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BOSTON MARATHON 2023

Silvia Mazy

Bib: 17019•F

MS

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Masters (Masters Women)
#0 / 6539
Top 7%
Division (F40-44)
#0 / 1878
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:56
Rank: #8695
Start → 5K
22:56 | 7:23/mi
10K· 6.21 mi
45:04
Rank: #8147 (+548)
5K → 10K
22:08 | 7:07/mi
15K· 9.32 mi
1:07:59
Rank: #8428 (-281)
10K → 15K
22:55 | 7:23/mi
20K· 12.43 mi
1:31:28
Rank: #8708 (-280)
15K → 20K
23:29 | 7:34/mi
Half· 13.11 mi
1:36:38
Rank: #8796 (-88)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:55:22
Rank: #9035 (-239)
Half → 25K
18:44 | 7:44/mi
30K· 18.64 mi
2:20:20
Rank: #9383 (-348)
25K → 30K
24:58 | 8:02/mi
20M
2:31:24
Rank: #9526 (-143)
30K → 20M
11:04 | 8:09/mi
21M
2:40:12
Rank: #9666 (-140)
20M → 21M
8:48 | 8:48/mi
35K· 21.75 mi
2:46:07
Rank: #9703 (-37)
21M → 35K
5:55 | 7:55/mi
23M
2:56:16
Rank: #9718 (-15)
35K → 23M
10:09 | 8:06/mi
24M
3:04:11
Rank: #9730 (-12)
23M → 24M
7:55 | 7:55/mi
40K· 24.85 mi
3:11:01
Rank: #9716 (+14)
24M → 40K
6:50 | 8:00/mi
25.2M
3:14:07
Rank: #9754 (-38)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:22:20
Rank: #9837 (-83)
25.2M → Finish
8:13 | 8:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:38
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:45:42
Pace8:04 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:3122:567:2322:56
7:23
-
10K
6.21 mi11:35:3945:047:1522:08
7:07
-0:16
15K
9.32 mi11:58:341:07:597:1822:55
7:23
+0:16
20K
12.43 mi12:22:031:31:287:2223:29
7:34
+0:11
Half
13.11 mi12:27:131:36:387:225:10
7:34
0:00
25K
15.53 mi12:45:571:55:227:2618:44
7:44
+0:10
30K
18.64 mi13:10:552:20:207:3224:58
8:02
+0:18
20M
20.00 mi13:21:592:31:247:3411:04
8:09
+0:07
21M
21.00 mi13:30:472:40:127:388:48
8:48
+0:39
35K
21.75 mi13:36:422:46:077:385:55
7:55
-0:53
23M
23.00 mi13:46:512:56:167:4010:09
8:06
+0:11
24M
24.00 mi13:54:463:04:117:407:55
7:55
-0:11
40K
24.85 mi14:01:363:11:017:416:50
8:00
+0:05
25.2M
25.20 mi14:04:423:14:077:423:06
8:59
+0:59
Finish
26.22 mi14:12:553:22:207:438:13
8:04
-0:55

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

7:07 /mi

Average Pace

7:43 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:38

48% of race

Time at Steady Pace

1:33:48

46% of race

Time at Slower Pace

11:54

6% of race

Average Pace: 7:43 /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 mi11:13:3122:567:2322:56
7:23
#8695
10K
6.21 mi11:35:3945:047:1522:08
7:07
#8147
15K
9.32 mi11:58:341:07:597:1822:55
7:23
#8428
20K
12.43 mi12:22:031:31:287:2223:29
7:34
#8708
Half
13.11 mi12:27:131:36:387:225:10
7:34
#8796
25K
15.53 mi12:45:571:55:227:2618:44
7:44
#9035
30K
18.64 mi13:10:552:20:207:3224:58
8:02
#9383
20M
20.00 mi13:21:592:31:247:3411:04
8:09
#9526
21M
21.00 mi13:30:472:40:127:388:48
8:48
#9666
35K
21.75 mi13:36:422:46:077:385:55
7:55
#9703
23M
23.00 mi13:46:512:56:167:4010:09
8:06
#9718
24M
24.00 mi13:54:463:04:117:407:55
7:55
#9730
40K
24.85 mi14:01:363:11:017:416:50
8:00
#9716
25.2M
25.20 mi14:04:423:14:077:423:06
8:59
#9754
Finish
26.22 mi14:12:553:22:207:438:13
8:04
#9837
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi8695127612769156(Top 34%)1508(Top 13%)1508(Top 80%)
10K6.21 mi3.10 mi8147+5481085+1911085+1917597(Top 29%)917(Top 8%)917(Top 49%)
15K9.32 mi3.11 mi8428-2811191-1061191-1069156(Top 34%)1508(Top 13%)1508(Top 80%)
20K12.43 mi3.11 mi8708-2801320-1291320-1299780(Top 37%)1821(Top 16%)1821(Top 97%)
Half13.11 mi0.68 mi8796-881359-391359-3910856(Top 41%)2285(Top 20%)2285(Top 122%)
25K15.53 mi2.42 mi9035-2391458-991458-9910506(Top 39%)2229(Top 20%)2229(Top 119%)
30K18.64 mi3.11 mi9383-3481645-1871645-18711190(Top 42%)2730(Top 24%)2730(Top 145%)
20M20.00 mi1.36 mi9526-1431719-741719-7411306(Top 42%)2880(Top 25%)2880(Top 153%)
21M21.00 mi1.00 mi9666-1401791-721791-7212254(Top 46%)3531(Top 31%)3531(Top 188%)
35K21.75 mi0.75 mi9703-371824-331824-3311462(Top 43%)3102(Top 27%)3102(Top 165%)
23M23.00 mi1.25 mi9718-151870-461870-4610524(Top 40%)2773(Top 24%)2773(Top 148%)
24M24.00 mi1.00 mi9730-121902-321902-3210658(Top 40%)2902(Top 25%)2902(Top 155%)
40K24.85 mi0.85 mi9716+141918-161918-1610012(Top 38%)2649(Top 23%)2649(Top 141%)
25.2M25.20 mi0.35 mi9754-381955-371955-3712475(Top 47%)3934(Top 34%)3934(Top 209%)
Finish26.22 mi1.02 mi9837-832022-672022-6712564(Top 47%)3981(Top 35%)3981(Top 212%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9156

Females

1508

F40-44

1508

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7597

Females

917

F40-44

917

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9156

Females

1508

F40-44

1508

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9780

Females

1821

F40-44

1821

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10856

Females

2285

F40-44

2285

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10506

Females

2229

F40-44

2229

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11190

Females

2730

F40-44

2730

30K→20M

18.6 - 20.0 mi

Top 42%
×5stories
+64ft-50ft

Overall

11306

Females

2880

F40-44

2880

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12254

Females

3531

F40-44

3531

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11462

Females

3102

F40-44

3102

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10524

Females

2773

F40-44

2773

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10658

Females

2902

F40-44

2902

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10012

Females

2649

F40-44

2649

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

12475

Females

3934

F40-44

3934

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12564

Females

3981

F40-44

3981

Passing Analysis

Category:
Athletes Passed
1289*
Passed By
2431
Net Change
-1142
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8695
5K → 10K61668+548#8695#8147
10K → 15K64345-281#8147#8428
15K → 20K60340-280#8428#8708
20K → Half795-88#8708#8796
Half → 25K50289-239#8796#9035
25K → 30K79427-348#9035#9383
30K → 20M51194-143#9383#9526
20M → 21M42182-140#9526#9666
21M → 35K2562-37#9666#9703
35K → 23M92107-15#9703#9718
23M → 24M6072-12#9718#9730
24M → 40K69*55+14#9730#9716
40K → 25.2M2563-38#9716#9754
25.2M → Finish49*132-83#9754#9837
TOTALS1289*2431-1142

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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