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BOSTON MARATHON 2023

Stephen Walsh

MA

Bib: 15368 M

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:20/mi
25:53
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:44/mi
53:00
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:59/mi
1:20:56
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:51/mi
1:48:27
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:55/mi
1:54:32
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:25/mi
2:17:23
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:34/mi
2:50:12
↑ 181↓ 1480.2%
138 ft elev
20M
12:10/mi
3:06:44
↑ 64↓ 500.2%
148 ft elev
21M
14:24/mi
3:21:08
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
12:17/mi
3:30:19
↑ 17↓ 861.7%
156 ft elev
23M
12:57/mi
3:46:32
↑ 23↓ 630.6%
116 ft elev
24M
14:36/mi
4:01:08
↓ 821.3%
34 ft elev
40K· 24.85 mi
13:14/mi
4:12:27
↓ 200.3%
20 ft elev
25.2M
14:13/mi
4:17:21
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:23/mi
4:28:57
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:32
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:34:25
Pace11:47 /mi
📊Positive Split: 34.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:4525:538:2025:53
8:20
-
10K
6.21 mi11:22:5253:008:3227:07
8:44
+0:24
15K
9.32 mi11:50:481:20:568:4127:56
8:59
+0:15
20K
12.43 mi12:18:191:48:278:4427:31
8:51
-0:08
Half
13.11 mi12:24:241:54:328:446:05
8:55
+0:04
25K
15.53 mi12:47:152:17:238:5122:51
9:25
+0:30
30K
18.64 mi13:20:042:50:129:0832:49
10:34
+1:09
20M
20.00 mi13:36:363:06:449:2016:32
12:10
+1:36
21M
21.00 mi13:51:003:21:089:3514:24
14:24
+2:14
35K
21.75 mi14:00:113:30:199:409:11
12:17
-2:07
23M
23.00 mi14:16:243:46:329:5116:13
12:57
+0:40
24M
24.00 mi14:31:004:01:0810:0314:36
14:36
+1:39
40K
24.85 mi14:42:194:12:2710:0911:19
13:14
-1:22
25.2M
25.20 mi14:47:134:17:2110:134:54
14:13
+0:59
Finish
26.22 mi14:58:494:28:5710:1611:36
11:23
-2:50

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

8:20 /mi

Average Pace

10:16 /mi

Slowest Pace

14:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:23

51% of race

Time at Steady Pace

1:10:08

26% of race

Time at Slower Pace

1:01:26

23% of race

Average Pace: 10:15 /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 mi10:55:4525:538:2025:53
8:20
#16354
10K
6.21 mi11:22:5253:008:3227:07
8:44
#18090
15K
9.32 mi11:50:481:20:568:4127:56
8:59
#18952
20K
12.43 mi12:18:191:48:278:4427:31
8:51
#18938
Half
13.11 mi12:24:241:54:328:446:05
8:55
#19011
25K
15.53 mi12:47:152:17:238:5122:51
9:25
#19324
30K
18.64 mi13:20:042:50:129:0832:49
10:34
#20196
20M
20.00 mi13:36:363:06:449:2016:32
12:10
#20728
21M
21.00 mi13:51:003:21:089:3514:24
14:24
#21277
35K
21.75 mi14:00:113:30:199:409:11
12:17
#21510
23M
23.00 mi14:16:243:46:329:5116:13
12:57
#21873
24M
24.00 mi14:31:004:01:0810:0314:36
14:36
#22305
40K
24.85 mi14:42:194:12:2710:0911:19
13:14
#22475
25.2M
25.20 mi14:47:134:17:2110:134:54
14:13
#22553
Finish
26.22 mi14:58:494:28:5710:1611:36
11:23
#22651
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi16354108361083620461(Top 77%)12509(Top 82%)12509(Top 880%)
10K6.21 mi3.10 mi18090-173611488-65211488-65219568(Top 74%)12122(Top 80%)12122(Top 852%)
15K9.32 mi3.11 mi18952-86211830-34211830-34220461(Top 77%)12509(Top 82%)12509(Top 880%)
20K12.43 mi3.11 mi18938+1411833-311833-318979(Top 71%)11887(Top 78%)11887(Top 836%)
Half13.11 mi0.68 mi19011-7311861-2811861-2820055(Top 75%)12349(Top 81%)12349(Top 868%)
25K15.53 mi2.42 mi19324-31311985-12411985-12420584(Top 77%)12529(Top 83%)12529(Top 881%)
30K18.64 mi3.11 mi20196-87212338-35312338-35322337(Top 84%)13221(Top 87%)13221(Top 930%)
20M20.00 mi1.36 mi20728-53212567-22912567-22924393(Top 92%)14086(Top 93%)14086(Top 991%)
21M21.00 mi1.00 mi21277-54912789-22212789-22225351(Top 95%)14545(Top 96%)14545(Top 1023%)
35K21.75 mi0.75 mi21510-23312896-10712896-10724942(Top 94%)14292(Top 94%)14292(Top 1005%)
23M23.00 mi1.25 mi21873-36313049-15313049-15325035(Top 94%)14356(Top 95%)14356(Top 1010%)
24M24.00 mi1.00 mi22305-43213235-18613235-18626296(Top 99%)14978(Top 99%)14978(Top 1053%)
40K24.85 mi0.85 mi22475-17013296-6113296-6125126(Top 94%)14361(Top 95%)14361(Top 1010%)
25.2M25.20 mi0.35 mi22553-7813326-3013326-3025141(Top 94%)14349(Top 95%)14349(Top 1009%)
Finish26.22 mi1.02 mi22651-9813364-3813364-3824527(Top 92%)14085(Top 93%)14085(Top 991%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

20461

Males

12509

M55-59

12509

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19568

Males

12122

M55-59

12122

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

20461

Males

12509

M55-59

12509

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18979

Males

11887

M55-59

11887

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

20055

Males

12349

M55-59

12349

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20584

Males

12529

M55-59

12529

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

22337

Males

13221

M55-59

13221

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

24393

Males

14086

M55-59

14086

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

25351

Males

14545

M55-59

14545

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

24942

Males

14292

M55-59

14292

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

25035

Males

14356

M55-59

14356

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

26296

Males

14978

M55-59

14978

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25126

Males

14361

M55-59

14361

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

25141

Males

14349

M55-59

14349

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24527

Males

14085

M55-59

14085

Passing Analysis

Category:
Athletes Passed
377
Passed By
6674
Net Change
-6297
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16354
5K → 10K271763-1736#16354#18090
10K → 15K25887-862#18090#18952
15K → 20K171157+14#18952#18938
20K → Half1083-73#18938#19011
Half → 25K57370-313#19011#19324
25K → 30K28900-872#19324#20196
30K → 20M11543-532#20196#20728
20M → 21M3552-549#20728#21277
21M → 35K6239-233#21277#21510
35K → 23M12375-363#21510#21873
23M → 24M1433-432#21873#22305
24M → 40K3173-170#22305#22475
40K → 25.2M381-78#22475#22553
25.2M → Finish20118-98#22553#22651
TOTALS3776674-6297
📊

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