Boston Marathon logo
BOSTON MARATHON 2023

Neil Sheehan

Bib: 29594•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
9:29/mi
29:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
56:55
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:24:07
↑ 67↓ 78
20K· 12.43 mi
9:06/mi
1:52:24
↑ 106↓ 860.1%
Half· 13.11 mi
9:14/mi
1:58:42
↑ 19↓ 370.5%
25K· 15.53 mi
9:42/mi
2:22:14
↑ 66↓ 880.2%
30K· 18.64 mi
10:32/mi
2:54:58
↑ 181↓ 1480.2%
20M
11:04/mi
3:10:01
↑ 64↓ 500.2%
21M
11:29/mi
3:21:30
↑ 106↓ 241.6%
35K· 21.75 mi
10:58/mi
3:29:42
↑ 17↓ 861.7%
23M
11:09/mi
3:43:40
↑ 23↓ 630.6%
24M
10:48/mi
3:54:28
↓ 821.3%
40K· 24.85 mi
10:51/mi
4:03:45
↓ 200.3%
25.2M
10:58/mi
4:07:32
↑ 13↓ 160.2%
Finish· 26.22 mi
8:37/mi
4:16:19
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:42
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:17:37
Pace10:30 /mi
📊Positive Split: 15.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:5629:289:2929:28
9:29
-
10K
6.21 mi12:15:2356:559:1027:27
8:50
-0:39
15K
9.32 mi12:42:351:24:079:0127:12
8:45
-0:05
20K
12.43 mi13:10:521:52:249:0328:17
9:06
+0:21
Half
13.11 mi13:17:101:58:429:036:18
9:14
+0:08
25K
15.53 mi13:40:422:22:149:0923:32
9:42
+0:28
30K
18.64 mi14:13:262:54:589:2332:44
10:32
+0:50
20M
20.00 mi14:28:293:10:019:3015:03
11:04
+0:32
21M
21.00 mi14:39:583:21:309:3611:29
11:29
+0:25
35K
21.75 mi14:48:103:29:429:398:12
10:58
-0:31
23M
23.00 mi15:02:083:43:409:4313:58
11:09
+0:11
24M
24.00 mi15:12:563:54:289:4610:48
10:48
-0:21
40K
24.85 mi15:22:134:03:459:489:17
10:51
+0:03
25.2M
25.20 mi15:26:004:07:329:493:47
10:58
+0:07
Finish
26.22 mi15:34:474:16:199:478:47
8:37
-2:21

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

8:37 /mi

Average Pace

9:47 /mi

Slowest Pace

11:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:01

59% of race

Time at Steady Pace

1:04:48

25% of race

Time at Slower Pace

40:30

16% of race

Average Pace: 9:47 /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 mi11:47:5629:289:2929:28
9:29
#22035
10K
6.21 mi12:15:2356:559:1027:27
8:50
#21278
15K
9.32 mi12:42:351:24:079:0127:12
8:45
#20686
20K
12.43 mi13:10:521:52:249:0328:17
9:06
#20556
Half
13.11 mi13:17:101:58:429:036:18
9:14
#20594
25K
15.53 mi13:40:422:22:149:0923:32
9:42
#20789
30K
18.64 mi14:13:262:54:589:2332:44
10:32
#21133
20M
20.00 mi14:28:293:10:019:3015:03
11:04
#21284
21M
21.00 mi14:39:583:21:309:3611:29
11:29
#21329
35K
21.75 mi14:48:103:29:429:398:12
10:58
#21432
23M
23.00 mi15:02:083:43:409:4313:58
11:09
#21533
24M
24.00 mi15:12:563:54:289:4610:48
10:48
#21586
40K
24.85 mi15:22:134:03:459:489:17
10:51
#21632
25.2M
25.20 mi15:26:004:07:329:493:47
10:58
#21603
Finish
26.22 mi15:34:474:16:199:478:47
8:37
#21435
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22035131171311719261(Top 72%)11995(Top 79%)11995(Top 227%)
10K6.21 mi3.10 mi21278+75712792+32512792+32520104(Top 76%)12329(Top 81%)12329(Top 233%)
15K9.32 mi3.11 mi20686+59212549+24312549+24319261(Top 72%)11995(Top 79%)11995(Top 227%)
20K12.43 mi3.11 mi20556+13012509+4012509+4020155(Top 76%)12384(Top 82%)12384(Top 234%)
Half13.11 mi0.68 mi20594-3812529-2012529-2021255(Top 80%)12848(Top 85%)12848(Top 243%)
25K15.53 mi2.42 mi20789-19512626-9712626-9721470(Top 81%)12907(Top 85%)12907(Top 244%)
30K18.64 mi3.11 mi21133-34412761-13512761-13522277(Top 84%)13196(Top 87%)13196(Top 250%)
20M20.00 mi1.36 mi21284-15112805-4412805-4422820(Top 86%)13377(Top 88%)13377(Top 253%)
21M21.00 mi1.00 mi21329-4512817-1212817-1221845(Top 82%)12910(Top 85%)12910(Top 244%)
35K21.75 mi0.75 mi21432-10312858-4112858-4123222(Top 87%)13488(Top 89%)13488(Top 255%)
23M23.00 mi1.25 mi21533-10112895-3712895-3722640(Top 85%)13218(Top 87%)13218(Top 250%)
24M24.00 mi1.00 mi21586-5312901-612901-622651(Top 85%)13179(Top 87%)13179(Top 249%)
40K24.85 mi0.85 mi21632-4612916-1512916-1522045(Top 83%)12851(Top 85%)12851(Top 243%)
25.2M25.20 mi0.35 mi21603+2912895+2112895+2120376(Top 77%)12103(Top 80%)12103(Top 229%)
Finish26.22 mi1.02 mi21435+16812808+8712808+8716080(Top 60%)10209(Top 67%)10209(Top 193%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19261

Males

11995

M18-39

11995

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

20104

Males

12329

M18-39

12329

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19261

Males

11995

M18-39

11995

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

20155

Males

12384

M18-39

12384

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

21255

Males

12848

M18-39

12848

Half→25K

13.1 - 15.5 mi

Top 81%
×4story building
+66ft-88ft

Overall

21470

Males

12907

M18-39

12907

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

22277

Males

13196

M18-39

13196

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

22820

Males

13377

M18-39

13377

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

21845

Males

12910

M18-39

12910

21M→35K

21.0 - 21.8 mi

Top 87%
×7story building
+17ft-86ft

Overall

23222

Males

13488

M18-39

13488

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

22640

Males

13218

M18-39

13218

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

22651

Males

13179

M18-39

13179

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22045

Males

12851

M18-39

12851

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20376

Males

12103

M18-39

12103

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

16080

Males

10209

M18-39

10209

Passing Analysis

Category:
Athletes Passed
2154
Passed By
1554
Net Change
+600
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22035
5K → 10K79740+757#22035#21278
10K → 15K61119+592#21278#20686
15K → 20K231101+130#20686#20556
20K → Half1553-38#20556#20594
Half → 25K51246-195#20594#20789
25K → 30K61405-344#20789#21133
30K → 20M35186-151#21133#21284
20M → 21M4792-45#21284#21329
21M → 35K12115-103#21329#21432
35K → 23M35136-101#21432#21533
23M → 24M2982-53#21533#21586
24M → 40K2571-46#21586#21632
40K → 25.2M367+29#21632#21603
25.2M → Finish1691+168#21603#21435
TOTALS21541554+600
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing