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BOSTON MARATHON 2023

Robin Grantham

Bib: 471•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Masters (Masters Men)
#0 / 9891
Top 0.7%
Division (M50-54)
#0 / 2052
Top 0.2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:49
Rank: #295
Start → 5K
17:49 | 5:44/mi
10K· 6.21 mi
35:55
Rank: #388 (-93)
5K → 10K
18:06 | 5:50/mi
15K· 9.32 mi
54:18
Rank: #414 (-26)
10K → 15K
18:23 | 5:55/mi
20K· 12.43 mi
1:13:11
Rank: #480 (-66)
15K → 20K
18:53 | 6:05/mi
Half· 13.11 mi
1:17:17
Rank: #487 (-7)
20K → Half
4:06 | 6:01/mi
25K· 15.53 mi
1:32:04
Rank: #525 (-38)
Half → 25K
14:47 | 6:06/mi
30K· 18.64 mi
1:51:38
Rank: #553 (-28)
25K → 30K
19:34 | 6:18/mi
20M
2:00:13
Rank: #568 (-15)
30K → 20M
8:35 | 6:19/mi
21M
2:06:49
Rank: #575 (-7)
20M → 21M
6:36 | 6:36/mi
35K· 21.75 mi
2:11:22
Rank: #576 (-1)
21M → 35K
4:33 | 6:05/mi
23M
2:19:13
Rank: #579 (-3)
35K → 23M
7:51 | 6:16/mi
24M
2:25:19
Rank: #579
23M → 24M
6:06 | 6:06/mi
40K· 24.85 mi
2:30:39
Rank: #579
24M → 40K
5:20 | 6:14/mi
25.2M
2:32:56
Rank: #575 (+4)
40K → 25.2M
2:17 | 6:37/mi
Finish· 26.22 mi
2:38:57
Rank: #569 (+6)
25.2M → Finish
6:01 | 5:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:17
Pace5:54 /mi
2nd Half
Distance13.11 mi
Time1:21:40
Pace6:14 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:5117:495:4417:49
5:44
-
10K
6.21 mi10:35:5735:555:4718:06
5:50
+0:06
15K
9.32 mi10:54:2054:185:5018:23
5:55
+0:05
20K
12.43 mi11:13:131:13:115:5318:53
6:05
+0:10
Half
13.11 mi11:17:191:17:175:544:06
6:01
-0:04
25K
15.53 mi11:32:061:32:045:5614:47
6:06
+0:05
30K
18.64 mi11:51:401:51:385:5919:34
6:18
+0:12
20M
20.00 mi12:00:152:00:136:018:35
6:19
+0:01
21M
21.00 mi12:06:512:06:496:026:36
6:36
+0:17
35K
21.75 mi12:11:242:11:226:024:33
6:05
-0:31
23M
23.00 mi12:19:152:19:136:037:51
6:16
+0:11
24M
24.00 mi12:25:212:25:196:036:06
6:06
-0:10
40K
24.85 mi12:30:412:30:396:045:20
6:14
+0:08
25.2M
25.20 mi12:32:582:32:566:042:17
6:37
+0:23
Finish
26.22 mi12:38:592:38:576:046:01
5:54
-0:43

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

5:44 /mi

Average Pace

6:04 /mi

Slowest Pace

6:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:29

89% of race

Time at Steady Pace

17:28

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:04 /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 mi10:17:5117:495:4417:49
5:44
#295
10K
6.21 mi10:35:5735:555:4718:06
5:50
#388
15K
9.32 mi10:54:2054:185:5018:23
5:55
#414
20K
12.43 mi11:13:131:13:115:5318:53
6:05
#480
Half
13.11 mi11:17:191:17:175:544:06
6:01
#487
25K
15.53 mi11:32:061:32:045:5614:47
6:06
#525
30K
18.64 mi11:51:401:51:385:5919:34
6:18
#553
20M
20.00 mi12:00:152:00:136:018:35
6:19
#568
21M
21.00 mi12:06:512:06:496:026:36
6:36
#575
35K
21.75 mi12:11:242:11:226:024:33
6:05
#576
23M
23.00 mi12:19:152:19:136:037:51
6:16
#579
24M
24.00 mi12:25:212:25:196:036:06
6:06
#579
40K
24.85 mi12:30:412:30:396:045:20
6:14
#579
25.2M
25.20 mi12:32:582:32:566:042:17
6:37
#575
Finish
26.22 mi12:38:592:38:576:046:01
5:54
#569
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi295291291547(Top 2%)505(Top 3%)505(Top 25%)
10K6.21 mi3.10 mi388-93353-62353-62463(Top 2%)428(Top 3%)428(Top 21%)
15K9.32 mi3.11 mi414-26379-26379-26547(Top 2%)505(Top 3%)505(Top 25%)
20K12.43 mi3.11 mi480-66441-62441-62724(Top 3%)682(Top 4%)682(Top 33%)
Half13.11 mi0.68 mi487-7448-7448-7760(Top 3%)719(Top 5%)719(Top 35%)
25K15.53 mi2.42 mi525-38485-37485-37729(Top 3%)688(Top 5%)688(Top 34%)
30K18.64 mi3.11 mi553-28513-28513-28903(Top 3%)860(Top 6%)860(Top 42%)
20M20.00 mi1.36 mi568-15528-15528-15893(Top 3%)852(Top 6%)852(Top 42%)
21M21.00 mi1.00 mi575-7535-7535-7857(Top 3%)811(Top 5%)811(Top 40%)
35K21.75 mi0.75 mi576-1536-1536-1857(Top 3%)814(Top 5%)814(Top 40%)
23M23.00 mi1.25 mi579-3540-4540-4751(Top 3%)710(Top 5%)710(Top 35%)
24M24.00 mi1.00 mi579539+1539+1756(Top 3%)716(Top 5%)716(Top 35%)
40K24.85 mi0.85 mi579540-1540-1724(Top 3%)685(Top 5%)685(Top 33%)
25.2M25.20 mi0.35 mi575+4536+4536+4679(Top 3%)644(Top 4%)644(Top 31%)
Finish26.22 mi1.02 mi569+6531+5531+5529(Top 2%)503(Top 3%)503(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

547

Males

505

M50-54

505

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

463

Males

428

M50-54

428

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

547

Males

505

M50-54

505

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

724

Males

682

M50-54

682

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

760

Males

719

M50-54

719

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

729

Males

688

M50-54

688

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

903

Males

860

M50-54

860

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

893

Males

852

M50-54

852

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

857

Males

811

M50-54

811

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

857

Males

814

M50-54

814

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

751

Males

710

M50-54

710

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

756

Males

716

M50-54

716

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

724

Males

685

M50-54

685

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

679

Males

644

M50-54

644

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

529

Males

503

M50-54

503

Passing Analysis

Category:
Athletes Passed
90
Passed By
364
Net Change
-274
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#295
5K → 10K295-93#295#388
10K → 15K632-26#388#414
15K → 20K268-66#414#480
20K → Half18-7#480#487
Half → 25K442-38#487#525
25K → 30K735-28#525#553
30K → 20M621-15#553#568
20M → 21M714-7#568#575
21M → 35K56-1#575#576
35K → 23M1013-3#576#579
23M → 24M12120#579#579
24M → 40K10100#579#579
40K → 25.2M62+4#579#575
25.2M → Finish126+6#575#569
TOTALS90364-274
📊

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