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BOSTON MARATHON 2023

Zachary Roof

Bib: 8726•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 36%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 39%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:58
Rank: #14258
Start → 5K
24:58 | 8:02/mi
10K· 6.21 mi
48:26
Rank: #12632 (+1626)
5K → 10K
23:28 | 7:33/mi
15K· 9.32 mi
1:12:41
Rank: #12656 (-24)
10K → 15K
24:15 | 7:48/mi
20K· 12.43 mi
1:37:05
Rank: #12495 (+161)
15K → 20K
24:24 | 7:51/mi
Half· 13.11 mi
1:42:06
Rank: #12307 (+188)
20K → Half
5:01 | 7:21/mi
25K· 15.53 mi
2:00:22
Rank: #11703 (+604)
Half → 25K
18:16 | 7:32/mi
30K· 18.64 mi
2:24:23
Rank: #11131 (+572)
25K → 30K
24:01 | 7:44/mi
20M
2:34:41
Rank: #10787 (+344)
30K → 20M
10:18 | 7:35/mi
21M
2:42:39
Rank: #10577 (+210)
20M → 21M
7:58 | 7:58/mi
35K· 21.75 mi
2:48:09
Rank: #10436 (+141)
21M → 35K
5:30 | 7:21/mi
23M
2:57:40
Rank: #10218 (+218)
35K → 23M
9:31 | 7:36/mi
24M
3:05:01
Rank: #10016 (+202)
23M → 24M
7:21 | 7:21/mi
40K· 24.85 mi
3:11:22
Rank: #9824 (+192)
24M → 40K
6:21 | 7:26/mi
25.2M
3:14:09
Rank: #9760 (+64)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:21:13
Rank: #9507 (+253)
25.2M → Finish
7:04 | 6:56/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:42:06
Pace7:47 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:07
Pace7:34 /mi
📊Negative Split: 2.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:3924:588:0224:58
8:02
-
10K
6.21 mi11:14:0748:267:4823:28
7:33
-0:29
15K
9.32 mi11:38:221:12:417:4824:15
7:48
+0:15
20K
12.43 mi12:02:461:37:057:4924:24
7:51
+0:03
Half
13.11 mi12:07:471:42:067:475:01
7:21
-0:30
25K
15.53 mi12:26:032:00:227:4518:16
7:32
+0:11
30K
18.64 mi12:50:042:24:237:4524:01
7:44
+0:12
20M
20.00 mi13:00:222:34:417:4410:18
7:35
-0:09
21M
21.00 mi13:08:202:42:397:457:58
7:58
+0:23
35K
21.75 mi13:13:502:48:097:445:30
7:21
-0:37
23M
23.00 mi13:23:212:57:407:439:31
7:36
+0:15
24M
24.00 mi13:30:423:05:017:437:21
7:21
-0:15
40K
24.85 mi13:37:033:11:227:426:21
7:26
+0:05
25.2M
25.20 mi13:39:503:14:097:422:47
8:04
+0:38
Finish
26.22 mi13:46:543:21:137:417:04
6:56
-1:08

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

6:56 /mi

Average Pace

7:41 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:50

46% of race

Time at Steady Pace

1:48:23

54% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:40 /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 mi10:50:3924:588:0224:58
8:02
#14258
10K
6.21 mi11:14:0748:267:4823:28
7:33
#12632
15K
9.32 mi11:38:221:12:417:4824:15
7:48
#12656
20K
12.43 mi12:02:461:37:057:4924:24
7:51
#12495
Half
13.11 mi12:07:471:42:067:475:01
7:21
#12307
25K
15.53 mi12:26:032:00:227:4518:16
7:32
#11703
30K
18.64 mi12:50:042:24:237:4524:01
7:44
#11131
20M
20.00 mi13:00:222:34:417:4410:18
7:35
#10787
21M
21.00 mi13:08:202:42:397:457:58
7:58
#10577
35K
21.75 mi13:13:502:48:097:445:30
7:21
#10436
23M
23.00 mi13:23:212:57:407:439:31
7:36
#10218
24M
24.00 mi13:30:423:05:017:437:21
7:21
#10016
40K
24.85 mi13:37:033:11:227:426:21
7:26
#9824
25.2M
25.20 mi13:39:503:14:097:422:47
8:04
#9760
Finish
26.22 mi13:46:543:21:137:417:04
6:56
#9507
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi14258100541005412747(Top 48%)9404(Top 62%)9404(Top 420%)
10K6.21 mi3.10 mi12632+16269386+6689386+66810891(Top 41%)8620(Top 57%)8620(Top 385%)
15K9.32 mi3.11 mi12656-249378+89378+812747(Top 48%)9404(Top 62%)9404(Top 420%)
20K12.43 mi3.11 mi12495+1619279+999279+9912177(Top 46%)9084(Top 60%)9084(Top 405%)
Half13.11 mi0.68 mi12307+1889190+899190+899011(Top 34%)7527(Top 50%)7527(Top 336%)
25K15.53 mi2.42 mi11703+6048926+2648926+2649021(Top 34%)7450(Top 49%)7450(Top 332%)
30K18.64 mi3.11 mi11131+5728631+2958631+2958861(Top 33%)7196(Top 47%)7196(Top 321%)
20M20.00 mi1.36 mi10787+3448445+1868445+1867361(Top 28%)6199(Top 41%)6199(Top 277%)
21M21.00 mi1.00 mi10577+2108324+1218324+1217145(Top 27%)5961(Top 39%)5961(Top 266%)
35K21.75 mi0.75 mi10436+1418233+918233+917493(Top 28%)6197(Top 41%)6197(Top 277%)
23M23.00 mi1.25 mi10218+2188100+1338100+1337097(Top 27%)5892(Top 39%)5892(Top 263%)
24M24.00 mi1.00 mi10016+2027959+1417959+1416730(Top 25%)5569(Top 37%)5569(Top 249%)
40K24.85 mi0.85 mi9824+1927832+1277832+1276253(Top 23%)5188(Top 34%)5188(Top 232%)
25.2M25.20 mi0.35 mi9760+647788+447788+446907(Top 26%)5539(Top 36%)5539(Top 247%)
Finish26.22 mi1.02 mi9507+2537626+1627626+1624847(Top 18%)4170(Top 27%)4170(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12747

Males

9404

M40-44

9404

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10891

Males

8620

M40-44

8620

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12747

Males

9404

M40-44

9404

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12177

Males

9084

M40-44

9084

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9011

Males

7527

M40-44

7527

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9021

Males

7450

M40-44

7450

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8861

Males

7196

M40-44

7196

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7361

Males

6199

M40-44

6199

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7145

Males

5961

M40-44

5961

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7493

Males

6197

M40-44

6197

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7097

Males

5892

M40-44

5892

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6730

Males

5569

M40-44

5569

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6253

Males

5188

M40-44

5188

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6907

Males

5539

M40-44

5539

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4847

Males

4170

M40-44

4170

Passing Analysis

Category:
Athletes Passed
5135*
Passed By
384
Net Change
+4751
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14258
5K → 10K165428+1626#14258#12632
10K → 15K190214-24#12632#12656
15K → 20K25796+161#12656#12495
20K → Half1880+188#12495#12307
Half → 25K6051+604#12307#11703
25K → 30K58311+572#11703#11131
30K → 20M344*0+344#11131#10787
20M → 21M2144+210#10787#10577
21M → 35K1454+141#10577#10436
35K → 23M2246+218#10436#10218
23M → 24M2097+202#10218#10016
24M → 40K196*4+192#10016#9824
40K → 25.2M684+64#9824#9760
25.2M → Finish258*5+253#9760#9507
TOTALS5135*384+4751

* 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