Boston Marathon logo
BOSTON MARATHON 2023

Ziyu Gan

Bib: 2400•M

CA

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
19:25
Rank: #1258
Start → 5K
19:25 | 6:15/mi
10K· 6.21 mi
38:36
Rank: #1232 (+26)
5K → 10K
19:11 | 6:10/mi
15K· 9.32 mi
57:50
Rank: #1205 (+27)
10K → 15K
19:14 | 6:11/mi
20K· 12.43 mi
1:16:58
Rank: #1138 (+67)
15K → 20K
19:08 | 6:10/mi
Half· 13.11 mi
1:21:08
Rank: #1134 (+4)
20K → Half
4:10 | 6:06/mi
25K· 15.53 mi
1:36:13
Rank: #1107 (+27)
Half → 25K
15:05 | 6:13/mi
30K· 18.64 mi
1:56:04
Rank: #1101 (+6)
25K → 30K
19:51 | 6:23/mi
20M
2:04:48
Rank: #1091 (+10)
30K → 20M
8:44 | 6:26/mi
21M
2:11:27
Rank: #1063 (+28)
20M → 21M
6:39 | 6:39/mi
35K· 21.75 mi
2:16:04
Rank: #1055 (+8)
21M → 35K
4:37 | 6:10/mi
23M
2:23:58
Rank: #1026 (+29)
35K → 23M
7:54 | 6:19/mi
24M
2:30:03
Rank: #990 (+36)
23M → 24M
6:05 | 6:05/mi
40K· 24.85 mi
2:35:38
Rank: #998 (-8)
24M → 40K
5:35 | 6:32/mi
25.2M
2:37:58
Rank: #995 (+3)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:44:24
Rank: #1005 (-10)
25.2M → Finish
6:26 | 6:19/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
Time1:21:08
Pace6:11 /mi
2nd Half
Distance13.11 mi
Time1:23:16
Pace6:21 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:0719:256:1519:25
6:15
-
10K
6.21 mi10:39:1838:366:1319:11
6:10
-0:05
15K
9.32 mi10:58:3257:506:1219:14
6:11
+0:01
20K
12.43 mi11:17:401:16:586:1219:08
6:10
-0:01
Half
13.11 mi11:21:501:21:086:114:10
6:06
-0:04
25K
15.53 mi11:36:551:36:136:1215:05
6:13
+0:07
30K
18.64 mi11:56:461:56:046:1419:51
6:23
+0:10
20M
20.00 mi12:05:302:04:486:148:44
6:26
+0:03
21M
21.00 mi12:12:092:11:276:166:39
6:39
+0:13
35K
21.75 mi12:16:462:16:046:154:37
6:10
-0:29
23M
23.00 mi12:24:402:23:586:167:54
6:19
+0:09
24M
24.00 mi12:30:452:30:036:156:05
6:05
-0:14
40K
24.85 mi12:36:202:35:386:165:35
6:32
+0:27
25.2M
25.20 mi12:38:402:37:586:162:20
6:46
+0:14
Finish
26.22 mi12:45:062:44:246:166:26
6:19
-0:27

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

6:05 /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

2:42:04

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 mi10:20:0719:256:1519:25
6:15
#1258
10K
6.21 mi10:39:1838:366:1319:11
6:10
#1232
15K
9.32 mi10:58:3257:506:1219:14
6:11
#1205
20K
12.43 mi11:17:401:16:586:1219:08
6:10
#1138
Half
13.11 mi11:21:501:21:086:114:10
6:06
#1134
25K
15.53 mi11:36:551:36:136:1215:05
6:13
#1107
30K
18.64 mi11:56:461:56:046:1419:51
6:23
#1101
20M
20.00 mi12:05:302:04:486:148:44
6:26
#1091
21M
21.00 mi12:12:092:11:276:166:39
6:39
#1063
35K
21.75 mi12:16:462:16:046:154:37
6:10
#1055
23M
23.00 mi12:24:402:23:586:167:54
6:19
#1026
24M
24.00 mi12:30:452:30:036:156:05
6:05
#990
40K
24.85 mi12:36:202:35:386:165:35
6:32
#998
25.2M
25.20 mi12:38:402:37:586:162:20
6:46
#995
Finish
26.22 mi12:45:062:44:246:166:26
6:19
#1005
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1258119211921208(Top 5%)1151(Top 8%)1151(Top 22%)
10K6.21 mi3.10 mi1232+261167+251167+251245(Top 5%)1182(Top 8%)1182(Top 22%)
15K9.32 mi3.11 mi1205+271143+241143+241208(Top 5%)1151(Top 8%)1151(Top 22%)
20K12.43 mi3.11 mi1138+671082+611082+61930(Top 3%)883(Top 6%)883(Top 17%)
Half13.11 mi0.68 mi1134+41079+31079+31036(Top 4%)988(Top 7%)988(Top 19%)
25K15.53 mi2.42 mi1107+271052+271052+271046(Top 4%)996(Top 7%)996(Top 19%)
30K18.64 mi3.11 mi1101+61049+31049+31173(Top 4%)1118(Top 7%)1118(Top 21%)
20M20.00 mi1.36 mi1091+101039+101039+101201(Top 5%)1143(Top 8%)1143(Top 22%)
21M21.00 mi1.00 mi1063+281012+271012+27972(Top 4%)924(Top 6%)924(Top 17%)
35K21.75 mi0.75 mi1055+81004+81004+81139(Top 4%)1083(Top 7%)1083(Top 20%)
23M23.00 mi1.25 mi1026+29975+29975+29860(Top 3%)816(Top 5%)816(Top 15%)
24M24.00 mi1.00 mi990+36941+34941+34729(Top 3%)691(Top 5%)691(Top 13%)
40K24.85 mi0.85 mi998-8949-8949-81625(Top 6%)1528(Top 10%)1528(Top 29%)
25.2M25.20 mi0.35 mi995+3946+3946+31042(Top 4%)989(Top 7%)989(Top 19%)
Finish26.22 mi1.02 mi1005-10956-10956-101660(Top 6%)1560(Top 10%)1560(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1208

Males

1151

M18-39

1151

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1245

Males

1182

M18-39

1182

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1208

Males

1151

M18-39

1151

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

930

Males

883

M18-39

883

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1036

Males

988

M18-39

988

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1046

Males

996

M18-39

996

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1173

Males

1118

M18-39

1118

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1201

Males

1143

M18-39

1143

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

972

Males

924

M18-39

924

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1139

Males

1083

M18-39

1083

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

860

Males

816

M18-39

816

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

729

Males

691

M18-39

691

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1625

Males

1528

M18-39

1528

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1042

Males

989

M18-39

989

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1660

Males

1560

M18-39

1560

Passing Analysis

Category:
Athletes Passed
461
Passed By
208
Net Change
+253
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1258
5K → 10K8054+26#1258#1232
10K → 15K5124+27#1232#1205
15K → 20K703+67#1205#1138
20K → Half95+4#1138#1134
Half → 25K4114+27#1134#1107
25K → 30K3832+6#1107#1101
30K → 20M2313+10#1101#1091
20M → 21M357+28#1091#1063
21M → 35K157+8#1063#1055
35K → 23M323+29#1055#1026
23M → 24M371+36#1026#990
24M → 40K1018-8#990#998
40K → 25.2M74+3#998#995
25.2M → Finish1323-10#995#1005
TOTALS461208+253
📊

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