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BOSTON MARATHON 2023

Marketa Ith

Bib: 21183•F

AK

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 48%
Division (F50-54)
#0 / 1207
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:42
Rank: #15974
Start → 5K
25:42 | 8:16/mi
10K· 6.21 mi
51:27
Rank: #16371 (-397)
5K → 10K
25:45 | 8:17/mi
15K· 9.32 mi
1:17:39
Rank: #16736 (-365)
10K → 15K
26:12 | 8:26/mi
20K· 12.43 mi
1:44:15
Rank: #16854 (-118)
15K → 20K
26:36 | 8:34/mi
Half· 13.11 mi
1:49:58
Rank: #16866 (-12)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:11:26
Rank: #17091 (-225)
Half → 25K
21:28 | 8:51/mi
30K· 18.64 mi
2:39:38
Rank: #17141 (-50)
25K → 30K
28:12 | 9:05/mi
20M
2:51:54
Rank: #17098 (+43)
30K → 20M
12:16 | 9:02/mi
21M
3:02:18
Rank: #17277 (-179)
20M → 21M
10:24 | 10:24/mi
35K· 21.75 mi
3:08:53
Rank: #17254 (+23)
21M → 35K
6:35 | 8:48/mi
23M
3:20:22
Rank: #17248 (+6)
35K → 23M
11:29 | 9:10/mi
24M
3:30:59
Rank: #17657 (-409)
23M → 24M
10:37 | 10:37/mi
40K· 24.85 mi
3:39:00
Rank: #17683 (-26)
24M → 40K
8:01 | 9:23/mi
25.2M
3:42:19
Rank: #17657 (+26)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:51:03
Rank: #17574 (+83)
25.2M → Finish
8:44 | 8:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:58
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:01:05
Pace9:14 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2125:428:1625:42
8:16
-
10K
6.21 mi11:44:0651:278:1725:45
8:17
+0:01
15K
9.32 mi12:10:181:17:398:2026:12
8:26
+0:09
20K
12.43 mi12:36:541:44:158:2326:36
8:34
+0:08
Half
13.11 mi12:42:371:49:588:235:43
8:23
-0:11
25K
15.53 mi13:04:052:11:268:2821:28
8:51
+0:28
30K
18.64 mi13:32:172:39:388:3428:12
9:05
+0:14
20M
20.00 mi13:44:332:51:548:3612:16
9:02
-0:03
21M
21.00 mi13:54:573:02:188:4110:24
10:24
+1:22
35K
21.75 mi14:01:323:08:538:416:35
8:48
-1:36
23M
23.00 mi14:13:013:20:228:4311:29
9:10
+0:22
24M
24.00 mi14:23:383:30:598:4710:37
10:37
+1:27
40K
24.85 mi14:31:393:39:008:498:01
9:23
-1:14
25.2M
25.20 mi14:34:583:42:198:493:19
9:37
+0:14
Finish
26.22 mi14:43:423:51:038:498:44
8:34
-1:03

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

8:16 /mi

Average Pace

8:49 /mi

Slowest Pace

10:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:22

36% of race

Time at Steady Pace

1:55:20

50% of race

Time at Slower Pace

32:21

14% of race

Average Pace: 8:49 /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 mi11:18:2125:428:1625:42
8:16
#15974
10K
6.21 mi11:44:0651:278:1725:45
8:17
#16371
15K
9.32 mi12:10:181:17:398:2026:12
8:26
#16736
20K
12.43 mi12:36:541:44:158:2326:36
8:34
#16854
Half
13.11 mi12:42:371:49:588:235:43
8:23
#16866
25K
15.53 mi13:04:052:11:268:2821:28
8:51
#17091
30K
18.64 mi13:32:172:39:388:3428:12
9:05
#17141
20M
20.00 mi13:44:332:51:548:3612:16
9:02
#17098
21M
21.00 mi13:54:573:02:188:4110:24
10:24
#17277
35K
21.75 mi14:01:323:08:538:416:35
8:48
#17254
23M
23.00 mi14:13:013:20:228:4311:29
9:10
#17248
24M
24.00 mi14:23:383:30:598:4710:37
10:37
#17657
40K
24.85 mi14:31:393:39:008:498:01
9:23
#17683
25.2M
25.20 mi14:34:583:42:198:493:19
9:37
#17657
Finish
26.22 mi14:43:423:51:038:498:44
8:34
#17574
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi159745264526417369(Top 65%)6141(Top 54%)6141(Top 509%)
10K6.21 mi3.10 mi16371-3975509-2455509-24516868(Top 63%)5791(Top 51%)5791(Top 480%)
15K9.32 mi3.11 mi16736-3655755-2465755-24617369(Top 65%)6141(Top 54%)6141(Top 509%)
20K12.43 mi3.11 mi16854-1185838-835838-8317256(Top 65%)6079(Top 53%)6079(Top 504%)
Half13.11 mi0.68 mi16866-125842-45842-417068(Top 64%)5947(Top 52%)5947(Top 493%)
25K15.53 mi2.42 mi17091-2255999-1575999-15718246(Top 69%)6690(Top 59%)6690(Top 554%)
30K18.64 mi3.11 mi17141-506045-466045-4617582(Top 66%)6403(Top 56%)6403(Top 530%)
20M20.00 mi1.36 mi17098+436029+166029+1616711(Top 63%)5984(Top 52%)5984(Top 496%)
21M21.00 mi1.00 mi17277-1796161-1326161-13219275(Top 72%)7499(Top 66%)7499(Top 621%)
35K21.75 mi0.75 mi17254+236152+96152+916967(Top 64%)6261(Top 55%)6261(Top 519%)
23M23.00 mi1.25 mi17248+66171-196171-1916925(Top 64%)6251(Top 55%)6251(Top 518%)
24M24.00 mi1.00 mi17657-4096428-2576428-25722272(Top 84%)9244(Top 81%)9244(Top 766%)
40K24.85 mi0.85 mi17683-266450-226450-2217863(Top 67%)6871(Top 60%)6871(Top 569%)
25.2M25.20 mi0.35 mi17657+266436+146436+1415810(Top 59%)5766(Top 50%)5766(Top 478%)
Finish26.22 mi1.02 mi17574+836401+356401+3515855(Top 60%)5734(Top 50%)5734(Top 475%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

17369

Females

6141

F50-54

6141

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

16868

Females

5791

F50-54

5791

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

17369

Females

6141

F50-54

6141

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

17256

Females

6079

F50-54

6079

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

17068

Females

5947

F50-54

5947

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

18246

Females

6690

F50-54

6690

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17582

Females

6403

F50-54

6403

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16711

Females

5984

F50-54

5984

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

19275

Females

7499

F50-54

7499

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

16967

Females

6261

F50-54

6261

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

16925

Females

6251

F50-54

6251

23M→24M

23.0 - 24.0 mi

Top 84%
×6stories
+12ft-82ft

Overall

22272

Females

9244

F50-54

9244

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17863

Females

6871

F50-54

6871

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15810

Females

5766

F50-54

5766

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

15855

Females

5734

F50-54

5734

Passing Analysis

Category:
Athletes Passed
1101
Passed By
2701
Net Change
-1600
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15974
5K → 10K146543-397#15974#16371
10K → 15K92457-365#16371#16736
15K → 20K137255-118#16736#16854
20K → Half2335-12#16854#16866
Half → 25K61286-225#16866#17091
25K → 30K163213-50#17091#17141
30K → 20M9047+43#17141#17098
20M → 21M44223-179#17098#17277
21M → 35K5633+23#17277#17254
35K → 23M8175+6#17254#17248
23M → 24M12421-409#17248#17657
24M → 40K4470-26#17657#17683
40K → 25.2M4216+26#17683#17657
25.2M → Finish11027+83#17657#17574
TOTALS11012701-1600
📊

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