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BOSTON MARATHON 2023

Brent Chuma

Bib: 29508•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Male)
#0 / 15176
Top 34%
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
23:42
Rank: #10830
Start → 5K
7:38/mi
23:42 split
10K· 6.21 mi
44:31
Rank: #7531 (+3299)
5K → 10K
6:42/mi
20:49 split
15K· 9.32 mi
1:05:46
Rank: #6821 (+710)
10K → 15K
6:50/mi
21:15 split
20K· 12.43 mi
1:26:48
Rank: #6261 (+560)
15K → 20K
6:46/mi
21:02 split
Half· 13.11 mi
1:31:22
Rank: #6176 (+85)
20K → Half
6:42/mi
4:34 split
25K· 15.53 mi
1:48:10
Rank: #5994 (+182)
Half → 25K
6:56/mi
16:48 split
30K· 18.64 mi
2:10:46
Rank: #5910 (+84)
25K → 30K
7:16/mi
22:36 split
20M
2:21:03
Rank: #5972 (-62)
30K → 20M
7:34/mi
10:17 split
21M
2:29:12
Rank: #6034 (-62)
20M → 21M
8:09/mi
8:09 split
35K· 21.75 mi
2:34:34
Rank: #6003 (+31)
21M → 35K
7:10/mi
5:22 split
23M
2:44:41
Rank: #6167 (-164)
35K → 23M
8:05/mi
10:07 split
24M
2:51:39
Rank: #6045 (+122)
23M → 24M
6:58/mi
6:58 split
40K· 24.85 mi
2:57:32
Rank: #5883 (+162)
24M → 40K
6:53/mi
5:53 split
25.2M
3:00:06
Rank: #5839 (+44)
40K → 25.2M
7:27/mi
2:34 split
Finish· 26.22 mi
3:06:38
Rank: #5619 (+220)
25.2M → Finish
6:25/mi
6:32 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:22
Pace6:58 /mi
2nd Half
Distance13.11 mi
Time1:35:16
Pace7:16 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0223:427:3823:42
7:38
-
10K
6.21 mi12:05:5144:317:1020:49
6:42
-0:56
15K
9.32 mi12:27:061:05:467:0321:15
6:50
+0:08
20K
12.43 mi12:48:081:26:486:5921:02
6:46
-0:04
Half
13.11 mi12:52:421:31:226:584:34
6:42
-0:04
25K
15.53 mi13:09:301:48:106:5816:48
6:56
+0:14
30K
18.64 mi13:32:062:10:467:0122:36
7:16
+0:20
20M
20.00 mi13:42:232:21:037:0310:17
7:34
+0:18
21M
21.00 mi13:50:322:29:127:068:09
8:09
+0:35
35K
21.75 mi13:55:542:34:347:065:22
7:10
-0:59
23M
23.00 mi14:06:012:44:417:1010:07
8:05
+0:55
24M
24.00 mi14:12:592:51:397:096:58
6:58
-1:07
40K
24.85 mi14:18:522:57:327:095:53
6:53
-0:05
25.2M
25.20 mi14:21:263:00:067:092:34
7:27
+0:34
Finish
26.22 mi14:27:583:06:387:076:32
6:25
-1:02

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

6:25 /mi

Average Pace

7:07 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

31:55

17% of race

Time at Steady Pace

1:17:18

41% of race

Time at Slower Pace

1:17:25

41% of race

Average Pace: 7:07 /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 mi11:45:0223:427:3823:42
7:38
#10830
10K
6.21 mi12:05:5144:317:1020:49
6:42
#7531
15K
9.32 mi12:27:061:05:467:0321:15
6:50
#6821
20K
12.43 mi12:48:081:26:486:5921:02
6:46
#6261
Half
13.11 mi12:52:421:31:226:584:34
6:42
#6176
25K
15.53 mi13:09:301:48:106:5816:48
6:56
#5994
30K
18.64 mi13:32:062:10:467:0122:36
7:16
#5910
20M
20.00 mi13:42:232:21:037:0310:17
7:34
#5972
21M
21.00 mi13:50:322:29:127:068:09
8:09
#6034
35K
21.75 mi13:55:542:34:347:065:22
7:10
#6003
23M
23.00 mi14:06:012:44:417:1010:07
8:05
#6167
24M
24.00 mi14:12:592:51:397:096:58
6:58
#6045
40K
24.85 mi14:18:522:57:327:095:53
6:53
#5883
25.2M
25.20 mi14:21:263:00:067:092:34
7:27
#5839
Finish
26.22 mi14:27:583:06:387:076:32
6:25
#5619
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi10830857285725495(Top 21%)5058(Top 33%)5058(Top 96%)
10K6.21 mi3.10 mi7531+32996656+19166656+19164357(Top 16%)4076(Top 27%)4076(Top 77%)
15K9.32 mi3.11 mi6821+7106118+5386118+5385495(Top 21%)5058(Top 33%)5058(Top 96%)
20K12.43 mi3.11 mi6261+5605674+4445674+4444196(Top 16%)3927(Top 26%)3927(Top 74%)
Half13.11 mi0.68 mi6176+855615+595615+594404(Top 17%)4096(Top 27%)4096(Top 78%)
25K15.53 mi2.42 mi5994+1825478+1375478+1375160(Top 19%)4758(Top 31%)4758(Top 90%)
30K18.64 mi3.11 mi5910+845395+835395+835905(Top 22%)5305(Top 35%)5305(Top 100%)
20M20.00 mi1.36 mi5972-625430-355430-357317(Top 27%)6157(Top 41%)6157(Top 116%)
21M21.00 mi1.00 mi6034-625466-365466-368358(Top 31%)6667(Top 44%)6667(Top 126%)
35K21.75 mi0.75 mi6003+315434+325434+326436(Top 24%)5516(Top 36%)5516(Top 104%)
23M23.00 mi1.25 mi6167-1645552-1185552-11810355(Top 39%)7646(Top 50%)7646(Top 145%)
24M24.00 mi1.00 mi6045+1225440+1125440+1124555(Top 17%)4091(Top 27%)4091(Top 77%)
40K24.85 mi0.85 mi5883+1625306+1345306+1343278(Top 12%)2994(Top 20%)2994(Top 57%)
25.2M25.20 mi0.35 mi5839+445269+375269+373733(Top 14%)3325(Top 22%)3325(Top 63%)
Finish26.22 mi1.02 mi5619+2205089+1805089+1802097(Top 8%)1942(Top 13%)1942(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5495

Males

5058

M18-39

5058

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4357

Males

4076

M18-39

4076

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5495

Males

5058

M18-39

5058

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4196

Males

3927

M18-39

3927

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4404

Males

4096

M18-39

4096

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5160

Males

4758

M18-39

4758

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5905

Males

5305

M18-39

5305

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7317

Males

6157

M18-39

6157

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8358

Males

6667

M18-39

6667

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6436

Males

5516

M18-39

5516

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10355

Males

7646

M18-39

7646

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4555

Males

4091

M18-39

4091

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3278

Males

2994

M18-39

2994

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3733

Males

3325

M18-39

3325

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2097

Males

1942

M18-39

1942

Passing Analysis

Category:
Athletes Passed
5728*
Passed By
517
Net Change
+5211
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10830
5K → 10K3300*1+3299#10830#7531
10K → 15K7133+710#7531#6821
15K → 20K5611+560#6821#6261
20K → Half850+85#6261#6176
Half → 25K19311+182#6176#5994
25K → 30K16783+84#5994#5910
30K → 20M40102-62#5910#5972
20M → 21M3597-62#5972#6034
21M → 35K5019+31#6034#6003
35K → 23M25189-164#6003#6167
23M → 24M1308+122#6167#6045
24M → 40K1620+162#6045#5883
40K → 25.2M462+44#5883#5839
25.2M → Finish2211+220#5839#5619
TOTALS5728*517+5211

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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