Boston Marathon logo
BOSTON MARATHON 2023

Matthew Simonelli

Bib: 3785•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 11%
Division (M18-39)
#0 / 5285
Top 24%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:20
Rank: #2512
Start → 5K
20:20 | 6:33/mi
10K· 6.21 mi
40:05
Rank: #2232 (+280)
5K → 10K
19:45 | 6:21/mi
15K· 9.32 mi
59:52
Rank: #2112 (+120)
10K → 15K
19:47 | 6:22/mi
20K· 12.43 mi
1:19:41
Rank: #1997 (+115)
15K → 20K
19:49 | 6:23/mi
Half· 13.11 mi
1:24:02
Rank: #1992 (+5)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:39:48
Rank: #2013 (-21)
Half → 25K
15:46 | 6:30/mi
30K· 18.64 mi
2:00:55
Rank: #2153 (-140)
25K → 30K
21:07 | 6:48/mi
20M
2:10:29
Rank: #2255 (-102)
30K → 20M
9:34 | 7:02/mi
21M
2:17:13
Rank: #2173 (+82)
20M → 21M
6:44 | 6:44/mi
35K· 21.75 mi
2:21:53
Rank: #2133 (+40)
21M → 35K
4:40 | 6:14/mi
23M
2:29:46
Rank: #1990 (+143)
35K → 23M
7:53 | 6:18/mi
24M
2:35:53
Rank: #1904 (+86)
23M → 24M
6:07 | 6:07/mi
40K· 24.85 mi
2:41:16
Rank: #1848 (+56)
24M → 40K
5:23 | 6:18/mi
25.2M
2:43:26
Rank: #1788 (+60)
40K → 25.2M
2:10 | 6:17/mi
Finish· 26.22 mi
2:49:24
Rank: #1675 (+113)
25.2M → Finish
5:58 | 5:51/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
Time1:24:02
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:25:22
Pace6:31 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5520:206:3320:20
6:33
-
10K
6.21 mi10:41:4040:056:2719:45
6:21
-0:12
15K
9.32 mi11:01:2759:526:2519:47
6:22
+0:01
20K
12.43 mi11:21:161:19:416:2519:49
6:23
+0:01
Half
13.11 mi11:25:371:24:026:254:21
6:23
0:00
25K
15.53 mi11:41:231:39:486:2515:46
6:30
+0:07
30K
18.64 mi12:02:302:00:556:2921:07
6:48
+0:18
20M
20.00 mi12:12:042:10:296:319:34
7:02
+0:14
21M
21.00 mi12:18:482:17:136:326:44
6:44
-0:18
35K
21.75 mi12:23:282:21:536:314:40
6:14
-0:30
23M
23.00 mi12:31:212:29:466:317:53
6:18
+0:04
24M
24.00 mi12:37:282:35:536:306:07
6:07
-0:11
40K
24.85 mi12:42:512:41:166:295:23
6:18
+0:11
25.2M
25.20 mi12:45:012:43:266:292:10
6:17
-0:01
Finish
26.22 mi12:50:592:49:246:285:58
5:51
-0:26

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

5:51 /mi

Average Pace

6:28 /mi

Slowest Pace

7:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:05

7% of race

Time at Steady Pace

1:39:34

59% of race

Time at Slower Pace

57:45

34% of race

Average Pace: 6:28 /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 mi10:21:5520:206:3320:20
6:33
#2512
10K
6.21 mi10:41:4040:056:2719:45
6:21
#2232
15K
9.32 mi11:01:2759:526:2519:47
6:22
#2112
20K
12.43 mi11:21:161:19:416:2519:49
6:23
#1997
Half
13.11 mi11:25:371:24:026:254:21
6:23
#1992
25K
15.53 mi11:41:231:39:486:2515:46
6:30
#2013
30K
18.64 mi12:02:302:00:556:2921:07
6:48
#2153
20M
20.00 mi12:12:042:10:296:319:34
7:02
#2255
21M
21.00 mi12:18:482:17:136:326:44
6:44
#2173
35K
21.75 mi12:23:282:21:536:314:40
6:14
#2133
23M
23.00 mi12:31:212:29:466:317:53
6:18
#1990
24M
24.00 mi12:37:282:35:536:306:07
6:07
#1904
40K
24.85 mi12:42:512:41:166:295:23
6:18
#1848
25.2M
25.20 mi12:45:012:43:266:292:10
6:17
#1788
Finish
26.22 mi12:50:592:49:246:285:58
5:51
#1675
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2512239723971943(Top 7%)1861(Top 12%)1861(Top 35%)
10K6.21 mi3.10 mi2232+2802134+2632134+2632014(Top 8%)1925(Top 13%)1925(Top 36%)
15K9.32 mi3.11 mi2112+1202025+1092025+1091943(Top 7%)1861(Top 12%)1861(Top 35%)
20K12.43 mi3.11 mi1997+1151912+1131912+1131704(Top 6%)1630(Top 11%)1630(Top 31%)
Half13.11 mi0.68 mi1992+51908+41908+42075(Top 8%)1991(Top 13%)1991(Top 38%)
25K15.53 mi2.42 mi2013-211930-221930-222169(Top 8%)2080(Top 14%)2080(Top 39%)
30K18.64 mi3.11 mi2153-1402065-1352065-1352945(Top 11%)2787(Top 18%)2787(Top 53%)
20M20.00 mi1.36 mi2255-1022164-992164-994236(Top 16%)3907(Top 26%)3907(Top 74%)
21M21.00 mi1.00 mi2173+822082+822082+821221(Top 5%)1163(Top 8%)1163(Top 22%)
35K21.75 mi0.75 mi2133+402044+382044+381366(Top 5%)1296(Top 9%)1296(Top 25%)
23M23.00 mi1.25 mi1990+1431907+1371907+137840(Top 3%)798(Top 5%)798(Top 15%)
24M24.00 mi1.00 mi1904+861823+841823+84807(Top 3%)765(Top 5%)765(Top 14%)
40K24.85 mi0.85 mi1848+561768+551768+55900(Top 3%)853(Top 6%)853(Top 16%)
25.2M25.20 mi0.35 mi1788+601709+591709+59234(Top 0.9%)215(Top 1%)215(Top 4%)
Finish26.22 mi1.02 mi1675+1131599+1101599+110472(Top 2%)449(Top 3%)449(Top 8%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1943

Males

1861

M18-39

1861

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2014

Males

1925

M18-39

1925

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1943

Males

1861

M18-39

1861

15K→20K

9.3 - 12.4 mi

Top 6%
×5stories
+106ft-86ft

Overall

1704

Males

1630

M18-39

1630

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2075

Males

1991

M18-39

1991

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2169

Males

2080

M18-39

2080

25K→30K

15.5 - 18.6 mi

Top 11%
×9stories
+181ft-148ft

Overall

2945

Males

2787

M18-39

2787

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4236

Males

3907

M18-39

3907

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1221

Males

1163

M18-39

1163

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1366

Males

1296

M18-39

1296

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

840

Males

798

M18-39

798

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

807

Males

765

M18-39

765

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

900

Males

853

M18-39

853

40K→25.2M

24.9 - 25.2 mi

Top 0.9%
×1story
+13ft-16ft

Overall

234

Males

215

M18-39

215

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

472

Males

449

M18-39

449

Passing Analysis

Category:
Athletes Passed
1263
Passed By
426
Net Change
+837
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2512
5K → 10K30828+280#2512#2232
10K → 15K14323+120#2232#2112
15K → 20K12611+115#2112#1997
20K → Half116+5#1997#1992
Half → 25K3859-21#1992#2013
25K → 30K29169-140#2013#2153
30K → 20M16118-102#2153#2255
20M → 21M864+82#2255#2173
21M → 35K411+40#2173#2133
35K → 23M1441+143#2133#1990
23M → 24M871+86#1990#1904
24M → 40K615+56#1904#1848
40K → 25.2M600+60#1848#1788
25.2M → Finish1130+113#1788#1675
TOTALS1263426+837
📊

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