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BOSTON MARATHON 2023

Brian Williams

Bib: 27498•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
9:15/mi
28:43
↑ 97↓ 3451.5%
10K· 6.21 mi
8:35/mi
55:22
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:21:49
↑ 67↓ 78
20K· 12.43 mi
8:51/mi
1:49:19
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:55:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:16:57
↑ 66↓ 880.2%
30K· 18.64 mi
9:21/mi
2:46:00
↑ 181↓ 1480.2%
20M
10:19/mi
3:00:01
↑ 64↓ 500.2%
21M
11:28/mi
3:11:29
↑ 106↓ 241.6%
35K· 21.75 mi
10:06/mi
3:19:02
↑ 17↓ 861.7%
23M
11:34/mi
3:33:31
↑ 23↓ 630.6%
24M
10:38/mi
3:44:09
↓ 821.3%
40K· 24.85 mi
10:53/mi
3:53:27
↓ 200.3%
25.2M
11:48/mi
3:57:31
↑ 13↓ 160.2%
Finish· 26.22 mi
10:00/mi
4:07:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:18
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:12:24
Pace10:06 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5428:439:1528:43
9:15
-
10K
6.21 mi12:16:3355:228:5526:39
8:35
-0:40
15K
9.32 mi12:43:001:21:498:4726:27
8:31
-0:04
20K
12.43 mi13:10:301:49:198:4827:30
8:51
+0:20
Half
13.11 mi13:16:291:55:188:485:59
8:46
-0:05
25K
15.53 mi13:38:082:16:578:4921:39
8:56
+0:10
30K
18.64 mi14:07:112:46:008:5429:03
9:21
+0:25
20M
20.00 mi14:21:123:00:019:0014:01
10:19
+0:58
21M
21.00 mi14:32:403:11:299:0711:28
11:28
+1:09
35K
21.75 mi14:40:133:19:029:097:33
10:06
-1:22
23M
23.00 mi14:54:423:33:319:1714:29
11:34
+1:28
24M
24.00 mi15:05:203:44:099:2010:38
10:38
-0:56
40K
24.85 mi15:14:383:53:279:249:18
10:53
+0:15
25.2M
25.20 mi15:18:423:57:319:264:04
11:48
+0:55
Finish
26.22 mi15:28:534:07:429:2710:11
10:00
-1:48

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

8:31 /mi

Average Pace

9:27 /mi

Slowest Pace

11:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:00

67% of race

Time at Steady Pace

31:45

13% of race

Time at Slower Pace

49:57

20% of race

Average Pace: 9:27 /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 mi11:49:5428:439:1528:43
9:15
#21341
10K
6.21 mi12:16:3355:228:5526:39
8:35
#20255
15K
9.32 mi12:43:001:21:498:4726:27
8:31
#19488
20K
12.43 mi13:10:301:49:198:4827:30
8:51
#19300
Half
13.11 mi13:16:291:55:188:485:59
8:46
#19291
25K
15.53 mi13:38:082:16:578:4921:39
8:56
#19173
30K
18.64 mi14:07:112:46:008:5429:03
9:21
#19130
20M
20.00 mi14:21:123:00:019:0014:01
10:19
#19370
21M
21.00 mi14:32:403:11:299:0711:28
11:28
#19587
35K
21.75 mi14:40:133:19:029:097:33
10:06
#19687
23M
23.00 mi14:54:423:33:319:1714:29
11:34
#20076
24M
24.00 mi15:05:203:44:099:2010:38
10:38
#20205
40K
24.85 mi15:14:383:53:279:249:18
10:53
#20267
25.2M
25.20 mi15:18:423:57:319:264:04
11:48
#20312
Finish
26.22 mi15:28:534:07:429:2710:11
10:00
#20353
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi21341127701277017901(Top 67%)11445(Top 75%)11445(Top 805%)
10K6.21 mi3.10 mi20255+108612338+43212338+43218712(Top 70%)11788(Top 78%)11788(Top 829%)
15K9.32 mi3.11 mi19488+76712028+31012028+31017901(Top 67%)11445(Top 75%)11445(Top 805%)
20K12.43 mi3.11 mi19300+18811975+5311975+5318947(Top 71%)11868(Top 78%)11868(Top 835%)
Half13.11 mi0.68 mi19291+911976-111976-119334(Top 73%)12040(Top 79%)12040(Top 847%)
25K15.53 mi2.42 mi19173+11811932+4411932+4418599(Top 70%)11675(Top 77%)11675(Top 821%)
30K18.64 mi3.11 mi19130+4311897+3511897+3518827(Top 71%)11713(Top 77%)11713(Top 824%)
20M20.00 mi1.36 mi19370-24011979-8211979-8221293(Top 80%)12694(Top 84%)12694(Top 893%)
21M21.00 mi1.00 mi19587-21712060-8112060-8121816(Top 82%)12898(Top 85%)12898(Top 907%)
35K21.75 mi0.75 mi19687-10012100-4012100-4021524(Top 81%)12719(Top 84%)12719(Top 894%)
23M23.00 mi1.25 mi20076-38912242-14212242-14223359(Top 88%)13555(Top 89%)13555(Top 953%)
24M24.00 mi1.00 mi20205-12912290-4812290-4822291(Top 84%)13013(Top 86%)13013(Top 915%)
40K24.85 mi0.85 mi20267-6212305-1512305-1522085(Top 83%)12871(Top 85%)12871(Top 905%)
25.2M25.20 mi0.35 mi20312-4512321-1612321-1622104(Top 83%)12894(Top 85%)12894(Top 907%)
Finish26.22 mi1.02 mi20353-4112331-1012331-1021729(Top 82%)12735(Top 84%)12735(Top 896%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17901

Males

11445

M55-59

11445

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18712

Males

11788

M55-59

11788

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17901

Males

11445

M55-59

11445

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18947

Males

11868

M55-59

11868

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19334

Males

12040

M55-59

12040

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18599

Males

11675

M55-59

11675

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

18827

Males

11713

M55-59

11713

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21293

Males

12694

M55-59

12694

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

21816

Males

12898

M55-59

12898

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

21524

Males

12719

M55-59

12719

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

23359

Males

13555

M55-59

13555

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

22291

Males

13013

M55-59

13013

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22085

Males

12871

M55-59

12871

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22104

Males

12894

M55-59

12894

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21729

Males

12735

M55-59

12735

Passing Analysis

Category:
Athletes Passed
2731
Passed By
1743
Net Change
+988
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21341
5K → 10K112539+1086#21341#20255
10K → 15K78518+767#20255#19488
15K → 20K25567+188#19488#19300
20K → Half2718+9#19300#19291
Half → 25K18264+118#19291#19173
25K → 30K187144+43#19173#19130
30K → 20M31271-240#19130#19370
20M → 21M34251-217#19370#19587
21M → 35K17117-100#19587#19687
35K → 23M14403-389#19687#20076
23M → 24M20149-129#20076#20205
24M → 40K1981-62#20205#20267
40K → 25.2M752-45#20267#20312
25.2M → Finish2869-41#20312#20353
TOTALS27311743+988
📊

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