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BOSTON MARATHON 2023

Jenna Bernstein

Bib: 12608•F

CT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 28%
Division (F18-39)
#0 / 4884
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:11
Rank: #9330
Start → 5K
23:11 | 7:28/mi
10K· 6.21 mi
46:35
Rank: #10005 (-675)
5K → 10K
23:24 | 7:32/mi
15K· 9.32 mi
1:10:00
Rank: #10161 (-156)
10K → 15K
23:25 | 7:32/mi
20K· 12.43 mi
1:34:15
Rank: #10565 (-404)
15K → 20K
24:15 | 7:48/mi
Half· 13.11 mi
1:39:30
Rank: #10643 (-78)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
1:59:00
Rank: #10990 (-347)
Half → 25K
19:30 | 8:03/mi
30K· 18.64 mi
2:24:56
Rank: #11398 (-408)
25K → 30K
25:56 | 8:21/mi
20M
2:36:30
Rank: #11581 (-183)
30K → 20M
11:34 | 8:31/mi
21M
2:45:48
Rank: #11821 (-240)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
2:51:47
Rank: #11840 (-19)
21M → 35K
5:59 | 8:00/mi
23M
3:02:31
Rank: #11938 (-98)
35K → 23M
10:44 | 8:34/mi
24M
3:10:46
Rank: #11984 (-46)
23M → 24M
8:15 | 8:15/mi
40K· 24.85 mi
3:18:01
Rank: #12031 (-47)
24M → 40K
7:15 | 8:29/mi
25.2M
3:21:13
Rank: #12058 (-27)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:29:37
Rank: #12131 (-73)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:30
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:50:07
Pace8:24 /mi
📊Positive Split: 10.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4623:117:2823:11
7:28
-
10K
6.21 mi11:14:1046:357:3023:24
7:32
+0:04
15K
9.32 mi11:37:351:10:007:3123:25
7:32
0:00
20K
12.43 mi12:01:501:34:157:3524:15
7:48
+0:16
Half
13.11 mi12:07:051:39:307:355:15
7:42
-0:06
25K
15.53 mi12:26:351:59:007:4019:30
8:03
+0:21
30K
18.64 mi12:52:312:24:567:4625:56
8:21
+0:18
20M
20.00 mi13:04:052:36:307:4911:34
8:31
+0:10
21M
21.00 mi13:13:232:45:487:549:18
9:18
+0:47
35K
21.75 mi13:19:222:51:477:545:59
8:00
-1:18
23M
23.00 mi13:30:063:02:317:5610:44
8:34
+0:34
24M
24.00 mi13:38:213:10:467:578:15
8:15
-0:19
40K
24.85 mi13:45:363:18:017:587:15
8:29
+0:14
25.2M
25.20 mi13:48:483:21:137:593:12
9:17
+0:48
Finish
26.22 mi13:57:123:29:378:008:24
8:15
-1:02

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

7:28 /mi

Average Pace

8:00 /mi

Slowest Pace

9:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:30

47% of race

Time at Steady Pace

1:26:53

41% of race

Time at Slower Pace

23:14

11% of race

Average Pace: 8:00 /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 mi10:50:4623:117:2823:11
7:28
#9330
10K
6.21 mi11:14:1046:357:3023:24
7:32
#10005
15K
9.32 mi11:37:351:10:007:3123:25
7:32
#10161
20K
12.43 mi12:01:501:34:157:3524:15
7:48
#10565
Half
13.11 mi12:07:051:39:307:355:15
7:42
#10643
25K
15.53 mi12:26:351:59:007:4019:30
8:03
#10990
30K
18.64 mi12:52:312:24:567:4625:56
8:21
#11398
20M
20.00 mi13:04:052:36:307:4911:34
8:31
#11581
21M
21.00 mi13:13:232:45:487:549:18
9:18
#11821
35K
21.75 mi13:19:222:51:477:545:59
8:00
#11840
23M
23.00 mi13:30:063:02:317:5610:44
8:34
#11938
24M
24.00 mi13:38:213:10:467:578:15
8:15
#11984
40K
24.85 mi13:45:363:18:017:587:15
8:29
#12031
25.2M
25.20 mi13:48:483:21:137:593:12
9:17
#12058
Finish
26.22 mi13:57:123:29:378:008:24
8:15
#12131
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi93301550155010506(Top 39%)2082(Top 18%)2082(Top 43%)
10K6.21 mi3.10 mi10005-6751845-2951845-29510737(Top 40%)2178(Top 19%)2178(Top 45%)
15K9.32 mi3.11 mi10161-1561891-461891-4610506(Top 39%)2082(Top 18%)2082(Top 43%)
20K12.43 mi3.11 mi10565-4042108-2172108-21711809(Top 44%)2858(Top 25%)2858(Top 59%)
Half13.11 mi0.68 mi10643-782152-442152-4411926(Top 45%)2878(Top 25%)2878(Top 59%)
25K15.53 mi2.42 mi10990-3472348-1962348-19613093(Top 49%)3677(Top 32%)3677(Top 75%)
30K18.64 mi3.11 mi11398-4082636-2882636-28813326(Top 50%)3931(Top 34%)3931(Top 80%)
20M20.00 mi1.36 mi11581-1832759-1232759-12313699(Top 51%)4232(Top 37%)4232(Top 87%)
21M21.00 mi1.00 mi11821-2402916-1572916-15714981(Top 56%)5035(Top 44%)5035(Top 103%)
35K21.75 mi0.75 mi11840-192937-212937-2112138(Top 46%)3501(Top 31%)3501(Top 72%)
23M23.00 mi1.25 mi11938-983022-853022-8513667(Top 51%)4425(Top 39%)4425(Top 91%)
24M24.00 mi1.00 mi11984-463070-483070-4812950(Top 49%)4102(Top 36%)4102(Top 84%)
40K24.85 mi0.85 mi12031-473119-493119-4913213(Top 50%)4311(Top 38%)4311(Top 88%)
25.2M25.20 mi0.35 mi12058-273140-213140-2114104(Top 53%)4788(Top 42%)4788(Top 98%)
Finish26.22 mi1.02 mi12131-733199-593199-5913730(Top 52%)4589(Top 40%)4589(Top 94%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10506

Females

2082

F18-39

2082

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10737

Females

2178

F18-39

2178

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10506

Females

2082

F18-39

2082

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11809

Females

2858

F18-39

2858

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

11926

Females

2878

F18-39

2878

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13093

Females

3677

F18-39

3677

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13326

Females

3931

F18-39

3931

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

13699

Females

4232

F18-39

4232

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14981

Females

5035

F18-39

5035

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12138

Females

3501

F18-39

3501

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

13667

Females

4425

F18-39

4425

23M→24M

23.0 - 24.0 mi

Top 49%
×6stories
+12ft-82ft

Overall

12950

Females

4102

F18-39

4102

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13213

Females

4311

F18-39

4311

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14104

Females

4788

F18-39

4788

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

13730

Females

4589

F18-39

4589

Passing Analysis

Category:
Athletes Passed
766
Passed By
3565
Net Change
-2801
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9330
5K → 10K87761-675#9330#10005
10K → 15K129284-156#10005#10161
15K → 20K54458-404#10161#10565
20K → Half1088-78#10565#10643
Half → 25K55402-347#10643#10990
25K → 30K81489-408#10990#11398
30K → 20M43226-183#11398#11581
20M → 21M30270-240#11581#11821
21M → 35K3857-19#11821#11840
35K → 23M63161-98#11840#11938
23M → 24M54100-46#11938#11984
24M → 40K5097-47#11984#12031
40K → 25.2M2148-27#12031#12058
25.2M → Finish51124-73#12058#12131
TOTALS7663565-2801
📊

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