Boston Marathon logo
BOSTON MARATHON 2023

Zach Legenzoff

Bib: 1319•M

MO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 4%
Gender (Male)
#0 / 15176
Top 6%
Division (M18-39)
#0 / 5285
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:51
Rank: #1768
Start → 5K
19:51 | 6:23/mi
10K· 6.21 mi
39:06
Rank: #1527 (+241)
5K → 10K
19:15 | 6:12/mi
15K· 9.32 mi
58:19
Rank: #1405 (+122)
10K → 15K
19:13 | 6:11/mi
20K· 12.43 mi
1:17:28
Rank: #1249 (+156)
15K → 20K
19:09 | 6:10/mi
Half· 13.11 mi
1:21:35
Rank: #1223 (+26)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:36:28
Rank: #1155 (+68)
Half → 25K
14:53 | 6:08/mi
30K· 18.64 mi
1:55:59
Rank: #1089 (+66)
25K → 30K
19:31 | 6:17/mi
20M
2:04:36
Rank: #1065 (+24)
30K → 20M
8:37 | 6:20/mi
21M
2:11:13
Rank: #1033 (+32)
20M → 21M
6:37 | 6:37/mi
35K· 21.75 mi
2:15:49
Rank: #1025 (+8)
21M → 35K
4:36 | 6:09/mi
23M
2:23:51
Rank: #1014 (+11)
35K → 23M
8:02 | 6:25/mi
24M
2:30:05
Rank: #993 (+21)
23M → 24M
6:14 | 6:14/mi
40K· 24.85 mi
2:35:32
Rank: #985 (+8)
24M → 40K
5:27 | 6:22/mi
25.2M
2:37:52
Rank: #985
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:44:11
Rank: #983 (+2)
25.2M → Finish
6:19 | 6:12/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
Time1:21:35
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:22:36
Pace6:18 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2319:516:2319:51
6:23
-
10K
6.21 mi10:39:3839:066:1819:15
6:12
-0:11
15K
9.32 mi10:58:5158:196:1519:13
6:11
-0:01
20K
12.43 mi11:18:001:17:286:1419:09
6:10
-0:01
Half
13.11 mi11:22:071:21:356:134:07
6:02
-0:08
25K
15.53 mi11:37:001:36:286:1314:53
6:08
+0:06
30K
18.64 mi11:56:311:55:596:1319:31
6:17
+0:09
20M
20.00 mi12:05:082:04:366:148:37
6:20
+0:03
21M
21.00 mi12:11:452:11:136:156:37
6:37
+0:17
35K
21.75 mi12:16:212:15:496:154:36
6:09
-0:28
23M
23.00 mi12:24:232:23:516:158:02
6:25
+0:16
24M
24.00 mi12:30:372:30:056:156:14
6:14
-0:11
40K
24.85 mi12:36:042:35:326:155:27
6:22
+0:08
25.2M
25.20 mi12:38:242:37:526:162:20
6:46
+0:24
Finish
26.22 mi12:44:432:44:116:166:19
6:12
-0:34

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

6:16 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:51

99% of race

Time at Steady Pace

2:20

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:16 /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 mi10:20:2319:516:2319:51
6:23
#1768
10K
6.21 mi10:39:3839:066:1819:15
6:12
#1527
15K
9.32 mi10:58:5158:196:1519:13
6:11
#1405
20K
12.43 mi11:18:001:17:286:1419:09
6:10
#1249
Half
13.11 mi11:22:071:21:356:134:07
6:02
#1223
25K
15.53 mi11:37:001:36:286:1314:53
6:08
#1155
30K
18.64 mi11:56:311:55:596:1319:31
6:17
#1089
20M
20.00 mi12:05:082:04:366:148:37
6:20
#1065
21M
21.00 mi12:11:452:11:136:156:37
6:37
#1033
35K
21.75 mi12:16:212:15:496:154:36
6:09
#1025
23M
23.00 mi12:24:232:23:516:158:02
6:25
#1014
24M
24.00 mi12:30:372:30:056:156:14
6:14
#993
40K
24.85 mi12:36:042:35:326:155:27
6:22
#985
25.2M
25.20 mi12:38:242:37:526:162:20
6:46
#985
Finish
26.22 mi12:44:432:44:116:166:19
6:12
#983
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1768168516851192(Top 4%)1136(Top 7%)1136(Top 21%)
10K6.21 mi3.10 mi1527+2411457+2281457+2281339(Top 5%)1276(Top 8%)1276(Top 24%)
15K9.32 mi3.11 mi1405+1221340+1171340+1171192(Top 4%)1136(Top 7%)1136(Top 21%)
20K12.43 mi3.11 mi1249+1561189+1511189+151952(Top 4%)904(Top 6%)904(Top 17%)
Half13.11 mi0.68 mi1223+261165+241165+24859(Top 3%)817(Top 5%)817(Top 15%)
25K15.53 mi2.42 mi1155+681100+651100+65838(Top 3%)794(Top 5%)794(Top 15%)
30K18.64 mi3.11 mi1089+661038+621038+62869(Top 3%)827(Top 5%)827(Top 16%)
20M20.00 mi1.36 mi1065+241014+241014+24965(Top 4%)922(Top 6%)922(Top 17%)
21M21.00 mi1.00 mi1033+32983+31983+31904(Top 3%)858(Top 6%)858(Top 16%)
35K21.75 mi0.75 mi1025+8975+8975+81066(Top 4%)1014(Top 7%)1014(Top 19%)
23M23.00 mi1.25 mi1014+11964+11964+111138(Top 4%)1074(Top 7%)1074(Top 20%)
24M24.00 mi1.00 mi993+21944+20944+201112(Top 4%)1053(Top 7%)1053(Top 20%)
40K24.85 mi0.85 mi985+8936+8936+81113(Top 4%)1052(Top 7%)1052(Top 20%)
25.2M25.20 mi0.35 mi9859369361041(Top 4%)988(Top 7%)988(Top 19%)
Finish26.22 mi1.02 mi983+2935+1935+11259(Top 5%)1192(Top 8%)1192(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1192

Males

1136

M18-39

1136

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1339

Males

1276

M18-39

1276

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1192

Males

1136

M18-39

1136

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

952

Males

904

M18-39

904

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

859

Males

817

M18-39

817

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

838

Males

794

M18-39

794

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

869

Males

827

M18-39

827

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

965

Males

922

M18-39

922

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

904

Males

858

M18-39

858

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1066

Males

1014

M18-39

1014

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1138

Males

1074

M18-39

1074

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1112

Males

1053

M18-39

1053

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1113

Males

1052

M18-39

1052

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1041

Males

988

M18-39

988

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1259

Males

1192

M18-39

1192

Passing Analysis

Category:
Athletes Passed
891
Passed By
106
Net Change
+785
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1768
5K → 10K25514+241#1768#1527
10K → 15K1319+122#1527#1405
15K → 20K1593+156#1405#1249
20K → Half260+26#1249#1223
Half → 25K724+68#1223#1155
25K → 30K7610+66#1155#1089
30K → 20M317+24#1089#1065
20M → 21M397+32#1065#1033
21M → 35K135+8#1033#1025
35K → 23M209+11#1025#1014
23M → 24M298+21#1014#993
24M → 40K157+8#993#985
40K → 25.2M550#985#985
25.2M → Finish2018+2#985#983
TOTALS891106+785
📊

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