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BOSTON MARATHON 2023

Jerry Swieczkowski

Bib: 10930•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 23%
Gender (Male)
#0 / 15176
Top 36%
Masters (Masters Men)
#0 / 9891
Top 22%
Division (M50-54)
#0 / 2052
Top 16%
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
7:17/mi
22:37
↑ 97↓ 3451.5%
10K· 6.21 mi
6:57/mi
44:12
↑ 79↓ 1380.4%
15K· 9.32 mi
6:59/mi
1:05:54
↑ 67↓ 78
20K· 12.43 mi
7:05/mi
1:27:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:02/mi
1:32:41
↑ 19↓ 370.5%
25K· 15.53 mi
7:11/mi
1:50:06
↑ 66↓ 880.2%
30K· 18.64 mi
7:15/mi
2:12:39
↑ 181↓ 1480.2%
20M
7:22/mi
2:22:39
↑ 64↓ 500.2%
21M
7:39/mi
2:30:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:32/mi
2:35:56
↑ 17↓ 861.7%
23M
7:18/mi
2:45:05
↑ 23↓ 630.6%
24M
7:12/mi
2:52:17
↓ 821.3%
40K· 24.85 mi
7:27/mi
2:58:39
↓ 200.3%
25.2M
7:58/mi
3:01:24
↑ 13↓ 160.2%
Finish· 26.22 mi
7:11/mi
3:08:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:41
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:36:02
Pace7:20 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5922:377:1722:37
7:17
-
10K
6.21 mi11:10:3444:127:0721:35
6:57
-0:20
15K
9.32 mi11:32:161:05:547:0421:42
6:59
+0:02
20K
12.43 mi11:54:151:27:537:0421:59
7:05
+0:06
Half
13.11 mi11:59:031:32:417:044:48
7:02
-0:03
25K
15.53 mi12:16:281:50:067:0517:25
7:11
+0:09
30K
18.64 mi12:39:012:12:397:0722:33
7:15
+0:04
20M
20.00 mi12:49:012:22:397:0810:00
7:22
+0:07
21M
21.00 mi12:56:402:30:187:097:39
7:39
+0:17
35K
21.75 mi13:02:182:35:567:105:38
7:32
-0:07
23M
23.00 mi13:11:272:45:057:119:09
7:18
-0:14
24M
24.00 mi13:18:392:52:177:117:12
7:12
-0:06
40K
24.85 mi13:25:012:58:397:116:22
7:27
+0:15
25.2M
25.20 mi13:27:463:01:247:122:45
7:58
+0:31
Finish
26.22 mi13:35:053:08:437:127:19
7:11
-0:47

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

6:57 /mi

Average Pace

7:12 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:19

94% of race

Time at Steady Pace

10:24

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:12 /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 mi10:48:5922:377:1722:37
7:17
#7972
10K
6.21 mi11:10:3444:127:0721:35
6:57
#7186
15K
9.32 mi11:32:161:05:547:0421:42
6:59
#6905
20K
12.43 mi11:54:151:27:537:0421:59
7:05
#6759
Half
13.11 mi11:59:031:32:417:044:48
7:02
#6761
25K
15.53 mi12:16:281:50:067:0517:25
7:11
#6711
30K
18.64 mi12:39:012:12:397:0722:33
7:15
#6487
20M
20.00 mi12:49:012:22:397:0810:00
7:22
#6423
21M
21.00 mi12:56:402:30:187:097:39
7:39
#6329
35K
21.75 mi13:02:182:35:567:105:38
7:32
#6372
23M
23.00 mi13:11:272:45:057:119:09
7:18
#6261
24M
24.00 mi13:18:392:52:177:117:12
7:12
#6185
40K
24.85 mi13:25:012:58:397:116:22
7:27
#6157
25.2M
25.20 mi13:27:463:01:247:122:45
7:58
#6139
Finish
26.22 mi13:35:053:08:437:127:19
7:11
#6116
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi7972695569556457(Top 24%)5821(Top 38%)5821(Top 284%)
10K6.21 mi3.10 mi7186+7866394+5616394+5616458(Top 24%)5820(Top 38%)5820(Top 284%)
15K9.32 mi3.11 mi6905+2816183+2116183+2116457(Top 24%)5821(Top 38%)5821(Top 284%)
20K12.43 mi3.11 mi6759+1466065+1186065+1186417(Top 24%)5781(Top 38%)5781(Top 282%)
Half13.11 mi0.68 mi6761-26071-66071-66711(Top 25%)6018(Top 40%)6018(Top 293%)
25K15.53 mi2.42 mi6711+506018+536018+536572(Top 25%)5842(Top 38%)5842(Top 285%)
30K18.64 mi3.11 mi6487+2245830+1885830+1885812(Top 22%)5233(Top 34%)5233(Top 255%)
20M20.00 mi1.36 mi6423+645774+565774+565960(Top 22%)5260(Top 35%)5260(Top 256%)
21M21.00 mi1.00 mi6329+945693+815693+815364(Top 20%)4736(Top 31%)4736(Top 231%)
35K21.75 mi0.75 mi6372-435718-255718-258671(Top 33%)6888(Top 45%)6888(Top 336%)
23M23.00 mi1.25 mi6261+1115622+965622+965351(Top 20%)4726(Top 31%)4726(Top 230%)
24M24.00 mi1.00 mi6185+765550+725550+725742(Top 22%)4935(Top 33%)4935(Top 240%)
40K24.85 mi0.85 mi6157+285518+325518+326340(Top 24%)5239(Top 35%)5239(Top 255%)
25.2M25.20 mi0.35 mi6139+185499+195499+196292(Top 24%)5128(Top 34%)5128(Top 250%)
Finish26.22 mi1.02 mi6116+235466+335466+336268(Top 24%)5107(Top 34%)5107(Top 249%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6457

Males

5821

M50-54

5821

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6458

Males

5820

M50-54

5820

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6457

Males

5821

M50-54

5821

15K→20K

9.3 - 12.4 mi

Top 24%
×5story building
+106ft-86ft

Overall

6417

Males

5781

M50-54

5781

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

6711

Males

6018

M50-54

6018

Half→25K

13.1 - 15.5 mi

Top 25%
×4story building
+66ft-88ft

Overall

6572

Males

5842

M50-54

5842

25K→30K

15.5 - 18.6 mi

Top 22%
×9story building
+181ft-148ft

Overall

5812

Males

5233

M50-54

5233

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5960

Males

5260

M50-54

5260

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5364

Males

4736

M50-54

4736

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

8671

Males

6888

M50-54

6888

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5351

Males

4726

M50-54

4726

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

5742

Males

4935

M50-54

4935

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6340

Males

5239

M50-54

5239

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6292

Males

5128

M50-54

5128

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6268

Males

5107

M50-54

5107

Passing Analysis

Category:
Athletes Passed
2258
Passed By
402
Net Change
+1856
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7972
5K → 10K80822+786#7972#7186
10K → 15K31938+281#7186#6905
15K → 20K17630+146#6905#6759
20K → Half1719-2#6759#6761
Half → 25K10252+50#6761#6711
25K → 30K24218+224#6711#6487
30K → 20M9228+64#6487#6423
20M → 21M10915+94#6423#6329
21M → 35K2164-43#6329#6372
35K → 23M12110+111#6372#6261
23M → 24M10125+76#6261#6185
24M → 40K6234+28#6185#6157
40K → 25.2M3012+18#6157#6139
25.2M → Finish5835+23#6139#6116
TOTALS2258402+1856
📊

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