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BOSTON MARATHON 2023

Marissa Jensen

Bib: 8536•F

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 15%
Division (F18-39)
#0 / 4884
Top 28%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:47
Rank: #3601
Start → 5K
20:47 | 6:41/mi
10K· 6.21 mi
41:46
Rank: #4212 (-611)
5K → 10K
20:59 | 6:45/mi
15K· 9.32 mi
1:03:00
Rank: #4607 (-395)
10K → 15K
21:14 | 6:50/mi
20K· 12.43 mi
1:24:49
Rank: #5084 (-477)
15K → 20K
21:49 | 7:01/mi
Half· 13.11 mi
1:30:12
Rank: #5586 (-502)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
1:47:50
Rank: #5854 (-268)
Half → 25K
17:38 | 7:16/mi
30K· 18.64 mi
2:13:10
Rank: #6650 (-796)
25K → 30K
25:20 | 8:09/mi
20M
2:25:28
Rank: #7269 (-619)
30K → 20M
12:18 | 9:03/mi
21M
2:34:22
Rank: #7532 (-263)
20M → 21M
8:54 | 8:54/mi
35K· 21.75 mi
2:40:48
Rank: #7805 (-273)
21M → 35K
6:26 | 8:36/mi
23M
2:52:15
Rank: #8386 (-581)
35K → 23M
11:27 | 9:09/mi
24M
3:00:40
Rank: #8630 (-244)
23M → 24M
8:25 | 8:25/mi
40K· 24.85 mi
3:08:06
Rank: #8851 (-221)
24M → 40K
7:26 | 8:42/mi
25.2M
3:11:36
Rank: #9005 (-154)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:20:13
Rank: #9254 (-249)
25.2M → Finish
8:37 | 8:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:12
Pace6:53 /mi
2nd Half
Distance13.11 mi
Time1:50:01
Pace8:24 /mi
📊Positive Split: 22.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:5920:476:4120:47
6:41
-
10K
6.21 mi11:06:5841:466:4320:59
6:45
+0:04
15K
9.32 mi11:28:121:03:006:4621:14
6:50
+0:05
20K
12.43 mi11:50:011:24:496:4921:49
7:01
+0:11
Half
13.11 mi11:55:241:30:126:535:23
7:53
+0:52
25K
15.53 mi12:13:021:47:506:5617:38
7:16
-0:37
30K
18.64 mi12:38:222:13:107:0925:20
8:09
+0:53
20M
20.00 mi12:50:402:25:287:1612:18
9:03
+0:54
21M
21.00 mi12:59:342:34:227:218:54
8:54
-0:09
35K
21.75 mi13:06:002:40:487:246:26
8:36
-0:18
23M
23.00 mi13:17:272:52:157:2911:27
9:09
+0:33
24M
24.00 mi13:25:523:00:407:328:25
8:25
-0:44
40K
24.85 mi13:33:183:08:067:347:26
8:42
+0:17
25.2M
25.20 mi13:36:483:11:367:363:30
10:09
+1:27
Finish
26.22 mi13:45:253:20:137:398:37
8:27
-1:42

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

6:41 /mi

Average Pace

7:39 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:50

54% of race

Time at Steady Pace

1:05:08

33% of race

Time at Slower Pace

27:15

14% of race

Average Pace: 7:38 /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 mi10:45:5920:476:4120:47
6:41
#3601
10K
6.21 mi11:06:5841:466:4320:59
6:45
#4212
15K
9.32 mi11:28:121:03:006:4621:14
6:50
#4607
20K
12.43 mi11:50:011:24:496:4921:49
7:01
#5084
Half
13.11 mi11:55:241:30:126:535:23
7:53
#5586
25K
15.53 mi12:13:021:47:506:5617:38
7:16
#5854
30K
18.64 mi12:38:222:13:107:0925:20
8:09
#6650
20M
20.00 mi12:50:402:25:287:1612:18
9:03
#7269
21M
21.00 mi12:59:342:34:227:218:54
8:54
#7532
35K
21.75 mi13:06:002:40:487:246:26
8:36
#7805
23M
23.00 mi13:17:272:52:157:2911:27
9:09
#8386
24M
24.00 mi13:25:523:00:407:328:25
8:25
#8630
40K
24.85 mi13:33:183:08:067:347:26
8:42
#8851
25.2M
25.20 mi13:36:483:11:367:363:30
10:09
#9005
Finish
26.22 mi13:45:253:20:137:398:37
8:27
#9254
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi36012042045449(Top 20%)425(Top 4%)425(Top 9%)
10K6.21 mi3.10 mi4212-611260-56260-564877(Top 18%)347(Top 3%)347(Top 7%)
15K9.32 mi3.11 mi4607-395303-43303-435449(Top 20%)425(Top 4%)425(Top 9%)
20K12.43 mi3.11 mi5084-477361-58361-586130(Top 23%)558(Top 5%)558(Top 11%)
Half13.11 mi0.68 mi5586-502430-69430-6913503(Top 51%)3779(Top 33%)3779(Top 77%)
25K15.53 mi2.42 mi5854-268484-54484-547138(Top 27%)889(Top 8%)889(Top 18%)
30K18.64 mi3.11 mi6650-796690-206690-20612026(Top 45%)3194(Top 28%)3194(Top 65%)
20M20.00 mi1.36 mi7269-619867-177867-17716805(Top 63%)6030(Top 53%)6030(Top 123%)
21M21.00 mi1.00 mi7532-263985-118985-11812848(Top 48%)3856(Top 34%)3856(Top 79%)
35K21.75 mi0.75 mi7805-2731082-971082-9715856(Top 60%)5591(Top 49%)5591(Top 114%)
23M23.00 mi1.25 mi8386-5811326-2441326-24416768(Top 63%)6160(Top 54%)6160(Top 126%)
24M24.00 mi1.00 mi8630-2441444-1181444-11813974(Top 52%)4648(Top 41%)4648(Top 95%)
40K24.85 mi0.85 mi8851-2211562-1181562-11814469(Top 54%)4999(Top 44%)4999(Top 102%)
25.2M25.20 mi0.35 mi9005-1541621-591621-5917950(Top 67%)6921(Top 61%)6921(Top 142%)
Finish26.22 mi1.02 mi9254-2491756-1351756-13515124(Top 57%)5313(Top 47%)5313(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5449

Females

425

F18-39

425

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4877

Females

347

F18-39

347

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5449

Females

425

F18-39

425

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6130

Females

558

F18-39

558

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13503

Females

3779

F18-39

3779

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7138

Females

889

F18-39

889

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12026

Females

3194

F18-39

3194

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16805

Females

6030

F18-39

6030

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12848

Females

3856

F18-39

3856

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

15856

Females

5591

F18-39

5591

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16768

Females

6160

F18-39

6160

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

13974

Females

4648

F18-39

4648

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14469

Females

4999

F18-39

4999

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17950

Females

6921

F18-39

6921

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

15124

Females

5313

F18-39

5313

Passing Analysis

Category:
Athletes Passed
240
Passed By
5893
Net Change
-5653
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3601
5K → 10K35646-611#3601#4212
10K → 15K45440-395#4212#4607
15K → 20K19496-477#4607#5084
20K → Half1503-502#5084#5586
Half → 25K24292-268#5586#5854
25K → 30K19815-796#5854#6650
30K → 20M4623-619#6650#7269
20M → 21M16279-263#7269#7532
21M → 35K8281-273#7532#7805
35K → 23M12593-581#7805#8386
23M → 24M27271-244#8386#8630
24M → 40K14235-221#8630#8851
40K → 25.2M4158-154#8851#9005
25.2M → Finish12261-249#9005#9254
TOTALS2405893-5653
📊

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