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BOSTON MARATHON 2023

Zelia Magliozzi

Bib: 27953•F

MA

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
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
10:11/mi
31:38
↑ 97↓ 3451.5%
10K· 6.21 mi
10:21/mi
1:03:47
↑ 79↓ 1380.4%
15K· 9.32 mi
10:17/mi
1:35:45
↑ 67↓ 78
20K· 12.43 mi
10:34/mi
2:08:36
↑ 106↓ 860.1%
Half· 13.11 mi
10:04/mi
2:15:28
↑ 19↓ 370.5%
25K· 15.53 mi
11:36/mi
2:43:35
↑ 66↓ 880.2%
30K· 18.64 mi
10:42/mi
3:16:49
↑ 181↓ 1480.2%
20M
10:53/mi
3:31:37
↑ 64↓ 500.2%
21M
14:21/mi
3:45:58
↑ 106↓ 241.6%
35K· 21.75 mi
10:36/mi
3:53:54
↑ 17↓ 861.7%
23M
12:15/mi
4:09:14
↑ 23↓ 630.6%
24M
10:12/mi
4:19:26
↓ 821.3%
40K· 24.85 mi
11:13/mi
4:29:01
↓ 200.3%
25.2M
11:13/mi
4:32:53
↑ 13↓ 160.2%
Finish· 26.22 mi
10:09/mi
4:43:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:28
Pace10:20 /mi
2nd Half
Distance13.11 mi
Time2:27:46
Pace11:16 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:4931:3810:1131:38
10:11
-
10K
6.21 mi12:28:581:03:4710:1632:09
10:21
+0:10
15K
9.32 mi13:00:561:35:4510:1631:58
10:17
-0:04
20K
12.43 mi13:33:472:08:3610:2132:51
10:34
+0:17
Half
13.11 mi13:40:392:15:2810:206:52
10:04
-0:30
25K
15.53 mi14:08:462:43:3510:3228:07
11:36
+1:32
30K
18.64 mi14:42:003:16:4910:3333:14
10:42
-0:54
20M
20.00 mi14:56:483:31:3710:3514:48
10:53
+0:11
21M
21.00 mi15:11:093:45:5810:4614:21
14:21
+3:28
35K
21.75 mi15:19:053:53:5410:457:56
10:36
-3:45
23M
23.00 mi15:34:254:09:1410:5015:20
12:15
+1:39
24M
24.00 mi15:44:374:19:2610:4910:12
10:12
-2:03
40K
24.85 mi15:54:124:29:0110:499:35
11:13
+1:01
25.2M
25.20 mi15:58:044:32:5310:503:52
11:13
0:00
Finish
26.22 mi16:08:254:43:1410:4910:21
10:09
-1:04

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

10:04 /mi

Average Pace

10:49 /mi

Slowest Pace

14:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:31:59

75% of race

Time at Slower Pace

1:11:15

25% of race

Average Pace: 10:48 /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 mi11:56:4931:3810:1131:38
10:11
#23904
10K
6.21 mi12:28:581:03:4710:1632:09
10:21
#24194
15K
9.32 mi13:00:561:35:4510:1631:58
10:17
#24161
20K
12.43 mi13:33:472:08:3610:2132:51
10:34
#24112
Half
13.11 mi13:40:392:15:2810:206:52
10:04
#24068
25K
15.53 mi14:08:462:43:3510:3228:07
11:36
#24234
30K
18.64 mi14:42:003:16:4910:3333:14
10:42
#23921
20M
20.00 mi14:56:483:31:3710:3514:48
10:53
#23818
21M
21.00 mi15:11:093:45:5810:4614:21
14:21
#23971
35K
21.75 mi15:19:053:53:5410:457:56
10:36
#23923
23M
23.00 mi15:34:254:09:1410:5015:20
12:15
#23971
24M
24.00 mi15:44:374:19:2610:4910:12
10:12
#23882
40K
24.85 mi15:54:124:29:0110:499:35
11:13
#23844
25.2M
25.20 mi15:58:044:32:5310:503:52
11:13
#23808
Finish
26.22 mi16:08:254:43:1410:4910:21
10:09
#23765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi239049841984124073(Top 90%)9931(Top 87%)9931(Top 1219%)
10K6.21 mi3.10 mi24194-2909992-1519992-15124398(Top 92%)10113(Top 89%)10113(Top 1241%)
15K9.32 mi3.11 mi24161+339979+139979+1324073(Top 90%)9931(Top 87%)9931(Top 1219%)
20K12.43 mi3.11 mi24112+499955+249955+2423969(Top 90%)9887(Top 87%)9887(Top 1213%)
Half13.11 mi0.68 mi24068+449936+199936+1923426(Top 88%)9593(Top 84%)9593(Top 1177%)
25K15.53 mi2.42 mi24234-16610034-9810034-9824787(Top 93%)10393(Top 91%)10393(Top 1275%)
30K18.64 mi3.11 mi23921+3139873+1619873+16122608(Top 85%)9249(Top 81%)9249(Top 1135%)
20M20.00 mi1.36 mi23818+1039826+479826+4722517(Top 85%)9260(Top 81%)9260(Top 1136%)
21M21.00 mi1.00 mi23971-1539922-969922-9625332(Top 95%)10774(Top 94%)10774(Top 1322%)
35K21.75 mi0.75 mi23923+489903+199903+1922603(Top 85%)9377(Top 82%)9377(Top 1151%)
23M23.00 mi1.25 mi23971-489939-369939-3624305(Top 91%)10289(Top 90%)10289(Top 1262%)
24M24.00 mi1.00 mi23882+899895+449895+4421354(Top 80%)8762(Top 77%)8762(Top 1075%)
40K24.85 mi0.85 mi23844+389884+119884+1122761(Top 85%)9530(Top 83%)9530(Top 1169%)
25.2M25.20 mi0.35 mi23808+369862+229862+2220994(Top 79%)8600(Top 75%)8600(Top 1055%)
Finish26.22 mi1.02 mi23765+439850+129850+1222198(Top 83%)9232(Top 81%)9232(Top 1133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

24073

Females

9931

F55-59

9931

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

24398

Females

10113

F55-59

10113

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

24073

Females

9931

F55-59

9931

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

23969

Females

9887

F55-59

9887

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

23426

Females

9593

F55-59

9593

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

24787

Females

10393

F55-59

10393

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22608

Females

9249

F55-59

9249

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

22517

Females

9260

F55-59

9260

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

25332

Females

10774

F55-59

10774

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22603

Females

9377

F55-59

9377

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

24305

Females

10289

F55-59

10289

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

21354

Females

8762

F55-59

8762

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22761

Females

9530

F55-59

9530

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

20994

Females

8600

F55-59

8600

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22198

Females

9232

F55-59

9232

Passing Analysis

Category:
Athletes Passed
1195
Passed By
1056
Net Change
+139
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23904
5K → 10K81371-290#23904#24194
10K → 15K139106+33#24194#24161
15K → 20K13283+49#24161#24112
20K → Half517+44#24112#24068
Half → 25K52218-166#24068#24234
25K → 30K32411+313#24234#23921
30K → 20M1107+103#23921#23818
20M → 21M8161-153#23818#23971
21M → 35K546+48#23971#23923
35K → 23M1967-48#23923#23971
23M → 24M901+89#23971#23882
24M → 40K5012+38#23882#23844
40K → 25.2M371+36#23844#23808
25.2M → Finish485+43#23808#23765
TOTALS11951056+139
📊

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