Boston Marathon logo
BOSTON MARATHON 2023

Patrick Tam

CA

Bib: 12605 M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 34%
Gender (Male)
#0 / 15176
Top 48%
Masters (Masters Men)
#0 / 9891
Top 36%
Division (M45-49)
#0 / 2252
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
7:30/mi
23:17
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:30/mi
46:35
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:31/mi
1:09:55
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:33/mi
1:33:21
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:26/mi
1:38:25
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:40/mi
1:57:01
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:59/mi
2:21:49
↑ 181↓ 1480.2%
138 ft elev
20M
7:58/mi
2:32:38
↑ 64↓ 500.2%
148 ft elev
21M
8:08/mi
2:40:46
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:17/mi
2:46:13
↑ 17↓ 861.7%
156 ft elev
23M
7:48/mi
2:55:59
↑ 23↓ 630.6%
116 ft elev
24M
7:20/mi
3:03:19
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:23/mi
3:09:38
↓ 200.3%
20 ft elev
25.2M
7:29/mi
3:12:13
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:48/mi
3:19:09
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:38:257:30 /mi⚡ faster
2nd Half
1:40:447:41 /mi+2.4%
Positive split — 2.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:177:303.11 mi23:17
7:30
-
10K
46:357:303.10 mi23:18
7:30
0:00
15K
1:09:557:303.11 mi23:20
7:31
+0:01
20K
1:33:217:313.11 mi23:26
7:33
+0:02
Half(13.11 mi)
1:38:257:300.68 mi5:04
7:26
-0:07
25K
1:57:017:322.42 mi18:36
7:40
+0:14
30K
2:21:497:363.11 mi24:48
7:59
+0:19
20M
2:32:387:381.36 mi10:49
7:58
-0:01
21M
2:40:467:391.00 mi8:08
8:08
+0:10
35K
2:46:137:390.75 mi5:27
7:17
-0:51
23M
2:55:597:391.25 mi9:46
7:48
+0:31
24M
3:03:197:381.00 mi7:20
7:20
-0:28
40K
3:09:387:380.85 mi6:19
7:23
+0:03
25.2M
3:12:137:380.35 mi2:35
7:29
+0:06
Finish(26.22 mi)
3:19:097:361.02 mi6:56
6:48
-0:41
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:48 /mi

Average Pace

7:36 /mi

Slowest Pace

8:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

31:06

16% of race

Time at Steady Pace

2:39:55

80% of race

Time at Slower Pace

8:08

4% of race

Average Pace: 7:36 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi9563790579051024382688268
10K3.10 mi9987-4248138-2338138-2331042483928392
15K3.11 mi10057-708195-578195-571024382688268
20K3.11 mi9928+1298106+898106+89964078767876
Half(13.11 mi)0.68 mi9908+208098+88098+8956178427842
25K2.42 mi9909-18079+198079+191005380118011
30K3.11 mi10026-1178111-328111-321073082038203
20M1.36 mi9989+378062+498062+49994077227722
21M1.00 mi9854+1357961+1017961+101818565836583
35K0.75 mi9732+1227880+817880+81704559305930
23M1.25 mi9617+1157775+1057775+105840466466646
24M1.00 mi9473+1447675+1007675+100661255025502
40K0.85 mi9279+1947529+1467529+146600750315031
25.2M0.35 mi9173+1067459+707459+70391635063506
Finish(26.22 mi)1.02 mi8926+2477305+1547305+154411036313631

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10243

Males

8268

M45-49

8268

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10424

Males

8392

M45-49

8392

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10243

Males

8268

M45-49

8268

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9640

Males

7876

M45-49

7876

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9561

Males

7842

M45-49

7842

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10053

Males

8011

M45-49

8011

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10730

Males

8203

M45-49

8203

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9940

Males

7722

M45-49

7722

20M→21M

20.0 - 21.0 mi

Top 31%
×8story building
+106ft-24ft

Overall

8185

Males

6583

M45-49

6583

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

7045

Males

5930

M45-49

5930

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8404

Males

6646

M45-49

6646

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6612

Males

5502

M45-49

5502

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6007

Males

5031

M45-49

5031

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3916

Males

3506

M45-49

3506

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4110

Males

3631

M45-49

3631

Passing Analysis

Category:
Passed
2061*
Passed By
1420
Net Change
+637
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9563
5K → 10K148572-424#9563#9987
10K → 15K155223-70#9987#10057
15K → 20K242*113+129#10057#9928
20K → Half3919+20#9928#9908
Half → 25K114114-1#9908#9909
25K → 30K117234-117#9909#10026
30K → 20M107*70+37#10026#9989
20M → 21M15822+135#9989#9854
21M → 35K1231+122#9854#9732
35K → 23M15540+115#9732#9617
23M → 24M1506+144#9617#9473
24M → 40K199*5+194#9473#9279
40K → 25.2M1060+106#9279#9173
25.2M → Finish2481+247#9173#8926
TOTALS2061*1420+637

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

Passing Charts

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing