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BOSTON MARATHON 2023

Lachlan Arthur

Bib: 1444•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 7%
Division (M18-39)
#0 / 5285
Top 17%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:22
Rank: #1213
Start → 5K
19:22 | 6:14/mi
10K· 6.21 mi
38:32
Rank: #1205 (+8)
5K → 10K
19:10 | 6:10/mi
15K· 9.32 mi
57:50
Rank: #1208 (-3)
10K → 15K
19:18 | 6:13/mi
20K· 12.43 mi
1:17:16
Rank: #1200 (+8)
15K → 20K
19:26 | 6:15/mi
Half· 13.11 mi
1:21:31
Rank: #1210 (-10)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:36:42
Rank: #1198 (+12)
Half → 25K
15:11 | 6:16/mi
30K· 18.64 mi
1:56:23
Rank: #1154 (+44)
25K → 30K
19:41 | 6:20/mi
20M
2:04:59
Rank: #1115 (+39)
30K → 20M
8:36 | 6:20/mi
21M
2:11:37
Rank: #1086 (+29)
20M → 21M
6:38 | 6:38/mi
35K· 21.75 mi
2:16:18
Rank: #1083 (+3)
21M → 35K
4:41 | 6:16/mi
23M
2:24:25
Rank: #1082 (+1)
35K → 23M
8:07 | 6:29/mi
24M
2:30:52
Rank: #1109 (-27)
23M → 24M
6:27 | 6:27/mi
40K· 24.85 mi
2:36:31
Rank: #1116 (-7)
24M → 40K
5:39 | 6:36/mi
25.2M
2:38:56
Rank: #1118 (-2)
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
2:45:29
Rank: #1135 (-17)
25.2M → Finish
6:33 | 6:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:31
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:23:58
Pace6:24 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4819:226:1419:22
6:14
-
10K
6.21 mi10:38:5838:326:1219:10
6:10
-0:04
15K
9.32 mi10:58:1657:506:1219:18
6:13
+0:03
20K
12.43 mi11:17:421:17:166:1319:26
6:15
+0:02
Half
13.11 mi11:21:571:21:316:134:15
6:14
-0:01
25K
15.53 mi11:37:081:36:426:1315:11
6:16
+0:02
30K
18.64 mi11:56:491:56:236:1519:41
6:20
+0:04
20M
20.00 mi12:05:252:04:596:158:36
6:20
0:00
21M
21.00 mi12:12:032:11:376:166:38
6:38
+0:18
35K
21.75 mi12:16:442:16:186:164:41
6:16
-0:22
23M
23.00 mi12:24:512:24:256:178:07
6:29
+0:13
24M
24.00 mi12:31:182:30:526:176:27
6:27
-0:02
40K
24.85 mi12:36:572:36:316:185:39
6:36
+0:09
25.2M
25.20 mi12:39:222:38:566:182:25
7:00
+0:24
Finish
26.22 mi12:45:552:45:296:196:33
6:26
-0:34

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

6:10 /mi

Average Pace

6:19 /mi

Slowest Pace

7:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:04

99% of race

Time at Steady Pace

2:25

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:19 /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 mi10:19:4819:226:1419:22
6:14
#1213
10K
6.21 mi10:38:5838:326:1219:10
6:10
#1205
15K
9.32 mi10:58:1657:506:1219:18
6:13
#1208
20K
12.43 mi11:17:421:17:166:1319:26
6:15
#1200
Half
13.11 mi11:21:571:21:316:134:15
6:14
#1210
25K
15.53 mi11:37:081:36:426:1315:11
6:16
#1198
30K
18.64 mi11:56:491:56:236:1519:41
6:20
#1154
20M
20.00 mi12:05:252:04:596:158:36
6:20
#1115
21M
21.00 mi12:12:032:11:376:166:38
6:38
#1086
35K
21.75 mi12:16:442:16:186:164:41
6:16
#1083
23M
23.00 mi12:24:512:24:256:178:07
6:29
#1082
24M
24.00 mi12:31:182:30:526:176:27
6:27
#1109
40K
24.85 mi12:36:572:36:316:185:39
6:36
#1116
25.2M
25.20 mi12:39:222:38:566:182:25
7:00
#1118
Finish
26.22 mi12:45:552:45:296:196:33
6:26
#1135
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1213115011501285(Top 5%)1223(Top 8%)1223(Top 23%)
10K6.21 mi3.10 mi1205+81142+81142+81230(Top 5%)1167(Top 8%)1167(Top 22%)
15K9.32 mi3.11 mi1208-31146-41146-41285(Top 5%)1223(Top 8%)1223(Top 23%)
20K12.43 mi3.11 mi1200+81142+41142+41234(Top 5%)1181(Top 8%)1181(Top 22%)
Half13.11 mi0.68 mi1210-101152-101152-101464(Top 5%)1400(Top 9%)1400(Top 26%)
25K15.53 mi2.42 mi1198+121143+91143+91186(Top 4%)1132(Top 7%)1132(Top 21%)
30K18.64 mi3.11 mi1154+441101+421101+421022(Top 4%)971(Top 6%)971(Top 18%)
20M20.00 mi1.36 mi1115+391062+391062+39945(Top 4%)902(Top 6%)902(Top 17%)
21M21.00 mi1.00 mi1086+291033+291033+29935(Top 4%)887(Top 6%)887(Top 17%)
35K21.75 mi0.75 mi1083+31031+21031+21416(Top 5%)1342(Top 9%)1342(Top 25%)
23M23.00 mi1.25 mi1082+11030+11030+11352(Top 5%)1281(Top 8%)1281(Top 24%)
24M24.00 mi1.00 mi1109-271057-271057-271867(Top 7%)1753(Top 12%)1753(Top 33%)
40K24.85 mi0.85 mi1116-71064-71064-71925(Top 7%)1807(Top 12%)1807(Top 34%)
25.2M25.20 mi0.35 mi1118-21065-11065-11724(Top 6%)1617(Top 11%)1617(Top 31%)
Finish26.22 mi1.02 mi1135-171081-161081-162106(Top 8%)1951(Top 13%)1951(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1285

Males

1223

M18-39

1223

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1230

Males

1167

M18-39

1167

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1285

Males

1223

M18-39

1223

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1234

Males

1181

M18-39

1181

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1464

Males

1400

M18-39

1400

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1186

Males

1132

M18-39

1132

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1022

Males

971

M18-39

971

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

945

Males

902

M18-39

902

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

935

Males

887

M18-39

887

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1416

Males

1342

M18-39

1342

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1352

Males

1281

M18-39

1281

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1867

Males

1753

M18-39

1753

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1925

Males

1807

M18-39

1807

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1724

Males

1617

M18-39

1617

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2106

Males

1951

M18-39

1951

Passing Analysis

Category:
Athletes Passed
377
Passed By
299
Net Change
+78
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1213
5K → 10K6759+8#1213#1205
10K → 15K3639-3#1205#1208
15K → 20K3729+8#1208#1200
20K → Half212-10#1200#1210
Half → 25K2816+12#1210#1198
25K → 30K6319+44#1198#1154
30K → 20M456+39#1154#1115
20M → 21M367+29#1115#1086
21M → 35K107+3#1086#1083
35K → 23M1817+1#1083#1082
23M → 24M431-27#1082#1109
24M → 40K1219-7#1109#1116
40K → 25.2M810-2#1116#1118
25.2M → Finish1128-17#1118#1135
TOTALS377299+78
📊

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