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BOSTON MARATHON 2023

Michael Keefer

Bib: 5770•M

IN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:33
Rank: #2972
Start → 5K
20:33 | 6:37/mi
10K· 6.21 mi
40:37
Rank: #2714 (+258)
5K → 10K
20:04 | 6:28/mi
15K· 9.32 mi
1:00:41
Rank: #2592 (+122)
10K → 15K
20:04 | 6:28/mi
20K· 12.43 mi
1:21:11
Rank: #2635 (-43)
15K → 20K
20:30 | 6:36/mi
Half· 13.11 mi
1:25:32
Rank: #2606 (+29)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:41:33
Rank: #2612 (-6)
Half → 25K
16:01 | 6:36/mi
30K· 18.64 mi
2:03:36
Rank: #2919 (-307)
25K → 30K
22:03 | 7:06/mi
20M
2:13:12
Rank: #3000 (-81)
30K → 20M
9:36 | 7:04/mi
21M
2:20:38
Rank: #3073 (-73)
20M → 21M
7:26 | 7:26/mi
35K· 21.75 mi
2:25:31
Rank: #3035 (+38)
21M → 35K
4:53 | 6:32/mi
23M
2:34:13
Rank: #3035
35K → 23M
8:42 | 6:57/mi
24M
2:41:14
Rank: #3092 (-57)
23M → 24M
7:01 | 7:01/mi
40K· 24.85 mi
2:47:36
Rank: #3222 (-130)
24M → 40K
6:22 | 7:27/mi
25.2M
2:50:26
Rank: #3297 (-75)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
2:57:56
Rank: #3463 (-166)
25.2M → Finish
7:30 | 7:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:32
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:32:24
Pace7:03 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0120:336:3720:33
6:37
-
10K
6.21 mi11:07:0540:376:3220:04
6:28
-0:09
15K
9.32 mi11:27:091:00:416:3120:04
6:28
0:00
20K
12.43 mi11:47:391:21:116:3220:30
6:36
+0:08
Half
13.11 mi11:52:001:25:326:314:21
6:23
-0:13
25K
15.53 mi12:08:011:41:336:3216:01
6:36
+0:13
30K
18.64 mi12:30:042:03:366:3822:03
7:06
+0:30
20M
20.00 mi12:39:402:13:126:409:36
7:04
-0:02
21M
21.00 mi12:47:062:20:386:427:26
7:26
+0:22
35K
21.75 mi12:51:592:25:316:414:53
6:32
-0:54
23M
23.00 mi13:00:412:34:136:428:42
6:57
+0:25
24M
24.00 mi13:07:422:41:146:437:01
7:01
+0:04
40K
24.85 mi13:14:042:47:366:456:22
7:27
+0:26
25.2M
25.20 mi13:16:542:50:266:462:50
8:13
+0:46
Finish
26.22 mi13:24:242:57:566:477:30
7:22
-0:51

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

6:23 /mi

Average Pace

6:47 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:26

60% of race

Time at Steady Pace

47:22

27% of race

Time at Slower Pace

24:08

14% of race

Average Pace: 6:47 /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 mi10:47:0120:336:3720:33
6:37
#2972
10K
6.21 mi11:07:0540:376:3220:04
6:28
#2714
15K
9.32 mi11:27:091:00:416:3120:04
6:28
#2592
20K
12.43 mi11:47:391:21:116:3220:30
6:36
#2635
Half
13.11 mi11:52:001:25:326:314:21
6:23
#2606
25K
15.53 mi12:08:011:41:336:3216:01
6:36
#2612
30K
18.64 mi12:30:042:03:366:3822:03
7:06
#2919
20M
20.00 mi12:39:402:13:126:409:36
7:04
#3000
21M
21.00 mi12:47:062:20:386:427:26
7:26
#3073
35K
21.75 mi12:51:592:25:316:414:53
6:32
#3035
23M
23.00 mi13:00:412:34:136:428:42
6:57
#3035
24M
24.00 mi13:07:422:41:146:437:01
7:01
#3092
40K
24.85 mi13:14:042:47:366:456:22
7:27
#3222
25.2M
25.20 mi13:16:542:50:266:462:50
8:13
#3297
Finish
26.22 mi13:24:242:57:566:477:30
7:22
#3463
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2972282228222411(Top 9%)2314(Top 15%)2314(Top 44%)
10K6.21 mi3.10 mi2714+2582590+2322590+2322560(Top 10%)2447(Top 16%)2447(Top 46%)
15K9.32 mi3.11 mi2592+1222477+1132477+1132411(Top 9%)2314(Top 15%)2314(Top 44%)
20K12.43 mi3.11 mi2635-432519-422519-422843(Top 11%)2717(Top 18%)2717(Top 51%)
Half13.11 mi0.68 mi2606+292492+272492+272152(Top 8%)2068(Top 14%)2068(Top 39%)
25K15.53 mi2.42 mi2612-62498-62498-62754(Top 10%)2635(Top 17%)2635(Top 50%)
30K18.64 mi3.11 mi2919-3072791-2932791-2934906(Top 18%)4514(Top 30%)4514(Top 85%)
20M20.00 mi1.36 mi3000-812860-692860-694385(Top 16%)4034(Top 27%)4034(Top 76%)
21M21.00 mi1.00 mi3073-732919-592919-594255(Top 16%)3895(Top 26%)3895(Top 74%)
35K21.75 mi0.75 mi3035+382884+352884+352600(Top 10%)2459(Top 16%)2459(Top 47%)
23M23.00 mi1.25 mi3035288428843505(Top 13%)3246(Top 21%)3246(Top 61%)
24M24.00 mi1.00 mi3092-572932-482932-484724(Top 18%)4215(Top 28%)4215(Top 80%)
40K24.85 mi0.85 mi3222-1303049-1173049-1176307(Top 24%)5206(Top 34%)5206(Top 99%)
25.2M25.20 mi0.35 mi3297-753119-703119-707668(Top 29%)5944(Top 39%)5944(Top 112%)
Finish26.22 mi1.02 mi3463-1663264-1453264-1457466(Top 28%)5833(Top 38%)5833(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2411

Males

2314

M18-39

2314

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2560

Males

2447

M18-39

2447

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2411

Males

2314

M18-39

2314

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2843

Males

2717

M18-39

2717

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2152

Males

2068

M18-39

2068

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2754

Males

2635

M18-39

2635

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4906

Males

4514

M18-39

4514

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4385

Males

4034

M18-39

4034

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4255

Males

3895

M18-39

3895

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2600

Males

2459

M18-39

2459

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3505

Males

3246

M18-39

3246

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4724

Males

4215

M18-39

4215

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6307

Males

5206

M18-39

5206

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7668

Males

5944

M18-39

5944

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7466

Males

5833

M18-39

5833

Passing Analysis

Category:
Athletes Passed
831
Passed By
1322
Net Change
-491
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2972
5K → 10K31961+258#2972#2714
10K → 15K15432+122#2714#2592
15K → 20K5194-43#2592#2635
20K → Half323+29#2635#2606
Half → 25K4955-6#2606#2612
25K → 30K23330-307#2612#2919
30K → 20M23104-81#2919#3000
20M → 21M2699-73#3000#3073
21M → 35K4810+38#3073#3035
35K → 23M51510#3035#3035
23M → 24M2582-57#3035#3092
24M → 40K12142-130#3092#3222
40K → 25.2M378-75#3222#3297
25.2M → Finish15181-166#3297#3463
TOTALS8311322-491
📊

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