Boston Marathon logo
BOSTON MARATHON 2023

Todd Foy

Bib: 30537•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

Start
0:00:00
Race begins
5K· 3.11 mi
30:17
Rank: #22783
Start → 5K
30:17 | 9:45/mi
10K· 6.21 mi
59:50
Rank: #22687 (+96)
5K → 10K
29:33 | 9:31/mi
15K· 9.32 mi
1:28:27
Rank: #22277 (+410)
10K → 15K
28:37 | 9:13/mi
20K· 12.43 mi
1:57:53
Rank: #22062 (+215)
15K → 20K
29:26 | 9:28/mi
Half· 13.11 mi
2:04:17
Rank: #22045 (+17)
20K → Half
6:24 | 9:23/mi
25K· 15.53 mi
2:28:13
Rank: #22007 (+38)
Half → 25K
23:56 | 9:52/mi
30K· 18.64 mi
3:00:15
Rank: #21972 (+35)
25K → 30K
32:02 | 10:19/mi
20M
3:14:29
Rank: #21945 (+27)
30K → 20M
14:14 | 10:28/mi
21M
3:25:23
Rank: #21876 (+69)
20M → 21M
10:54 | 10:54/mi
35K· 21.75 mi
3:33:05
Rank: #21887 (-11)
21M → 35K
7:42 | 10:18/mi
23M
3:46:32
Rank: #21872 (+15)
35K → 23M
13:27 | 10:45/mi
24M
3:57:20
Rank: #21915 (-43)
23M → 24M
10:48 | 10:48/mi
40K· 24.85 mi
4:06:27
Rank: #21903 (+12)
24M → 40K
9:07 | 10:40/mi
25.2M
4:10:15
Rank: #21878 (+25)
40K → 25.2M
3:48 | 11:01/mi
Finish· 26.22 mi
4:20:04
Rank: #21847 (+31)
25.2M → Finish
9:49 | 9:38/mi

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
Time2:04:17
Pace9:29 /mi
2nd Half
Distance13.11 mi
Time2:15:47
Pace10:21 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1030:179:4530:17
9:45
-
10K
6.21 mi12:21:4359:509:3829:33
9:31
-0:14
15K
9.32 mi12:50:201:28:279:2928:37
9:13
-0:18
20K
12.43 mi13:19:461:57:539:2929:26
9:28
+0:15
Half
13.11 mi13:26:102:04:179:296:24
9:23
-0:05
25K
15.53 mi13:50:062:28:139:3223:56
9:52
+0:29
30K
18.64 mi14:22:083:00:159:4032:02
10:19
+0:27
20M
20.00 mi14:36:223:14:299:4314:14
10:28
+0:09
21M
21.00 mi14:47:163:25:239:4710:54
10:54
+0:26
35K
21.75 mi14:54:583:33:059:487:42
10:18
-0:36
23M
23.00 mi15:08:253:46:329:5113:27
10:45
+0:27
24M
24.00 mi15:19:133:57:209:5310:48
10:48
+0:03
40K
24.85 mi15:28:204:06:279:559:07
10:40
-0:08
25.2M
25.20 mi15:32:084:10:159:563:48
11:01
+0:21
Finish
26.22 mi15:41:574:20:049:569:49
9:38
-1:23

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

9:13 /mi

Average Pace

9:56 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:02

61% of race

Time at Steady Pace

1:27:20

34% of race

Time at Slower Pace

14:42

6% of race

Average Pace: 9:55 /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 mi11:52:1030:179:4530:17
9:45
#22783
10K
6.21 mi12:21:4359:509:3829:33
9:31
#22687
15K
9.32 mi12:50:201:28:279:2928:37
9:13
#22277
20K
12.43 mi13:19:461:57:539:2929:26
9:28
#22062
Half
13.11 mi13:26:102:04:179:296:24
9:23
#22045
25K
15.53 mi13:50:062:28:139:3223:56
9:52
#22007
30K
18.64 mi14:22:083:00:159:4032:02
10:19
#21972
20M
20.00 mi14:36:223:14:299:4314:14
10:28
#21945
21M
21.00 mi14:47:163:25:239:4710:54
10:54
#21876
35K
21.75 mi14:54:583:33:059:487:42
10:18
#21887
23M
23.00 mi15:08:253:46:329:5113:27
10:45
#21872
24M
24.00 mi15:19:133:57:209:5310:48
10:48
#21915
40K
24.85 mi15:28:204:06:279:559:07
10:40
#21903
25.2M
25.20 mi15:32:084:10:159:563:48
11:01
#21878
Finish
26.22 mi15:41:574:20:049:569:49
9:38
#21847
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi22783134901349021345(Top 80%)12902(Top 85%)12902(Top 244%)
10K6.21 mi3.10 mi22687+9613473+1713473+1722549(Top 85%)13412(Top 88%)13412(Top 254%)
15K9.32 mi3.11 mi22277+41013280+19313280+19321345(Top 80%)12902(Top 85%)12902(Top 244%)
20K12.43 mi3.11 mi22062+21513173+10713173+10721473(Top 81%)12941(Top 85%)12941(Top 245%)
Half13.11 mi0.68 mi22045+1713171+213171+221746(Top 82%)13067(Top 86%)13067(Top 247%)
25K15.53 mi2.42 mi22007+3813154+1713154+1721902(Top 82%)13094(Top 86%)13094(Top 248%)
30K18.64 mi3.11 mi21972+3513130+2413130+2421797(Top 82%)12985(Top 86%)12985(Top 246%)
20M20.00 mi1.36 mi21945+2713109+2113109+2121667(Top 81%)12854(Top 85%)12854(Top 243%)
21M21.00 mi1.00 mi21876+6913070+3913070+3920599(Top 77%)12341(Top 81%)12341(Top 234%)
35K21.75 mi0.75 mi21887-1113074-413074-421961(Top 82%)12911(Top 85%)12911(Top 244%)
23M23.00 mi1.25 mi21872+1513048+2613048+2621857(Top 82%)12837(Top 85%)12837(Top 243%)
24M24.00 mi1.00 mi21915-4313064-1613064-1622654(Top 85%)13182(Top 87%)13182(Top 249%)
40K24.85 mi0.85 mi21903+1213041+2313041+2321617(Top 81%)12647(Top 83%)12647(Top 239%)
25.2M25.20 mi0.35 mi21878+2513024+1713024+1720498(Top 77%)12165(Top 80%)12165(Top 230%)
Finish26.22 mi1.02 mi21847+3112999+2512999+2520584(Top 77%)12225(Top 81%)12225(Top 231%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

21345

Males

12902

M18-39

12902

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

22549

Males

13412

M18-39

13412

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

21345

Males

12902

M18-39

12902

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21473

Males

12941

M18-39

12941

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

21746

Males

13067

M18-39

13067

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21902

Males

13094

M18-39

13094

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21797

Males

12985

M18-39

12985

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21667

Males

12854

M18-39

12854

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

20599

Males

12341

M18-39

12341

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21961

Males

12911

M18-39

12911

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21857

Males

12837

M18-39

12837

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22654

Males

13182

M18-39

13182

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21617

Males

12647

M18-39

12647

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20498

Males

12165

M18-39

12165

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

20584

Males

12225

M18-39

12225

Passing Analysis

Category:
Athletes Passed
1693
Passed By
757
Net Change
+936
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22783
5K → 10K294198+96#22783#22687
10K → 15K43020+410#22687#22277
15K → 20K25237+215#22277#22062
20K → Half3821+17#22062#22045
Half → 25K11476+38#22045#22007
25K → 30K158123+35#22007#21972
30K → 20M7750+27#21972#21945
20M → 21M9526+69#21945#21876
21M → 35K2132-11#21876#21887
35K → 23M6752+15#21887#21872
23M → 24M2265-43#21872#21915
24M → 40K4331+12#21915#21903
40K → 25.2M305+25#21903#21878
25.2M → Finish5221+31#21878#21847
TOTALS1693757+936
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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