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BOSTON MARATHON 2023

Douglas Back

Bib: 9103•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 27%
Masters (Masters Men)
#0 / 9891
Top 13%
Division (M40-44)
#0 / 2241
Top 32%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:05
Rank: #6906
Start → 5K
22:05 | 7:06/mi
10K· 6.21 mi
43:34
Rank: #6560 (+346)
5K → 10K
21:29 | 6:55/mi
15K· 9.32 mi
1:05:02
Rank: #6361 (+199)
10K → 15K
21:28 | 6:55/mi
20K· 12.43 mi
1:26:30
Rank: #6105 (+256)
15K → 20K
21:28 | 6:55/mi
Half· 13.11 mi
1:31:09
Rank: #6071 (+34)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:47:46
Rank: #5819 (+252)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:09:08
Rank: #5383 (+436)
25K → 30K
21:22 | 6:53/mi
20M
2:18:19
Rank: #5110 (+273)
30K → 20M
9:11 | 6:45/mi
21M
2:25:09
Rank: #4820 (+290)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:30:16
Rank: #4778 (+42)
21M → 35K
5:07 | 6:50/mi
23M
2:38:51
Rank: #4637 (+141)
35K → 23M
8:35 | 6:51/mi
24M
2:45:42
Rank: #4579 (+58)
23M → 24M
6:51 | 6:51/mi
40K· 24.85 mi
2:51:33
Rank: #4489 (+90)
24M → 40K
5:51 | 6:51/mi
25.2M
2:54:05
Rank: #4451 (+38)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
3:00:48
Rank: #4374 (+77)
25.2M → Finish
6:43 | 6:35/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:31:09
Pace6:57 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:29:39
Pace6:50 /mi
📊Negative Split: 1.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:5022:057:0622:05
7:06
-
10K
6.21 mi11:09:1943:347:0121:29
6:55
-0:11
15K
9.32 mi11:30:471:05:026:5921:28
6:55
0:00
20K
12.43 mi11:52:151:26:306:5821:28
6:55
0:00
Half
13.11 mi11:56:541:31:096:574:39
6:49
-0:06
25K
15.53 mi12:13:311:47:466:5616:37
6:51
+0:02
30K
18.64 mi12:34:532:09:086:5621:22
6:53
+0:02
20M
20.00 mi12:44:042:18:196:559:11
6:45
-0:08
21M
21.00 mi12:50:542:25:096:556:50
6:50
+0:05
35K
21.75 mi12:56:012:30:166:555:07
6:50
0:00
23M
23.00 mi13:04:362:38:516:548:35
6:51
+0:01
24M
24.00 mi13:11:272:45:426:546:51
6:51
0:00
40K
24.85 mi13:17:182:51:336:545:51
6:51
0:00
25.2M
25.20 mi13:19:502:54:056:542:32
7:21
+0:30
Finish
26.22 mi13:26:333:00:486:546:43
6:35
-0:46

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

6:35 /mi

Average Pace

6:54 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:16

99% of race

Time at Steady Pace

2:32

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:47:5022:057:0622:05
7:06
#6906
10K
6.21 mi11:09:1943:347:0121:29
6:55
#6560
15K
9.32 mi11:30:471:05:026:5921:28
6:55
#6361
20K
12.43 mi11:52:151:26:306:5821:28
6:55
#6105
Half
13.11 mi11:56:541:31:096:574:39
6:49
#6071
25K
15.53 mi12:13:311:47:466:5616:37
6:51
#5819
30K
18.64 mi12:34:532:09:086:5621:22
6:53
#5383
20M
20.00 mi12:44:042:18:196:559:11
6:45
#5110
21M
21.00 mi12:50:542:25:096:556:50
6:50
#4820
35K
21.75 mi12:56:012:30:166:555:07
6:50
#4778
23M
23.00 mi13:04:362:38:516:548:35
6:51
#4637
24M
24.00 mi13:11:272:45:426:546:51
6:51
#4579
40K
24.85 mi13:17:182:51:336:545:51
6:51
#4489
25.2M
25.20 mi13:19:502:54:056:542:32
7:21
#4451
Finish
26.22 mi13:26:333:00:486:546:43
6:35
#4374
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6906619661966001(Top 23%)5461(Top 36%)5461(Top 244%)
10K6.21 mi3.10 mi6560+3465917+2795917+2796234(Top 23%)5644(Top 37%)5644(Top 252%)
15K9.32 mi3.11 mi6361+1995756+1615756+1616001(Top 23%)5461(Top 36%)5461(Top 244%)
20K12.43 mi3.11 mi6105+2565556+2005556+2005402(Top 20%)4985(Top 33%)4985(Top 222%)
Half13.11 mi0.68 mi6071+345534+225534+225323(Top 20%)4906(Top 32%)4906(Top 219%)
25K15.53 mi2.42 mi5819+2525337+1975337+1974608(Top 17%)4287(Top 28%)4287(Top 191%)
30K18.64 mi3.11 mi5383+4364966+3714966+3713518(Top 13%)3309(Top 22%)3309(Top 148%)
20M20.00 mi1.36 mi5110+2734733+2334733+2332594(Top 10%)2461(Top 16%)2461(Top 110%)
21M21.00 mi1.00 mi4820+2904477+2564477+2561550(Top 6%)1474(Top 10%)1474(Top 66%)
35K21.75 mi0.75 mi4778+424440+374440+374370(Top 16%)3988(Top 26%)3988(Top 178%)
23M23.00 mi1.25 mi4637+1414312+1284312+1282998(Top 11%)2799(Top 18%)2799(Top 125%)
24M24.00 mi1.00 mi4579+584264+484264+483884(Top 15%)3543(Top 23%)3543(Top 158%)
40K24.85 mi0.85 mi4489+904183+814183+813069(Top 12%)2814(Top 19%)2814(Top 126%)
25.2M25.20 mi0.35 mi4451+384148+354148+353190(Top 12%)2913(Top 19%)2913(Top 130%)
Finish26.22 mi1.02 mi4374+774081+674081+672953(Top 11%)2678(Top 18%)2678(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6001

Males

5461

M40-44

5461

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6234

Males

5644

M40-44

5644

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6001

Males

5461

M40-44

5461

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5402

Males

4985

M40-44

4985

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5323

Males

4906

M40-44

4906

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4608

Males

4287

M40-44

4287

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3518

Males

3309

M40-44

3309

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2594

Males

2461

M40-44

2461

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1550

Males

1474

M40-44

1474

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4370

Males

3988

M40-44

3988

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2998

Males

2799

M40-44

2799

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

3884

Males

3543

M40-44

3543

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3069

Males

2814

M40-44

2814

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3190

Males

2913

M40-44

2913

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2953

Males

2678

M40-44

2678

Passing Analysis

Category:
Athletes Passed
2737
Passed By
205
Net Change
+2532
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6906
5K → 10K40660+346#6906#6560
10K → 15K24445+199#6560#6361
15K → 20K26610+256#6361#6105
20K → Half373+34#6105#6071
Half → 25K2608+252#6071#5819
25K → 30K4393+436#5819#5383
30K → 20M2763+273#5383#5110
20M → 21M2900+290#5110#4820
21M → 35K6624+42#4820#4778
35K → 23M1498+141#4778#4637
23M → 24M7719+58#4637#4579
24M → 40K955+90#4579#4489
40K → 25.2M413+38#4489#4451
25.2M → Finish9114+77#4451#4374
TOTALS2737205+2532
📊

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