Boston Marathon logo
BOSTON MARATHON 2023

Matthew Garfield

Bib: 1052•M

ME

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 7%
Division (M18-39)
#0 / 5285
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:17
Rank: #1148
Start → 5K
19:17 | 6:12/mi
10K· 6.21 mi
38:01
Rank: #1011 (+137)
5K → 10K
18:44 | 6:02/mi
15K· 9.32 mi
56:50
Rank: #955 (+56)
10K → 15K
18:49 | 6:03/mi
20K· 12.43 mi
1:15:57
Rank: #940 (+15)
15K → 20K
19:07 | 6:09/mi
Half· 13.11 mi
1:20:04
Rank: #937 (+3)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:35:05
Rank: #926 (+11)
Half → 25K
15:01 | 6:12/mi
30K· 18.64 mi
1:55:07
Rank: #952 (-26)
25K → 30K
20:02 | 6:27/mi
20M
2:04:04
Rank: #985 (-33)
30K → 20M
8:57 | 6:35/mi
21M
2:10:39
Rank: #957 (+28)
20M → 21M
6:35 | 6:35/mi
35K· 21.75 mi
2:15:22
Rank: #966 (-9)
21M → 35K
4:43 | 6:18/mi
23M
2:23:41
Rank: #987 (-21)
35K → 23M
8:19 | 6:39/mi
24M
2:30:12
Rank: #1014 (-27)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:35:54
Rank: #1034 (-20)
24M → 40K
5:42 | 6:40/mi
25.2M
2:38:23
Rank: #1054 (-20)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:44:50
Rank: #1068 (-14)
25.2M → Finish
6:27 | 6:20/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
Time1:20:04
Pace6:06 /mi
2nd Half
Distance13.11 mi
Time1:24:46
Pace6:28 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4619:176:1219:17
6:12
-
10K
6.21 mi10:38:3038:016:0718:44
6:02
-0:10
15K
9.32 mi10:57:1956:506:0618:49
6:03
+0:01
20K
12.43 mi11:16:261:15:576:0719:07
6:09
+0:06
Half
13.11 mi11:20:331:20:046:064:07
6:02
-0:07
25K
15.53 mi11:35:341:35:056:0715:01
6:12
+0:10
30K
18.64 mi11:55:361:55:076:1120:02
6:27
+0:15
20M
20.00 mi12:04:332:04:046:128:57
6:35
+0:08
21M
21.00 mi12:11:082:10:396:136:35
6:35
0:00
35K
21.75 mi12:15:512:15:226:134:43
6:18
-0:17
23M
23.00 mi12:24:102:23:416:158:19
6:39
+0:21
24M
24.00 mi12:30:412:30:126:166:31
6:31
-0:08
40K
24.85 mi12:36:232:35:546:165:42
6:40
+0:09
25.2M
25.20 mi12:38:522:38:236:172:29
7:12
+0:32
Finish
26.22 mi12:45:192:44:506:176:27
6:20
-0:52

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

6:02 /mi

Average Pace

6:17 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:28:20

90% of race

Time at Steady Pace

14:01

9% of race

Time at Slower Pace

2:29

2% of race

Average Pace: 6:17 /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 mi10:19:4619:176:1219:17
6:12
#1148
10K
6.21 mi10:38:3038:016:0718:44
6:02
#1011
15K
9.32 mi10:57:1956:506:0618:49
6:03
#955
20K
12.43 mi11:16:261:15:576:0719:07
6:09
#940
Half
13.11 mi11:20:331:20:046:064:07
6:02
#937
25K
15.53 mi11:35:341:35:056:0715:01
6:12
#926
30K
18.64 mi11:55:361:55:076:1120:02
6:27
#952
20M
20.00 mi12:04:332:04:046:128:57
6:35
#985
21M
21.00 mi12:11:082:10:396:136:35
6:35
#957
35K
21.75 mi12:15:512:15:226:134:43
6:18
#966
23M
23.00 mi12:24:102:23:416:158:19
6:39
#987
24M
24.00 mi12:30:412:30:126:166:31
6:31
#1014
40K
24.85 mi12:36:232:35:546:165:42
6:40
#1034
25.2M
25.20 mi12:38:522:38:236:172:29
7:12
#1054
Finish
26.22 mi12:45:192:44:506:176:27
6:20
#1068
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi114810861086836(Top 3%)790(Top 5%)790(Top 15%)
10K6.21 mi3.10 mi1011+137955+131955+131885(Top 3%)837(Top 6%)837(Top 16%)
15K9.32 mi3.11 mi955+56904+51904+51836(Top 3%)790(Top 5%)790(Top 15%)
20K12.43 mi3.11 mi940+15891+13891+13918(Top 3%)872(Top 6%)872(Top 16%)
Half13.11 mi0.68 mi937+3888+3888+3863(Top 3%)821(Top 5%)821(Top 16%)
25K15.53 mi2.42 mi926+11878+10878+10983(Top 4%)934(Top 6%)934(Top 18%)
30K18.64 mi3.11 mi952-26904-26904-261362(Top 5%)1304(Top 9%)1304(Top 25%)
20M20.00 mi1.36 mi985-33935-31935-311769(Top 7%)1685(Top 11%)1685(Top 32%)
21M21.00 mi1.00 mi957+28910+25910+25843(Top 3%)798(Top 5%)798(Top 15%)
35K21.75 mi0.75 mi966-9919-9919-91565(Top 6%)1485(Top 10%)1485(Top 28%)
23M23.00 mi1.25 mi987-21940-21940-211915(Top 7%)1816(Top 12%)1816(Top 34%)
24M24.00 mi1.00 mi1014-27964-24964-242137(Top 8%)2003(Top 13%)2003(Top 38%)
40K24.85 mi0.85 mi1034-20983-19983-192160(Top 8%)2011(Top 13%)2011(Top 38%)
25.2M25.20 mi0.35 mi1054-201002-191002-192445(Top 9%)2258(Top 15%)2258(Top 43%)
Finish26.22 mi1.02 mi1068-141017-151017-151720(Top 6%)1616(Top 11%)1616(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

836

Males

790

M18-39

790

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

885

Males

837

M18-39

837

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

836

Males

790

M18-39

790

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

918

Males

872

M18-39

872

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

863

Males

821

M18-39

821

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

983

Males

934

M18-39

934

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1362

Males

1304

M18-39

1304

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1769

Males

1685

M18-39

1685

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

843

Males

798

M18-39

798

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1565

Males

1485

M18-39

1485

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1915

Males

1816

M18-39

1816

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2137

Males

2003

M18-39

2003

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2160

Males

2011

M18-39

2011

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2445

Males

2258

M18-39

2258

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1720

Males

1616

M18-39

1616

Passing Analysis

Category:
Athletes Passed
390
Passed By
310
Net Change
+80
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1148
5K → 10K1458+137#1148#1011
10K → 15K637+56#1011#955
15K → 20K3621+15#955#940
20K → Half74+3#940#937
Half → 25K2615+11#937#926
25K → 30K2349-26#926#952
30K → 20M942-33#952#985
20M → 21M313+28#985#957
21M → 35K615-9#957#966
35K → 23M829-21#966#987
23M → 24M734-27#987#1014
24M → 40K1232-20#1014#1034
40K → 25.2M323-20#1034#1054
25.2M → Finish1428-14#1054#1068
TOTALS390310+80
📊

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