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BOSTON MARATHON 2024

Natalia Cozza

Bib: 20208•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F45-49)
#0 / 1753
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
8:13/mi
25:33
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
51:34
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:18:24
↑ 67↓ 78
20K· 12.43 mi
9:01/mi
1:46:26
↑ 106↓ 860.1%
Half· 13.11 mi
8:58/mi
1:52:33
↑ 19↓ 370.5%
25K· 15.53 mi
9:51/mi
2:16:25
↑ 66↓ 880.2%
30K· 18.64 mi
10:26/mi
2:48:49
↑ 181↓ 1480.2%
20M
11:16/mi
3:04:07
↑ 64↓ 500.2%
21M
12:13/mi
3:16:20
↑ 106↓ 241.6%
35K· 21.75 mi
11:12/mi
3:24:43
↑ 17↓ 861.7%
23M
11:33/mi
3:39:11
↑ 23↓ 630.6%
24M
10:19/mi
3:49:30
↓ 821.3%
40K· 24.85 mi
11:30/mi
3:59:20
↓ 200.3%
25.2M
14:53/mi
4:04:28
↑ 13↓ 160.2%
Finish· 26.22 mi
11:39/mi
4:16:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:33
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:23:47
Pace10:58 /mi
📊Positive Split: 27.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1425:338:1325:33
8:13
-
10K
6.21 mi11:47:1551:348:1826:01
8:22
+0:09
15K
9.32 mi12:14:051:18:248:2526:50
8:38
+0:16
20K
12.43 mi12:42:071:46:268:3428:02
9:01
+0:23
Half
13.11 mi12:48:141:52:338:356:07
8:58
-0:03
25K
15.53 mi13:12:062:16:258:4723:52
9:51
+0:53
30K
18.64 mi13:44:302:48:499:0332:24
10:26
+0:35
20M
20.00 mi13:59:483:04:079:1215:18
11:16
+0:50
21M
21.00 mi14:12:013:16:209:2112:13
12:13
+0:57
35K
21.75 mi14:20:243:24:439:258:23
11:12
-1:01
23M
23.00 mi14:34:523:39:119:3214:28
11:33
+0:21
24M
24.00 mi14:45:113:49:309:3410:19
10:19
-1:14
40K
24.85 mi14:55:013:59:209:389:50
11:30
+1:11
25.2M
25.20 mi15:00:094:04:289:425:08
14:53
+3:23
Finish
26.22 mi15:12:014:16:209:4711:52
11:39
-3:14

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

8:13 /mi

Average Pace

9:47 /mi

Slowest Pace

14:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:33

44% of race

Time at Steady Pace

1:30:16

35% of race

Time at Slower Pace

53:31

21% of race

Average Pace: 9:47 /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 mi11:21:1425:338:1325:33
8:13
#16192
10K
6.21 mi11:47:1551:348:1826:01
8:22
#16349
15K
9.32 mi12:14:051:18:248:2526:50
8:38
#16571
20K
12.43 mi12:42:071:46:268:3428:02
9:01
#16807
Half
13.11 mi12:48:141:52:338:356:07
8:58
#16866
25K
15.53 mi13:12:062:16:258:4723:52
9:51
#17271
30K
18.64 mi13:44:302:48:499:0332:24
10:26
#17616
20M
20.00 mi13:59:483:04:079:1215:18
11:16
#17913
21M
21.00 mi14:12:013:16:209:2112:13
12:13
#18058
35K
21.75 mi14:20:243:24:439:258:23
11:12
#18163
23M
23.00 mi14:34:523:39:119:3214:28
11:33
#18254
24M
24.00 mi14:45:113:49:309:3410:19
10:19
#18209
40K
24.85 mi14:55:013:59:209:389:50
11:30
#18241
25.2M
25.20 mi15:00:094:04:289:425:08
14:53
#18352
Finish
26.22 mi15:12:014:16:209:4711:52
11:39
#18533
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi161925680568017157(Top 67%)6230(Top 57%)6230(Top 355%)
10K6.21 mi3.10 mi16349-1575775-955775-9516572(Top 65%)5872(Top 54%)5872(Top 335%)
15K9.32 mi3.11 mi16571-2225893-1185893-11817157(Top 67%)6230(Top 57%)6230(Top 355%)
20K12.43 mi3.11 mi16807-2366049-1566049-15617447(Top 68%)6403(Top 59%)6403(Top 365%)
Half13.11 mi0.68 mi16866-596091-426091-4218149(Top 71%)6877(Top 63%)6877(Top 392%)
25K15.53 mi2.42 mi17271-4056352-2616352-26118689(Top 73%)7212(Top 66%)7212(Top 411%)
30K18.64 mi3.11 mi17616-3456605-2536605-25318606(Top 73%)7364(Top 67%)7364(Top 420%)
20M20.00 mi1.36 mi17913-2976814-2096814-20919884(Top 78%)8158(Top 75%)8158(Top 465%)
21M21.00 mi1.00 mi18058-1456916-1026916-10219285(Top 75%)7953(Top 73%)7953(Top 454%)
35K21.75 mi0.75 mi18163-1056989-736989-7320246(Top 79%)8474(Top 78%)8474(Top 483%)
23M23.00 mi1.25 mi18254-917060-717060-7119779(Top 77%)8284(Top 76%)8284(Top 473%)
24M24.00 mi1.00 mi18209+457069-97069-917350(Top 68%)7133(Top 65%)7133(Top 407%)
40K24.85 mi0.85 mi18241-327105-367105-3619337(Top 76%)8179(Top 75%)8179(Top 467%)
25.2M25.20 mi0.35 mi18352-1117167-627167-6222896(Top 90%)9878(Top 90%)9878(Top 563%)
Finish26.22 mi1.02 mi18533-1817299-1327299-13222688(Top 89%)9788(Top 90%)9788(Top 558%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17157

Females

6230

F45-49

6230

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

16572

Females

5872

F45-49

5872

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17157

Females

6230

F45-49

6230

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

17447

Females

6403

F45-49

6403

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18149

Females

6877

F45-49

6877

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

18689

Females

7212

F45-49

7212

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

18606

Females

7364

F45-49

7364

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

19884

Females

8158

F45-49

8158

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

19285

Females

7953

F45-49

7953

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

20246

Females

8474

F45-49

8474

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

19779

Females

8284

F45-49

8284

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

17350

Females

7133

F45-49

7133

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

19337

Females

8179

F45-49

8179

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

22896

Females

9878

F45-49

9878

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

22688

Females

9788

F45-49

9788

Passing Analysis

Category:
Athletes Passed
1261
Passed By
3602
Net Change
-2341
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16192
5K → 10K218375-157#16192#16349
10K → 15K174396-222#16349#16571
15K → 20K186422-236#16571#16807
20K → Half2281-59#16807#16866
Half → 25K99504-405#16866#17271
25K → 30K159504-345#17271#17616
30K → 20M54351-297#17616#17913
20M → 21M55200-145#17913#18058
21M → 35K45150-105#18058#18163
35K → 23M64155-91#18163#18254
23M → 24M8944+45#18254#18209
24M → 40K5082-32#18209#18241
40K → 25.2M16127-111#18241#18352
25.2M → Finish30211-181#18352#18533
TOTALS12613602-2341
📊

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