9105

Females

2275

F40-44

2275

Passing Analysis

Category:
Athletes Passed
1899
Passed By
2974
Net Change
-1075
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4916
5K → 10K15244+1520#4916#3396
10K → 15K68152-84#3396#3480
15K → 20K31271-240#3480#3720
20K → Half1426-12#3720#3732
Half → 25K27323-296#3732#4028
25K → 30K61299-1293#4028#5321
30K → 20M44112-68#5321#5389
20M → 21M35113-78#5389#5467
21M → 35K10113-103#5467#5570
35K → 23M49161-112#5570#5682
23M → 24M18122-104#5682#5786
24M → 40K23140-117#5786#5903
40K → 25.2M1038-28#5903#5931
25.2M → Finish40100-60#5931#5991
TOTALS18992974-1075
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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