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BOSTON MARATHON 2023

Randy Laing

Bib: 31937•M

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 40%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:46/mi
24:09
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
47:08
↑ 79↓ 1380.4%
15K· 9.32 mi
7:22/mi
1:10:00
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:33:25
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:38:32
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:57:06
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:21:36
↑ 181↓ 1480.2%
20M
7:56/mi
2:32:23
↑ 64↓ 500.2%
21M
8:16/mi
2:40:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:46:20
↑ 17↓ 861.7%
23M
7:56/mi
2:56:16
↑ 23↓ 630.6%
24M
7:59/mi
3:04:15
↓ 821.3%
40K· 24.85 mi
8:09/mi
3:11:13
↓ 200.3%
25.2M
8:48/mi
3:14:15
↑ 13↓ 160.2%
Finish· 26.22 mi
7:43/mi
3:22:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:32
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:43:35
Pace7:54 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0224:097:4624:09
7:46
-
10K
6.21 mi12:07:0147:087:3522:59
7:24
-0:22
15K
9.32 mi12:29:531:10:007:3122:52
7:22
-0:02
20K
12.43 mi12:53:181:33:257:3123:25
7:32
+0:10
Half
13.11 mi12:58:251:38:327:315:07
7:30
-0:02
25K
15.53 mi13:16:591:57:067:3218:34
7:39
+0:09
30K
18.64 mi13:41:292:21:367:3624:30
7:53
+0:14
20M
20.00 mi13:52:162:32:237:3710:47
7:56
+0:03
21M
21.00 mi14:00:322:40:397:398:16
8:16
+0:20
35K
21.75 mi14:06:132:46:207:395:41
7:36
-0:40
23M
23.00 mi14:16:092:56:167:409:56
7:56
+0:20
24M
24.00 mi14:24:083:04:157:417:59
7:59
+0:03
40K
24.85 mi14:31:063:11:137:426:58
8:09
+0:10
25.2M
25.20 mi14:34:083:14:157:433:02
8:48
+0:39
Finish
26.22 mi14:42:003:22:077:437:52
7:43
-1:05

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

7:22 /mi

Average Pace

7:43 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:51

91% of race

Time at Steady Pace

15:14

8% of race

Time at Slower Pace

3:02

2% of race

Average Pace: 7:43 /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 mi11:44:0224:097:4624:09
7:46
#12091
10K
6.21 mi12:07:0147:087:3522:59
7:24
#10775
15K
9.32 mi12:29:531:10:007:3122:52
7:22
#10151
20K
12.43 mi12:53:181:33:257:3123:25
7:32
#9983
Half
13.11 mi12:58:251:38:327:315:07
7:30
#9982
25K
15.53 mi13:16:591:57:067:3218:34
7:39
#9952
30K
18.64 mi13:41:292:21:367:3624:30
7:53
#9938
20M
20.00 mi13:52:162:32:237:3710:47
7:56
#9889
21M
21.00 mi14:00:322:40:397:398:16
8:16
#9802
35K
21.75 mi14:06:132:46:207:395:41
7:36
#9778
23M
23.00 mi14:16:092:56:167:409:56
7:56
#9711
24M
24.00 mi14:24:083:04:157:417:59
7:59
#9746
40K
24.85 mi14:31:063:11:137:426:58
8:09
#9782
25.2M
25.20 mi14:34:083:14:157:433:02
8:48
#9790
Finish
26.22 mi14:42:003:22:077:437:52
7:43
#9763
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi12091914891489013(Top 34%)7548(Top 50%)7548(Top 337%)
10K6.21 mi3.10 mi10775+13168547+6018547+6019598(Top 36%)7926(Top 52%)7926(Top 354%)
15K9.32 mi3.11 mi10151+6248252+2958252+2959013(Top 34%)7548(Top 50%)7548(Top 337%)
20K12.43 mi3.11 mi9983+1688142+1108142+1109607(Top 36%)7860(Top 52%)7860(Top 351%)
Half13.11 mi0.68 mi9982+18138+48138+410179(Top 38%)8191(Top 54%)8191(Top 366%)
25K15.53 mi2.42 mi9952+308107+318107+319947(Top 37%)7950(Top 52%)7950(Top 355%)
30K18.64 mi3.11 mi9938+148060+478060+4710014(Top 38%)7833(Top 52%)7833(Top 350%)
20M20.00 mi1.36 mi9889+498006+548006+549774(Top 37%)7623(Top 50%)7623(Top 340%)
21M21.00 mi1.00 mi9802+877936+707936+709007(Top 34%)7076(Top 47%)7076(Top 316%)
35K21.75 mi0.75 mi9778+247908+287908+289233(Top 35%)7210(Top 48%)7210(Top 322%)
23M23.00 mi1.25 mi9711+677834+747834+749283(Top 35%)7115(Top 47%)7115(Top 317%)
24M24.00 mi1.00 mi9746-357825+97825+911092(Top 42%)7934(Top 52%)7934(Top 354%)
40K24.85 mi0.85 mi9782-367811+147811+1410993(Top 41%)7832(Top 52%)7832(Top 349%)
25.2M25.20 mi0.35 mi9790-87800+117800+1111230(Top 42%)7893(Top 52%)7893(Top 352%)
Finish26.22 mi1.02 mi9763+277762+387762+3810073(Top 38%)7327(Top 48%)7327(Top 327%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9013

Males

7548

M40-44

7548

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9598

Males

7926

M40-44

7926

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9013

Males

7548

M40-44

7548

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9607

Males

7860

M40-44

7860

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10179

Males

8191

M40-44

8191

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

9947

Males

7950

M40-44

7950

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

10014

Males

7833

M40-44

7833

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9774

Males

7623

M40-44

7623

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9007

Males

7076

M40-44

7076

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9233

Males

7210

M40-44

7210

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9283

Males

7115

M40-44

7115

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11092

Males

7934

M40-44

7934

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

10993

Males

7832

M40-44

7832

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11230

Males

7893

M40-44

7893

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10073

Males

7327

M40-44

7327

Passing Analysis

Category:
Athletes Passed
3198*
Passed By
870
Net Change
+2328
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12091
5K → 10K134832+1316#12091#10775
10K → 15K64622+624#10775#10151
15K → 20K257*89+168#10151#9983
20K → Half2928+1#9983#9982
Half → 25K132102+30#9982#9952
25K → 30K157*143+14#9952#9938
30K → 20M11061+49#9938#9889
20M → 21M12336+87#9889#9802
21M → 35K5430+24#9802#9778
35K → 23M12154+67#9778#9711
23M → 24M5287-35#9711#9746
24M → 40K55*91-36#9746#9782
40K → 25.2M3038-8#9782#9790
25.2M → Finish84*57+27#9790#9763
TOTALS3198*870+2328

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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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