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BOSTON MARATHON 2023

Iwona Swieczkowski

Bib: 23708•F

NY

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

Start
0:00:00
Race begins
5K· 3.11 mi
26:56
Rank: #18697
Start → 5K
26:56 | 8:40/mi
10K· 6.21 mi
54:28
Rank: #19489 (-792)
5K → 10K
27:32 | 8:52/mi
15K· 9.32 mi
1:23:12
Rank: #20247 (-758)
10K → 15K
28:44 | 9:15/mi
20K· 12.43 mi
1:52:38
Rank: #20632 (-385)
15K → 20K
29:26 | 9:28/mi
Half· 13.11 mi
1:58:58
Rank: #20668 (-36)
20K → Half
6:20 | 9:17/mi
25K· 15.53 mi
2:22:28
Rank: #20841 (-173)
Half → 25K
23:30 | 9:42/mi
30K· 18.64 mi
2:53:29
Rank: #20847 (-6)
25K → 30K
31:01 | 9:59/mi
20M
3:07:16
Rank: #20841 (+6)
30K → 20M
13:47 | 10:09/mi
21M
3:18:13
Rank: #20825 (+16)
20M → 21M
10:57 | 10:57/mi
35K· 21.75 mi
3:25:25
Rank: #20785 (+40)
21M → 35K
7:12 | 9:37/mi
23M
3:38:28
Rank: #20801 (-16)
35K → 23M
13:03 | 10:25/mi
24M
3:48:32
Rank: #20792 (+9)
23M → 24M
10:04 | 10:04/mi
40K· 24.85 mi
3:57:10
Rank: #20771 (+21)
24M → 40K
8:38 | 10:06/mi
25.2M
4:00:56
Rank: #20763 (+8)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
4:11:07
Rank: #20784 (-21)
25.2M → Finish
10:11 | 10:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:58
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:12:09
Pace10:05 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0826:568:4026:56
8:40
-
10K
6.21 mi11:49:4054:288:4627:32
8:52
+0:12
15K
9.32 mi12:18:241:23:128:5628:44
9:15
+0:23
20K
12.43 mi12:47:501:52:389:0429:26
9:28
+0:13
Half
13.11 mi12:54:101:58:589:046:20
9:17
-0:11
25K
15.53 mi13:17:402:22:289:1023:30
9:42
+0:25
30K
18.64 mi13:48:412:53:299:1831:01
9:59
+0:17
20M
20.00 mi14:02:283:07:169:2213:47
10:09
+0:10
21M
21.00 mi14:13:253:18:139:2610:57
10:57
+0:48
35K
21.75 mi14:20:373:25:259:277:12
9:37
-1:20
23M
23.00 mi14:33:403:38:289:3013:03
10:25
+0:48
24M
24.00 mi14:43:443:48:329:3110:04
10:04
-0:21
40K
24.85 mi14:52:223:57:109:338:38
10:06
+0:02
25.2M
25.20 mi14:56:084:00:569:343:46
10:55
+0:49
Finish
26.22 mi15:06:194:11:079:3510:11
10:00
-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

8:40 /mi

Average Pace

9:35 /mi

Slowest Pace

10:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:10

50% of race

Time at Steady Pace

1:37:11

39% of race

Time at Slower Pace

27:46

11% of race

Average Pace: 9:35 /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 mi11:22:0826:568:4026:56
8:40
#18697
10K
6.21 mi11:49:4054:288:4627:32
8:52
#19489
15K
9.32 mi12:18:241:23:128:5628:44
9:15
#20247
20K
12.43 mi12:47:501:52:389:0429:26
9:28
#20632
Half
13.11 mi12:54:101:58:589:046:20
9:17
#20668
25K
15.53 mi13:17:402:22:289:1023:30
9:42
#20841
30K
18.64 mi13:48:412:53:299:1831:01
9:59
#20847
20M
20.00 mi14:02:283:07:169:2213:47
10:09
#20841
21M
21.00 mi14:13:253:18:139:2610:57
10:57
#20825
35K
21.75 mi14:20:373:25:259:277:12
9:37
#20785
23M
23.00 mi14:33:403:38:289:3013:03
10:25
#20801
24M
24.00 mi14:43:443:48:329:3110:04
10:04
#20792
40K
24.85 mi14:52:223:57:109:338:38
10:06
#20771
25.2M
25.20 mi14:56:084:00:569:343:46
10:55
#20763
Finish
26.22 mi15:06:194:11:079:3510:11
10:00
#20784
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi186977002700221477(Top 81%)8486(Top 74%)8486(Top 1041%)
10K6.21 mi3.10 mi19489-7927458-4567458-45620243(Top 76%)7841(Top 69%)7841(Top 962%)
15K9.32 mi3.11 mi20247-7587874-4167874-41621477(Top 81%)8486(Top 74%)8486(Top 1041%)
20K12.43 mi3.11 mi20632-3858072-1988072-19821478(Top 81%)8513(Top 75%)8513(Top 1045%)
Half13.11 mi0.68 mi20668-368086-148086-1421468(Top 81%)8497(Top 74%)8497(Top 1043%)
25K15.53 mi2.42 mi20841-1738173-878173-8721431(Top 81%)8523(Top 75%)8523(Top 1046%)
30K18.64 mi3.11 mi20847-68184-118184-1120992(Top 79%)8338(Top 73%)8338(Top 1023%)
20M20.00 mi1.36 mi20841+68204-208204-2020871(Top 78%)8339(Top 73%)8339(Top 1023%)
21M21.00 mi1.00 mi20825+168208-48208-420731(Top 78%)8313(Top 73%)8313(Top 1020%)
35K21.75 mi0.75 mi20785+408199+98199+920247(Top 76%)8085(Top 71%)8085(Top 992%)
23M23.00 mi1.25 mi20801-168218-198218-1921141(Top 79%)8605(Top 75%)8605(Top 1056%)
24M24.00 mi1.00 mi20792+98226-88226-820981(Top 79%)8532(Top 75%)8532(Top 1047%)
40K24.85 mi0.85 mi20771+218224+28224+220246(Top 76%)8190(Top 72%)8190(Top 1005%)
25.2M25.20 mi0.35 mi20763+88223+18223+120305(Top 76%)8218(Top 72%)8218(Top 1008%)
Finish26.22 mi1.02 mi20784-218248-258248-2521750(Top 82%)8983(Top 79%)8983(Top 1102%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21stories
+97ft-345ft

Overall

21477

Females

8486

F55-59

8486

5K→10K

3.1 - 6.2 mi

Top 76%
×5stories
+79ft-138ft

Overall

20243

Females

7841

F55-59

7841

10K→15K

6.2 - 9.3 mi

Top 81%
×3stories
+67ft-78ft

Overall

21477

Females

8486

F55-59

8486

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21478

Females

8513

F55-59

8513

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

21468

Females

8497

F55-59

8497

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21431

Females

8523

F55-59

8523

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

20992

Females

8338

F55-59

8338

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20871

Females

8339

F55-59

8339

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20731

Females

8313

F55-59

8313

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

20247

Females

8085

F55-59

8085

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

21141

Females

8605

F55-59

8605

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

20981

Females

8532

F55-59

8532

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20246

Females

8190

F55-59

8190

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20305

Females

8218

F55-59

8218

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

21750

Females

8983

F55-59

8983

Passing Analysis

Category:
Athletes Passed
818
Passed By
2905
Net Change
-2087
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18697
5K → 10K95887-792#18697#19489
10K → 15K32790-758#19489#20247
15K → 20K71456-385#20247#20632
20K → Half1450-36#20632#20668
Half → 25K53226-173#20668#20841
25K → 30K144150-6#20841#20847
30K → 20M8781+6#20847#20841
20M → 21M6347+16#20841#20825
21M → 35K5919+40#20825#20785
35K → 23M6177-16#20785#20801
23M → 24M4637+9#20801#20792
24M → 40K4827+21#20792#20771
40K → 25.2M2113+8#20771#20763
25.2M → Finish2445-21#20763#20784
TOTALS8182905-2087
📊

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