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BOSTON MARATHON 2023

David Bell

Bib: 25509•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
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
28:20
Rank: #20928
Start → 5K
9:07/mi
28:20 split
10K· 6.21 mi
53:34
Rank: #18630 (+2298)
5K → 10K
8:07/mi
25:14 split
15K· 9.32 mi
1:18:14
Rank: #17155 (+1475)
10K → 15K
7:56/mi
24:40 split
20K· 12.43 mi
1:43:20
Rank: #16396 (+759)
15K → 20K
8:05/mi
25:06 split
Half· 13.11 mi
1:48:31
Rank: #16114 (+282)
20K → Half
7:36/mi
5:11 split
25K· 15.53 mi
2:10:56
Rank: #16910 (-796)
Half → 25K
9:15/mi
22:25 split
30K· 18.64 mi
2:38:17
Rank: #16720 (+190)
25K → 30K
8:48/mi
27:21 split
20M
2:50:02
Rank: #16543 (+177)
30K → 20M
8:39/mi
11:45 split
21M
2:59:16
Rank: #16405 (+138)
20M → 21M
9:14/mi
9:14 split
35K· 21.75 mi
3:06:40
Rank: #16662 (-257)
21M → 35K
9:53/mi
7:24 split
23M
3:17:56
Rank: #16612 (+50)
35K → 23M
9:00/mi
11:16 split
24M
3:26:40
Rank: #16573 (+39)
23M → 24M
8:44/mi
8:44 split
40K· 24.85 mi
3:34:39
Rank: #16620 (-47)
24M → 40K
9:20/mi
7:59 split
25.2M
3:37:48
Rank: #16555 (+65)
40K → 25.2M
9:08/mi
3:09 split
Finish· 26.22 mi
3:46:08
Rank: #16406 (+149)
25.2M → Finish
8:11/mi
8:20 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:31
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:57:37
Pace8:58 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2028:209:0728:20
9:07
-
10K
6.21 mi12:16:3453:348:3725:14
8:07
-1:00
15K
9.32 mi12:41:141:18:148:2424:40
7:56
-0:11
20K
12.43 mi13:06:201:43:208:1925:06
8:05
+0:09
Half
13.11 mi13:11:311:48:318:175:11
7:36
-0:29
25K
15.53 mi13:33:562:10:568:2622:25
9:15
+1:39
30K
18.64 mi14:01:172:38:178:2927:21
8:48
-0:27
20M
20.00 mi14:13:022:50:028:3011:45
8:39
-0:09
21M
21.00 mi14:22:162:59:168:329:14
9:14
+0:35
35K
21.75 mi14:29:403:06:408:357:24
9:53
+0:39
23M
23.00 mi14:40:563:17:568:3611:16
9:00
-0:53
24M
24.00 mi14:49:403:26:408:378:44
8:44
-0:16
40K
24.85 mi14:57:393:34:398:387:59
9:20
+0:36
25.2M
25.20 mi15:00:483:37:488:393:09
9:08
-0:12
Finish
26.22 mi15:09:083:46:088:388:20
8:11
-0:57

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

7:36 /mi

Average Pace

8:38 /mi

Slowest Pace

9:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:31

39% of race

Time at Steady Pace

59:06

26% of race

Time at Slower Pace

1:18:31

35% of race

Average Pace: 8:37 /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 mi11:51:2028:209:0728:20
9:07
#20928
10K
6.21 mi12:16:3453:348:3725:14
8:07
#18630
15K
9.32 mi12:41:141:18:148:2424:40
7:56
#17155
20K
12.43 mi13:06:201:43:208:1925:06
8:05
#16396
Half
13.11 mi13:11:311:48:318:175:11
7:36
#16114
25K
15.53 mi13:33:562:10:568:2622:25
9:15
#16910
30K
18.64 mi14:01:172:38:178:2927:21
8:48
#16720
20M
20.00 mi14:13:022:50:028:3011:45
8:39
#16543
21M
21.00 mi14:22:162:59:168:329:14
9:14
#16405
35K
21.75 mi14:29:403:06:408:357:24
9:53
#16662
23M
23.00 mi14:40:563:17:568:3611:16
9:00
#16612
24M
24.00 mi14:49:403:26:408:378:44
8:44
#16573
40K
24.85 mi14:57:393:34:398:387:59
9:20
#16620
25.2M
25.20 mi15:00:483:37:488:393:09
9:08
#16555
Finish
26.22 mi15:09:083:46:088:388:20
8:11
#16406
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20928125721257213902(Top 52%)9860(Top 65%)9860(Top 187%)
10K6.21 mi3.10 mi18630+229811708+86411708+86415669(Top 59%)10589(Top 70%)10589(Top 200%)
15K9.32 mi3.11 mi17155+147511131+57711131+57713902(Top 52%)9860(Top 65%)9860(Top 187%)
20K12.43 mi3.11 mi16396+75910826+30510826+30514087(Top 53%)9919(Top 65%)9919(Top 188%)
Half13.11 mi0.68 mi16114+28210713+11310713+11310999(Top 41%)8638(Top 57%)8638(Top 163%)
25K15.53 mi2.42 mi16910-79610991-27810991-27819998(Top 75%)12285(Top 81%)12285(Top 232%)
30K18.64 mi3.11 mi16720+19010889+10210889+10216079(Top 60%)10512(Top 69%)10512(Top 199%)
20M20.00 mi1.36 mi16543+17710798+9110798+9114548(Top 55%)9802(Top 65%)9802(Top 185%)
21M21.00 mi1.00 mi16405+13810733+6510733+6514639(Top 55%)9783(Top 64%)9783(Top 185%)
35K21.75 mi0.75 mi16662-25710838-10510838-10520958(Top 79%)12460(Top 82%)12460(Top 236%)
23M23.00 mi1.25 mi16612+5010795+4310795+4316057(Top 60%)10262(Top 68%)10262(Top 194%)
24M24.00 mi1.00 mi16573+3910761+3410761+3415833(Top 59%)10099(Top 67%)10099(Top 191%)
40K24.85 mi0.85 mi16620-47107611076117662(Top 66%)10866(Top 72%)10866(Top 206%)
25.2M25.20 mi0.35 mi16555+6510729+3210729+3213255(Top 50%)8896(Top 59%)8896(Top 168%)
Finish26.22 mi1.02 mi16406+14910660+6910660+6913273(Top 50%)8918(Top 59%)8918(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13902

Males

9860

M18-39

9860

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15669

Males

10589

M18-39

10589

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13902

Males

9860

M18-39

9860

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14087

Males

9919

M18-39

9919

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10999

Males

8638

M18-39

8638

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

19998

Males

12285

M18-39

12285

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

16079

Males

10512

M18-39

10512

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14548

Males

9802

M18-39

9802

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

14639

Males

9783

M18-39

9783

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

20958

Males

12460

M18-39

12460

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

16057

Males

10262

M18-39

10262

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15833

Males

10099

M18-39

10099

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17662

Males

10866

M18-39

10866

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13255

Males

8896

M18-39

8896

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13273

Males

8918

M18-39

8918

Passing Analysis

Category:
Athletes Passed
5929
Passed By
1407
Net Change
+4522
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20928
5K → 10K23079+2298#20928#18630
10K → 15K14761+1475#18630#17155
15K → 20K7656+759#17155#16396
20K → Half2831+282#16396#16114
Half → 25K18814-796#16114#16910
25K → 30K26272+190#16910#16720
30K → 20M19720+177#16720#16543
20M → 21M15517+138#16543#16405
21M → 35K10267-257#16405#16662
35K → 23M10353+50#16662#16612
23M → 24M8344+39#16612#16573
24M → 40K4592-47#16573#16620
40K → 25.2M683+65#16620#16555
25.2M → Finish1578+149#16555#16406
TOTALS59291407+4522
📊

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