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BOSTON MARATHON 2023

Jerry Greenlaw

Bib: 269•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 0.6%
Gender (Male)
#0 / 15176
Top 0.9%
Division (M18-39)
#0 / 5285
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:03
Rank: #132
Start → 5K
17:03 | 5:29/mi
10K· 6.21 mi
34:15
Rank: #134 (-2)
5K → 10K
17:12 | 5:32/mi
15K· 9.32 mi
51:45
Rank: #163 (-29)
10K → 15K
17:30 | 5:38/mi
20K· 12.43 mi
1:09:16
Rank: #156 (+7)
15K → 20K
17:31 | 5:38/mi
Half· 13.11 mi
1:13:06
Rank: #155 (+1)
20K → Half
3:50 | 5:37/mi
25K· 15.53 mi
1:26:57
Rank: #154 (+1)
Half → 25K
13:51 | 5:43/mi
30K· 18.64 mi
1:45:03
Rank: #151 (+3)
25K → 30K
18:06 | 5:50/mi
20M
1:53:00
Rank: #149 (+2)
30K → 20M
7:57 | 5:51/mi
21M
1:59:18
Rank: #154 (-5)
20M → 21M
6:18 | 6:18/mi
35K· 21.75 mi
2:03:32
Rank: #154
21M → 35K
4:14 | 5:40/mi
23M
2:11:02
Rank: #157 (-3)
35K → 23M
7:30 | 5:59/mi
24M
2:16:57
Rank: #157
23M → 24M
5:55 | 5:55/mi
40K· 24.85 mi
2:22:04
Rank: #153 (+4)
24M → 40K
5:07 | 5:59/mi
25.2M
2:24:19
Rank: #153
40K → 25.2M
2:15 | 6:31/mi
Finish· 26.22 mi
2:30:27
Rank: #159 (-6)
25.2M → Finish
6:08 | 6:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:13:06
Pace5:35 /mi
2nd Half
Distance13.11 mi
Time1:17:21
Pace5:54 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:0417:035:2917:03
5:29
-
10K
6.21 mi10:34:1634:155:3117:12
5:32
+0:03
15K
9.32 mi10:51:4651:455:3317:30
5:38
+0:06
20K
12.43 mi11:09:171:09:165:3417:31
5:38
0:00
Half
13.11 mi11:13:071:13:065:353:50
5:37
-0:01
25K
15.53 mi11:26:581:26:575:3613:51
5:43
+0:06
30K
18.64 mi11:45:041:45:035:3818:06
5:50
+0:07
20M
20.00 mi11:53:011:53:005:397:57
5:51
+0:01
21M
21.00 mi11:59:191:59:185:416:18
6:18
+0:27
35K
21.75 mi12:03:332:03:325:414:14
5:40
-0:38
23M
23.00 mi12:11:032:11:025:427:30
5:59
+0:19
24M
24.00 mi12:16:582:16:575:425:55
5:55
-0:04
40K
24.85 mi12:22:052:22:045:435:07
5:59
+0:04
25.2M
25.20 mi12:24:202:24:195:442:15
6:31
+0:32
Finish
26.22 mi12:30:282:30:275:456:08
6:01
-0:30

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

5:29 /mi

Average Pace

5:45 /mi

Slowest Pace

6:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:54

94% of race

Time at Steady Pace

6:18

4% of race

Time at Slower Pace

2:15

1% of race

Average Pace: 5:44 /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 mi10:17:0417:035:2917:03
5:29
#132
10K
6.21 mi10:34:1634:155:3117:12
5:32
#134
15K
9.32 mi10:51:4651:455:3317:30
5:38
#163
20K
12.43 mi11:09:171:09:165:3417:31
5:38
#156
Half
13.11 mi11:13:071:13:065:353:50
5:37
#155
25K
15.53 mi11:26:581:26:575:3613:51
5:43
#154
30K
18.64 mi11:45:041:45:035:3818:06
5:50
#151
20M
20.00 mi11:53:011:53:005:397:57
5:51
#149
21M
21.00 mi11:59:191:59:185:416:18
6:18
#154
35K
21.75 mi12:03:332:03:325:414:14
5:40
#154
23M
23.00 mi12:11:032:11:025:427:30
5:59
#157
24M
24.00 mi12:16:582:16:575:425:55
5:55
#157
40K
24.85 mi12:22:052:22:045:435:07
5:59
#153
25.2M
25.20 mi12:24:202:24:195:442:15
6:31
#153
Finish
26.22 mi12:30:282:30:275:456:08
6:01
#159
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi132132132173(Top 0.6%)146(Top 1.0%)146(Top 3%)
10K6.21 mi3.10 mi134-2134-2134-2171(Top 0.6%)144(Top 0.9%)144(Top 3%)
15K9.32 mi3.11 mi163-29141-7141-7173(Top 0.6%)146(Top 1.0%)146(Top 3%)
20K12.43 mi3.11 mi156+7134+7134+7159(Top 0.6%)137(Top 0.9%)137(Top 3%)
Half13.11 mi0.68 mi155+1133+1133+1198(Top 0.7%)176(Top 1%)176(Top 3%)
25K15.53 mi2.42 mi154+1133133181(Top 0.7%)159(Top 1%)159(Top 3%)
30K18.64 mi3.11 mi151+3130+3130+3173(Top 0.6%)150(Top 1.0%)150(Top 3%)
20M20.00 mi1.36 mi149+2128+2128+2195(Top 0.7%)173(Top 1%)173(Top 3%)
21M21.00 mi1.00 mi154-5133-5133-5342(Top 1%)315(Top 2%)315(Top 6%)
35K21.75 mi0.75 mi154132+1132+1178(Top 0.7%)155(Top 1%)155(Top 3%)
23M23.00 mi1.25 mi157-3135-3135-3292(Top 1%)267(Top 2%)267(Top 5%)
24M24.00 mi1.00 mi157135135399(Top 1%)373(Top 2%)373(Top 7%)
40K24.85 mi0.85 mi153+4132+3132+3317(Top 1%)293(Top 2%)293(Top 6%)
25.2M25.20 mi0.35 mi153132132511(Top 2%)479(Top 3%)479(Top 9%)
Finish26.22 mi1.02 mi159-6138-6138-6747(Top 3%)714(Top 5%)714(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.6%
×21stories
+97ft-345ft

Overall

173

Males

146

M18-39

146

5K→10K

3.1 - 6.2 mi

Top 0.6%
×5stories
+79ft-138ft

Overall

171

Males

144

M18-39

144

10K→15K

6.2 - 9.3 mi

Top 0.6%
×3stories
+67ft-78ft

Overall

173

Males

146

M18-39

146

15K→20K

9.3 - 12.4 mi

Top 0.6%
×5stories
+106ft-86ft

Overall

159

Males

137

M18-39

137

20K→Half

12.4 - 13.1 mi

Top 0.7%
×2stories
+19ft-37ft

Overall

198

Males

176

M18-39

176

Half→25K

13.1 - 15.5 mi

Top 0.7%
×4stories
+66ft-88ft

Overall

181

Males

159

M18-39

159

25K→30K

15.5 - 18.6 mi

Top 0.6%
×9stories
+181ft-148ft

Overall

173

Males

150

M18-39

150

30K→20M

18.6 - 20.0 mi

Top 0.7%
×5stories
+64ft-50ft

Overall

195

Males

173

M18-39

173

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

342

Males

315

M18-39

315

21M→35K

21.0 - 21.8 mi

Top 0.7%
×7stories
+17ft-86ft

Overall

178

Males

155

M18-39

155

35K→23M

21.8 - 23.0 mi

Top 1%
×5stories
+23ft-63ft

Overall

292

Males

267

M18-39

267

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

399

Males

373

M18-39

373

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

317

Males

293

M18-39

293

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

511

Males

479

M18-39

479

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

747

Males

714

M18-39

714

Passing Analysis

Category:
Athletes Passed
42
Passed By
69
Net Change
-27
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#132
5K → 10K35-2#132#134
10K → 15K332-29#134#163
15K → 20K92+7#163#156
20K → Half10+1#156#155
Half → 25K65+1#155#154
25K → 30K41+3#154#151
30K → 20M53+2#151#149
20M → 21M05-5#149#154
21M → 35K110#154#154
35K → 23M03-3#154#157
23M → 24M550#157#157
24M → 40K40+4#157#153
40K → 25.2M000#153#153
25.2M → Finish17-6#153#159
TOTALS4269-27
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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