Boston Marathon logo
BOSTON MARATHON 2023

Matt Katz

Bib: 10465•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 34%
Division (M45-49)
#0 / 2252
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:09
Rank: #4773
Start → 5K
21:09 | 6:48/mi
10K· 6.21 mi
43:22
Rank: #6377 (-1604)
5K → 10K
22:13 | 7:09/mi
15K· 9.32 mi
1:05:45
Rank: #6802 (-425)
10K → 15K
22:23 | 7:12/mi
20K· 12.43 mi
1:29:04
Rank: #7322 (-520)
15K → 20K
23:19 | 7:30/mi
Half· 13.11 mi
1:34:00
Rank: #7352 (-30)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:52:28
Rank: #7650 (-298)
Half → 25K
18:28 | 7:37/mi
30K· 18.64 mi
2:16:49
Rank: #7933 (-283)
25K → 30K
24:21 | 7:50/mi
20M
2:27:54
Rank: #8137 (-204)
30K → 20M
11:05 | 8:09/mi
21M
2:36:03
Rank: #8117 (+20)
20M → 21M
8:09 | 8:09/mi
35K· 21.75 mi
2:41:39
Rank: #8119 (-2)
21M → 35K
5:36 | 7:29/mi
23M
2:51:53
Rank: #8248 (-129)
35K → 23M
10:14 | 8:10/mi
24M
2:59:36
Rank: #8279 (-31)
23M → 24M
7:43 | 7:43/mi
40K· 24.85 mi
3:06:21
Rank: #8289 (-10)
24M → 40K
6:45 | 7:54/mi
25.2M
3:09:18
Rank: #8302 (-13)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:17:14
Rank: #8367 (-65)
25.2M → Finish
7:56 | 7:47/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
Time1:34:00
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:43:14
Pace7:52 /mi
📊Positive Split: 9.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3921:096:4821:09
6:48
-
10K
6.21 mi10:45:5243:226:5922:13
7:09
+0:21
15K
9.32 mi11:08:151:05:457:0322:23
7:12
+0:03
20K
12.43 mi11:31:341:29:047:1023:19
7:30
+0:18
Half
13.11 mi11:36:301:34:007:104:56
7:14
-0:16
25K
15.53 mi11:54:581:52:287:1418:28
7:37
+0:23
30K
18.64 mi12:19:192:16:497:2024:21
7:50
+0:13
20M
20.00 mi12:30:242:27:547:2411:05
8:09
+0:19
21M
21.00 mi12:38:332:36:037:268:09
8:09
0:00
35K
21.75 mi12:44:092:41:397:265:36
7:29
-0:40
23M
23.00 mi12:54:232:51:537:2810:14
8:10
+0:41
24M
24.00 mi13:02:062:59:367:297:43
7:43
-0:27
40K
24.85 mi13:08:513:06:217:306:45
7:54
+0:11
25.2M
25.20 mi13:11:483:09:187:312:57
8:33
+0:39
Finish
26.22 mi13:19:443:17:147:327:56
7:47
-0:46

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

6:48 /mi

Average Pace

7:32 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:17

39% of race

Time at Steady Pace

1:28:32

45% of race

Time at Slower Pace

32:25

16% of race

Average Pace: 7:31 /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 mi10:23:3921:096:4821:09
6:48
#4773
10K
6.21 mi10:45:5243:226:5922:13
7:09
#6377
15K
9.32 mi11:08:151:05:457:0322:23
7:12
#6802
20K
12.43 mi11:31:341:29:047:1023:19
7:30
#7322
Half
13.11 mi11:36:301:34:007:104:56
7:14
#7352
25K
15.53 mi11:54:581:52:287:1418:28
7:37
#7650
30K
18.64 mi12:19:192:16:497:2024:21
7:50
#7933
20M
20.00 mi12:30:242:27:547:2411:05
8:09
#8137
21M
21.00 mi12:38:332:36:037:268:09
8:09
#8117
35K
21.75 mi12:44:092:41:397:265:36
7:29
#8119
23M
23.00 mi12:54:232:51:537:2810:14
8:10
#8248
24M
24.00 mi13:02:062:59:367:297:43
7:43
#8279
40K
24.85 mi13:08:513:06:217:306:45
7:54
#8289
25.2M
25.20 mi13:11:483:09:187:312:57
8:33
#8302
Finish
26.22 mi13:19:443:17:147:327:56
7:47
#8367
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4773444344437826(Top 29%)6803(Top 45%)6803(Top 302%)
10K6.21 mi3.10 mi6377-16045778-13355778-13357774(Top 29%)6791(Top 45%)6791(Top 302%)
15K9.32 mi3.11 mi6802-4256106-3286106-3287826(Top 29%)6803(Top 45%)6803(Top 302%)
20K12.43 mi3.11 mi7322-5206482-3766482-3769329(Top 35%)7699(Top 51%)7699(Top 342%)
Half13.11 mi0.68 mi7352-306505-236505-238074(Top 30%)6946(Top 46%)6946(Top 308%)
25K15.53 mi2.42 mi7650-2986695-1906695-1909649(Top 36%)7784(Top 51%)7784(Top 346%)
30K18.64 mi3.11 mi7933-2836834-1396834-1399631(Top 36%)7627(Top 50%)7627(Top 339%)
20M20.00 mi1.36 mi8137-2046941-1076941-10711349(Top 43%)8413(Top 55%)8413(Top 374%)
21M21.00 mi1.00 mi8117+206912+296912+298360(Top 31%)6669(Top 44%)6669(Top 296%)
35K21.75 mi0.75 mi8119-26900+126900+128415(Top 32%)6746(Top 44%)6746(Top 300%)
23M23.00 mi1.25 mi8248-1296962-626962-6210952(Top 41%)7933(Top 52%)7933(Top 352%)
24M24.00 mi1.00 mi8279-316959+36959+39165(Top 34%)6968(Top 46%)6968(Top 309%)
40K24.85 mi0.85 mi8289-106945+146945+149268(Top 35%)6954(Top 46%)6954(Top 309%)
25.2M25.20 mi0.35 mi8302-136947-26947-29793(Top 37%)7179(Top 47%)7179(Top 319%)
Finish26.22 mi1.02 mi8367-656963-166963-1610535(Top 40%)7559(Top 50%)7559(Top 336%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

7826

Males

6803

M45-49

6803

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

7774

Males

6791

M45-49

6791

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

7826

Males

6803

M45-49

6803

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9329

Males

7699

M45-49

7699

20K→Half

12.4 - 13.1 mi

Top 30%
×2stories
+19ft-37ft

Overall

8074

Males

6946

M45-49

6946

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

9649

Males

7784

M45-49

7784

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9631

Males

7627

M45-49

7627

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11349

Males

8413

M45-49

8413

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8360

Males

6669

M45-49

6669

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

8415

Males

6746

M45-49

6746

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10952

Males

7933

M45-49

7933

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9165

Males

6968

M45-49

6968

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9268

Males

6954

M45-49

6954

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9793

Males

7179

M45-49

7179

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

10535

Males

7559

M45-49

7559

Passing Analysis

Category:
Athletes Passed
544
Passed By
4138
Net Change
-3594
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4773
5K → 10K41608-1604#4773#6377
10K → 15K29454-425#6377#6802
15K → 20K21541-520#6802#7322
20K → Half1141-30#7322#7352
Half → 25K26324-298#7352#7650
25K → 30K56339-283#7650#7933
30K → 20M40244-204#7933#8137
20M → 21M8161+20#8137#8117
21M → 35K4850-2#8117#8119
35K → 23M49178-129#8119#8248
23M → 24M5586-31#8248#8279
24M → 40K5262-10#8279#8289
40K → 25.2M2134-13#8289#8302
25.2M → Finish51116-65#8302#8367
TOTALS5444138-3594
📊

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