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BOSTON MARATHON 2023

Bradley Rzewnicki

Bib: 4456•M

OR

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 26%
Gender (Male)
#0 / 15176
Top 40%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #2589
Start → 5K
20:22 | 6:33/mi
10K· 6.21 mi
40:05
Rank: #2242 (+347)
5K → 10K
19:43 | 6:21/mi
15K· 9.32 mi
59:55
Rank: #2145 (+97)
10K → 15K
19:50 | 6:23/mi
20K· 12.43 mi
1:19:55
Rank: #2094 (+51)
15K → 20K
20:00 | 6:26/mi
Half· 13.11 mi
1:24:16
Rank: #2087 (+7)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:40:20
Rank: #2196 (-109)
Half → 25K
16:04 | 6:38/mi
30K· 18.64 mi
2:02:23
Rank: #2547 (-351)
25K → 30K
22:03 | 7:06/mi
20M
2:15:23
Rank: #3868 (-1321)
30K → 20M
13:00 | 9:34/mi
21M
2:24:57
Rank: #4753 (-885)
20M → 21M
9:34 | 9:34/mi
35K· 21.75 mi
2:31:47
Rank: #5260 (-507)
21M → 35K
6:50 | 9:08/mi
23M
2:43:43
Rank: #5917 (-657)
35K → 23M
11:56 | 9:32/mi
24M
2:53:51
Rank: #6596 (-679)
23M → 24M
10:08 | 10:08/mi
40K· 24.85 mi
3:01:11
Rank: #6784 (-188)
24M → 40K
7:20 | 8:35/mi
25.2M
3:04:34
Rank: #6921 (-137)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:12:03
Rank: #6917 (+4)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:16
Pace6:26 /mi
2nd Half
Distance13.11 mi
Time1:47:47
Pace8:13 /mi
📊Positive Split: 27.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1120:226:3320:22
6:33
-
10K
6.21 mi10:41:5440:056:2719:43
6:21
-0:12
15K
9.32 mi11:01:4459:556:2619:50
6:23
+0:02
20K
12.43 mi11:21:441:19:556:2620:00
6:26
+0:03
Half
13.11 mi11:26:051:24:166:264:21
6:23
-0:03
25K
15.53 mi11:42:091:40:206:2816:04
6:38
+0:15
30K
18.64 mi12:04:122:02:236:3422:03
7:06
+0:28
20M
20.00 mi12:17:122:15:236:4613:00
9:34
+2:28
21M
21.00 mi12:26:462:24:576:549:34
9:34
0:00
35K
21.75 mi12:33:362:31:476:596:50
9:08
-0:26
23M
23.00 mi12:45:322:43:437:0711:56
9:32
+0:24
24M
24.00 mi12:55:402:53:517:1510:08
10:08
+0:36
40K
24.85 mi13:03:003:01:117:177:20
8:35
-1:33
25.2M
25.20 mi13:06:233:04:347:193:23
9:49
+1:14
Finish
26.22 mi13:13:523:12:037:207:29
7:21
-2:28

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

6:21 /mi

Average Pace

7:20 /mi

Slowest Pace

10:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:16

44% of race

Time at Steady Pace

45:36

24% of race

Time at Slower Pace

1:02:11

32% of race

Average Pace: 7:19 /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 mi10:22:1120:226:3320:22
6:33
#2589
10K
6.21 mi10:41:5440:056:2719:43
6:21
#2242
15K
9.32 mi11:01:4459:556:2619:50
6:23
#2145
20K
12.43 mi11:21:441:19:556:2620:00
6:26
#2094
Half
13.11 mi11:26:051:24:166:264:21
6:23
#2087
25K
15.53 mi11:42:091:40:206:2816:04
6:38
#2196
30K
18.64 mi12:04:122:02:236:3422:03
7:06
#2547
20M
20.00 mi12:17:122:15:236:4613:00
9:34
#3868
21M
21.00 mi12:26:462:24:576:549:34
9:34
#4753
35K
21.75 mi12:33:362:31:476:596:50
9:08
#5260
23M
23.00 mi12:45:322:43:437:0711:56
9:32
#5917
24M
24.00 mi12:55:402:53:517:1510:08
10:08
#6596
40K
24.85 mi13:03:003:01:117:177:20
8:35
#6784
25.2M
25.20 mi13:06:233:04:347:193:23
9:49
#6921
Finish
26.22 mi13:13:523:12:037:207:29
7:21
#6917
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2589246824682018(Top 8%)1933(Top 13%)1933(Top 37%)
10K6.21 mi3.10 mi2242+3472144+3242144+3241975(Top 7%)1892(Top 12%)1892(Top 36%)
15K9.32 mi3.11 mi2145+972057+872057+872018(Top 8%)1933(Top 13%)1933(Top 37%)
20K12.43 mi3.11 mi2094+512006+512006+511989(Top 7%)1910(Top 13%)1910(Top 36%)
Half13.11 mi0.68 mi2087+71999+71999+72160(Top 8%)2076(Top 14%)2076(Top 39%)
25K15.53 mi2.42 mi2196-1092106-1072106-1072894(Top 11%)2765(Top 18%)2765(Top 52%)
30K18.64 mi3.11 mi2547-3512435-3292435-3294925(Top 18%)4533(Top 30%)4533(Top 86%)
20M20.00 mi1.36 mi3868-13213643-12083643-120819131(Top 72%)11739(Top 77%)11739(Top 222%)
21M21.00 mi1.00 mi4753-8854425-7824425-78216247(Top 61%)10455(Top 69%)10455(Top 198%)
35K21.75 mi0.75 mi5260-5074841-4164841-41618428(Top 69%)11329(Top 75%)11329(Top 214%)
23M23.00 mi1.25 mi5917-6575360-5195360-51918425(Top 69%)11308(Top 75%)11308(Top 214%)
24M24.00 mi1.00 mi6596-6795849-4895849-48921139(Top 79%)12480(Top 82%)12480(Top 236%)
40K24.85 mi0.85 mi6784-1885964-1155964-11513773(Top 52%)9126(Top 60%)9126(Top 173%)
25.2M25.20 mi0.35 mi6921-1376046-826046-8216481(Top 62%)10293(Top 68%)10293(Top 195%)
Finish26.22 mi1.02 mi6917+46025+216025+217384(Top 28%)5794(Top 38%)5794(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2018

Males

1933

M18-39

1933

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1975

Males

1892

M18-39

1892

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2018

Males

1933

M18-39

1933

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1989

Males

1910

M18-39

1910

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2160

Males

2076

M18-39

2076

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

2894

Males

2765

M18-39

2765

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4925

Males

4533

M18-39

4533

30K→20M

18.6 - 20.0 mi

Top 72%
×5stories
+64ft-50ft

Overall

19131

Males

11739

M18-39

11739

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

16247

Males

10455

M18-39

10455

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

18428

Males

11329

M18-39

11329

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18425

Males

11308

M18-39

11308

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

21139

Males

12480

M18-39

12480

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13773

Males

9126

M18-39

9126

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16481

Males

10293

M18-39

10293

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7384

Males

5794

M18-39

5794

Passing Analysis

Category:
Athletes Passed
735
Passed By
5063
Net Change
-4328
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2589
5K → 10K36922+347#2589#2242
10K → 15K12932+97#2242#2145
15K → 20K8635+51#2145#2094
20K → Half169+7#2094#2087
Half → 25K17126-109#2087#2196
25K → 30K12363-351#2196#2547
30K → 20M01321-1321#2547#3868
20M → 21M3888-885#3868#4753
21M → 35K4511-507#4753#5260
35K → 23M7664-657#5260#5917
23M → 24M4683-679#5917#6596
24M → 40K21209-188#6596#6784
40K → 25.2M8145-137#6784#6921
25.2M → Finish5955+4#6921#6917
TOTALS7355063-4328
📊

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