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BOSTON MARATHON 2023

James Gwiazda

Bib: 25690•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:55
Rank: #22459
Start → 5K
29:55 | 9:38/mi
10K· 6.21 mi
1:00:16
Rank: #22900 (-441)
5K → 10K
30:21 | 9:46/mi
15K· 9.32 mi
1:31:21
Rank: #23153 (-253)
10K → 15K
31:05 | 10:00/mi
20K· 12.43 mi
2:04:23
Rank: #23433 (-280)
15K → 20K
33:02 | 10:38/mi
Half· 13.11 mi
2:11:24
Rank: #23462 (-29)
20K → Half
7:01 | 10:17/mi
25K· 15.53 mi
2:38:27
Rank: #23602 (-140)
Half → 25K
27:03 | 11:09/mi
30K· 18.64 mi
3:13:39
Rank: #23595 (+7)
25K → 30K
35:12 | 11:20/mi
20M
3:30:11
Rank: #23666 (-71)
30K → 20M
16:32 | 12:10/mi
21M
3:42:19
Rank: #23636 (+30)
20M → 21M
12:08 | 12:08/mi
35K· 21.75 mi
3:50:30
Rank: #23622 (+14)
21M → 35K
8:11 | 10:56/mi
23M
4:04:51
Rank: #23613 (+9)
35K → 23M
14:21 | 11:28/mi
24M
4:15:47
Rank: #23590 (+23)
23M → 24M
10:56 | 10:56/mi
40K· 24.85 mi
4:25:15
Rank: #23568 (+22)
24M → 40K
9:28 | 11:04/mi
25.2M
4:29:23
Rank: #23560 (+8)
40K → 25.2M
4:08 | 11:59/mi
Finish· 26.22 mi
4:39:51
Rank: #23522 (+38)
25.2M → Finish
10:28 | 10:16/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:24
Pace10:01 /mi
2nd Half
Distance13.11 mi
Time2:28:27
Pace11:19 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:3029:559:3829:55
9:38
-
10K
6.21 mi12:15:511:00:169:4230:21
9:46
+0:08
15K
9.32 mi12:46:561:31:219:4831:05
10:00
+0:14
20K
12.43 mi13:19:582:04:2310:0133:02
10:38
+0:38
Half
13.11 mi13:26:592:11:2410:017:01
10:17
-0:21
25K
15.53 mi13:54:022:38:2710:1227:03
11:09
+0:52
30K
18.64 mi14:29:143:13:3910:2335:12
11:20
+0:11
20M
20.00 mi14:45:463:30:1110:3116:32
12:10
+0:50
21M
21.00 mi14:57:543:42:1910:3512:08
12:08
-0:02
35K
21.75 mi15:06:053:50:3010:368:11
10:56
-1:12
23M
23.00 mi15:20:264:04:5110:3914:21
11:28
+0:32
24M
24.00 mi15:31:224:15:4710:3910:56
10:56
-0:32
40K
24.85 mi15:40:504:25:1510:409:28
11:04
+0:08
25.2M
25.20 mi15:44:584:29:2310:414:08
11:59
+0:55
Finish
26.22 mi15:55:264:39:5110:4110:28
10:16
-1:43

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

9:38 /mi

Average Pace

10:41 /mi

Slowest Pace

12:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:50

39% of race

Time at Steady Pace

1:28:40

32% of race

Time at Slower Pace

1:22:21

29% of race

Average Pace: 10:40 /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 mi11:45:3029:559:3829:55
9:38
#22459
10K
6.21 mi12:15:511:00:169:4230:21
9:46
#22900
15K
9.32 mi12:46:561:31:219:4831:05
10:00
#23153
20K
12.43 mi13:19:582:04:2310:0133:02
10:38
#23433
Half
13.11 mi13:26:592:11:2410:017:01
10:17
#23462
25K
15.53 mi13:54:022:38:2710:1227:03
11:09
#23602
30K
18.64 mi14:29:143:13:3910:2335:12
11:20
#23595
20M
20.00 mi14:45:463:30:1110:3116:32
12:10
#23666
21M
21.00 mi14:57:543:42:1910:3512:08
12:08
#23636
35K
21.75 mi15:06:053:50:3010:368:11
10:56
#23622
23M
23.00 mi15:20:264:04:5110:3914:21
11:28
#23613
24M
24.00 mi15:31:224:15:4710:3910:56
10:56
#23590
40K
24.85 mi15:40:504:25:1510:409:28
11:04
#23568
25.2M
25.20 mi15:44:584:29:2310:414:08
11:59
#23560
Finish
26.22 mi15:55:264:39:5110:4110:28
10:16
#23522
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22459133271332723507(Top 88%)13874(Top 91%)13874(Top 616%)
10K6.21 mi3.10 mi22900-44113576-24913576-24923208(Top 87%)13737(Top 91%)13737(Top 610%)
15K9.32 mi3.11 mi23153-25313701-12513701-12523507(Top 88%)13874(Top 91%)13874(Top 616%)
20K12.43 mi3.11 mi23433-28013843-14213843-14224065(Top 90%)14096(Top 93%)14096(Top 626%)
Half13.11 mi0.68 mi23462-2913856-1313856-1323809(Top 89%)13976(Top 92%)13976(Top 621%)
25K15.53 mi2.42 mi23602-14013905-4913905-4924201(Top 91%)14120(Top 93%)14120(Top 627%)
30K18.64 mi3.11 mi23595+713879+2613879+2623617(Top 89%)13808(Top 91%)13808(Top 613%)
20M20.00 mi1.36 mi23666-7113897-1813897-1824395(Top 92%)14088(Top 93%)14088(Top 626%)
21M21.00 mi1.00 mi23636+3013877+2013877+2022943(Top 86%)13401(Top 88%)13401(Top 595%)
35K21.75 mi0.75 mi23622+1413868+913868+923190(Top 87%)13477(Top 89%)13477(Top 598%)
23M23.00 mi1.25 mi23613+913858+1013858+1023181(Top 87%)13476(Top 89%)13476(Top 598%)
24M24.00 mi1.00 mi23590+2313836+2213836+2222920(Top 86%)13308(Top 88%)13308(Top 591%)
40K24.85 mi0.85 mi23568+2213820+1613820+1622499(Top 85%)13082(Top 86%)13082(Top 581%)
25.2M25.20 mi0.35 mi23560+813810+1013810+1022463(Top 84%)13065(Top 86%)13065(Top 580%)
Finish26.22 mi1.02 mi23522+3813782+2813782+2822460(Top 84%)13079(Top 86%)13079(Top 581%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23507

Males

13874

M45-49

13874

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23208

Males

13737

M45-49

13737

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23507

Males

13874

M45-49

13874

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

24065

Males

14096

M45-49

14096

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23809

Males

13976

M45-49

13976

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

24201

Males

14120

M45-49

14120

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23617

Males

13808

M45-49

13808

30K→20M

18.6 - 20.0 mi

Top 92%
×5stories
+64ft-50ft

Overall

24395

Males

14088

M45-49

14088

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

22943

Males

13401

M45-49

13401

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

23190

Males

13477

M45-49

13477

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

23181

Males

13476

M45-49

13476

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

22920

Males

13308

M45-49

13308

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22499

Males

13082

M45-49

13082

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22463

Males

13065

M45-49

13065

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

22460

Males

13079

M45-49

13079

Passing Analysis

Category:
Athletes Passed
679
Passed By
1742
Net Change
-1063
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22459
5K → 10K86527-441#22459#22900
10K → 15K62315-253#22900#23153
15K → 20K45325-280#23153#23433
20K → Half1645-29#23433#23462
Half → 25K46186-140#23462#23602
25K → 30K107100+7#23602#23595
30K → 20M34105-71#23595#23666
20M → 21M5424+30#23666#23636
21M → 35K3117+14#23636#23622
35K → 23M4940+9#23622#23613
23M → 24M4421+23#23613#23590
24M → 40K3311+22#23590#23568
40K → 25.2M1911+8#23568#23560
25.2M → Finish5315+38#23560#23522
TOTALS6791742-1063
📊

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