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BOSTON MARATHON 2023

Elizabeth Polzello

Bib: 23235•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
8:28/mi
26:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:26/mi
52:29
↑ 79↓ 1380.4%
15K· 9.32 mi
8:30/mi
1:18:55
↑ 67↓ 78
20K· 12.43 mi
8:42/mi
1:45:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:33/mi
1:51:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:47/mi
2:13:03
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:41:35
↑ 181↓ 1480.2%
20M
9:21/mi
2:54:18
↑ 64↓ 500.2%
21M
10:16/mi
3:04:34
↑ 106↓ 241.6%
35K· 21.75 mi
9:15/mi
3:11:29
↑ 17↓ 861.7%
23M
9:34/mi
3:23:28
↑ 23↓ 630.6%
24M
9:19/mi
3:32:47
↓ 821.3%
40K· 24.85 mi
9:34/mi
3:40:58
↓ 200.3%
25.2M
10:09/mi
3:44:28
↑ 13↓ 160.2%
Finish· 26.22 mi
9:08/mi
3:53:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:46
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:02:00
Pace9:18 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1626:178:2826:17
8:28
-
10K
6.21 mi11:47:2852:298:2726:12
8:26
-0:02
15K
9.32 mi12:13:541:18:558:2826:26
8:30
+0:04
20K
12.43 mi12:40:551:45:568:3127:01
8:42
+0:12
Half
13.11 mi12:46:451:51:468:325:50
8:33
-0:09
25K
15.53 mi13:08:022:13:038:3421:17
8:47
+0:14
30K
18.64 mi13:36:342:41:358:4028:32
9:11
+0:24
20M
20.00 mi13:49:172:54:188:4312:43
9:21
+0:10
21M
21.00 mi13:59:333:04:348:4710:16
10:16
+0:55
35K
21.75 mi14:06:283:11:298:486:55
9:15
-1:01
23M
23.00 mi14:18:273:23:288:5111:59
9:34
+0:19
24M
24.00 mi14:27:463:32:478:529:19
9:19
-0:15
40K
24.85 mi14:35:573:40:588:538:11
9:34
+0:15
25.2M
25.20 mi14:39:273:44:288:543:30
10:09
+0:35
Finish
26.22 mi14:48:453:53:468:559:18
9:08
-1:01

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

8:26 /mi

Average Pace

8:55 /mi

Slowest Pace

10:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:03

57% of race

Time at Steady Pace

1:06:47

29% of race

Time at Slower Pace

33:56

15% of race

Average Pace: 8:55 /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 mi11:21:1626:178:2826:17
8:28
#17292
10K
6.21 mi11:47:2852:298:2726:12
8:26
#17525
15K
9.32 mi12:13:541:18:558:2826:26
8:30
#17635
20K
12.43 mi12:40:551:45:568:3127:01
8:42
#17723
Half
13.11 mi12:46:451:51:468:325:50
8:33
#17717
25K
15.53 mi13:08:022:13:038:3421:17
8:47
#17718
30K
18.64 mi13:36:342:41:358:4028:32
9:11
#17766
20M
20.00 mi13:49:172:54:188:4312:43
9:21
#17812
21M
21.00 mi13:59:333:04:348:4710:16
10:16
#17919
35K
21.75 mi14:06:283:11:298:486:55
9:15
#17974
23M
23.00 mi14:18:273:23:288:5111:59
9:34
#18034
24M
24.00 mi14:27:463:32:478:529:19
9:19
#18075
40K
24.85 mi14:35:573:40:588:538:11
9:34
#18106
25.2M
25.20 mi14:39:273:44:288:543:30
10:09
#18115
Finish
26.22 mi14:48:453:53:468:559:18
9:08
#18135
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi172926124612417878(Top 67%)6428(Top 56%)6428(Top 789%)
10K6.21 mi3.10 mi17525-2336240-1166240-11617829(Top 67%)6390(Top 56%)6390(Top 784%)
15K9.32 mi3.11 mi17635-1106296-566296-5617878(Top 67%)6428(Top 56%)6428(Top 789%)
20K12.43 mi3.11 mi17723-886358-626358-6218107(Top 68%)6571(Top 58%)6571(Top 806%)
Half13.11 mi0.68 mi17717+66354+46354+418059(Top 68%)6523(Top 57%)6523(Top 800%)
25K15.53 mi2.42 mi17718-16365-116365-1117846(Top 67%)6490(Top 57%)6490(Top 796%)
30K18.64 mi3.11 mi17766-486415-506415-5018098(Top 68%)6708(Top 59%)6708(Top 823%)
20M20.00 mi1.36 mi17812-466468-536468-5318276(Top 69%)6893(Top 60%)6893(Top 846%)
21M21.00 mi1.00 mi17919-1076544-766544-7618936(Top 71%)7300(Top 64%)7300(Top 896%)
35K21.75 mi0.75 mi17974-556578-346578-3418939(Top 71%)7352(Top 64%)7352(Top 902%)
23M23.00 mi1.25 mi18034-606627-496627-4918614(Top 70%)7191(Top 63%)7191(Top 882%)
24M24.00 mi1.00 mi18075-416673-466673-4618541(Top 70%)7192(Top 63%)7192(Top 882%)
40K24.85 mi0.85 mi18106-316701-286701-2818586(Top 70%)7266(Top 64%)7266(Top 892%)
25.2M25.20 mi0.35 mi18115-96711-106711-1017987(Top 68%)6958(Top 61%)6958(Top 854%)
Finish26.22 mi1.02 mi18135-206731-206731-2018585(Top 70%)7215(Top 63%)7215(Top 885%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17878

Females

6428

F55-59

6428

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17829

Females

6390

F55-59

6390

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17878

Females

6428

F55-59

6428

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

18107

Females

6571

F55-59

6571

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18059

Females

6523

F55-59

6523

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17846

Females

6490

F55-59

6490

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18098

Females

6708

F55-59

6708

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18276

Females

6893

F55-59

6893

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18936

Females

7300

F55-59

7300

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18939

Females

7352

F55-59

7352

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18614

Females

7191

F55-59

7191

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18541

Females

7192

F55-59

7192

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18586

Females

7266

F55-59

7266

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

17987

Females

6958

F55-59

6958

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18585

Females

7215

F55-59

7215

Passing Analysis

Category:
Athletes Passed
1174
Passed By
2017
Net Change
-843
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17292
5K → 10K200433-233#17292#17525
10K → 15K149259-110#17525#17635
15K → 20K143231-88#17635#17723
20K → Half3226+6#17723#17717
Half → 25K121122-1#17717#17718
25K → 30K164212-48#17718#17766
30K → 20M78124-46#17766#17812
20M → 21M55162-107#17812#17919
21M → 35K2580-55#17919#17974
35K → 23M57117-60#17974#18034
23M → 24M4586-41#18034#18075
24M → 40K3869-31#18075#18106
40K → 25.2M1928-9#18106#18115
25.2M → Finish4868-20#18115#18135
TOTALS11742017-843
📊

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