Boston Marathon logo
BOSTON MARATHON 2023

Timothy Liu

Bib: 5697•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:15
Rank: #23568
Start → 5K
31:15 | 10:04/mi
10K· 6.21 mi
1:02:34
Rank: #23780 (-212)
5K → 10K
31:19 | 10:05/mi
15K· 9.32 mi
1:33:33
Rank: #23688 (+92)
10K → 15K
30:59 | 9:58/mi
20K· 12.43 mi
2:12:28
Rank: #24689 (-1001)
15K → 20K
38:55 | 12:32/mi
Half· 13.11 mi
2:22:07
Rank: #24965 (-276)
20K → Half
9:39 | 14:09/mi
25K· 15.53 mi
2:59:08
Rank: #25626 (-661)
Half → 25K
37:01 | 15:16/mi
30K· 18.64 mi
3:44:49
Rank: #25836 (-210)
25K → 30K
45:41 | 14:42/mi
20M
4:04:34
Rank: #25876 (-40)
30K → 20M
19:45 | 14:32/mi
21M
4:19:13
Rank: #25868 (+8)
20M → 21M
14:39 | 14:39/mi
35K· 21.75 mi
4:29:20
Rank: #25874 (-6)
21M → 35K
10:07 | 13:31/mi
23M
4:46:58
Rank: #25886 (-12)
35K → 23M
17:38 | 14:05/mi
24M
5:01:02
Rank: #25907 (-21)
23M → 24M
14:04 | 14:04/mi
40K· 24.85 mi
5:12:50
Rank: #25906 (+1)
24M → 40K
11:48 | 13:48/mi
25.2M
5:17:46
Rank: #25898 (+8)
40K → 25.2M
4:56 | 14:18/mi
Finish· 26.22 mi
5:29:34
Rank: #25877 (+21)
25.2M → Finish
11:48 | 11:35/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
Time2:22:07
Pace10:50 /mi
2nd Half
Distance13.11 mi
Time3:07:27
Pace14:18 /mi
📊Positive Split: 31.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:3031:1510:0431:15
10:04
-
10K
6.21 mi11:59:491:02:3410:0431:19
10:05
+0:01
15K
9.32 mi12:30:481:33:3310:0230:59
9:58
-0:07
20K
12.43 mi13:09:432:12:2810:4038:55
12:32
+2:34
Half
13.11 mi13:19:222:22:0710:509:39
14:09
+1:37
25K
15.53 mi13:56:232:59:0811:3237:01
15:16
+1:07
30K
18.64 mi14:42:043:44:4912:0445:41
14:42
-0:34
20M
20.00 mi15:01:494:04:3412:1419:45
14:32
-0:10
21M
21.00 mi15:16:284:19:1312:2114:39
14:39
+0:07
35K
21.75 mi15:26:354:29:2012:2310:07
13:31
-1:08
23M
23.00 mi15:44:134:46:5812:2917:38
14:05
+0:34
24M
24.00 mi15:58:175:01:0212:3314:04
14:04
-0:01
40K
24.85 mi16:10:055:12:5012:3511:48
13:48
-0:16
25.2M
25.20 mi16:15:015:17:4612:374:56
14:18
+0:30
Finish
26.22 mi16:26:495:29:3412:3511:48
11:35
-2:43

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

9:58 /mi

Average Pace

12:35 /mi

Slowest Pace

15:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:16

44% of race

Time at Steady Pace

2:28:17

45% of race

Time at Slower Pace

37:01

11% of race

Average Pace: 12:34 /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 mi11:28:3031:1510:0431:15
10:04
#23568
10K
6.21 mi11:59:491:02:3410:0431:19
10:05
#23780
15K
9.32 mi12:30:481:33:3310:0230:59
9:58
#23688
20K
12.43 mi13:09:432:12:2810:4038:55
12:32
#24689
Half
13.11 mi13:19:222:22:0710:509:39
14:09
#24965
25K
15.53 mi13:56:232:59:0811:3237:01
15:16
#25626
30K
18.64 mi14:42:043:44:4912:0445:41
14:42
#25836
20M
20.00 mi15:01:494:04:3412:1419:45
14:32
#25876
21M
21.00 mi15:16:284:19:1312:2114:39
14:39
#25868
35K
21.75 mi15:26:354:29:2012:2310:07
13:31
#25874
23M
23.00 mi15:44:134:46:5812:2917:38
14:05
#25886
24M
24.00 mi15:58:175:01:0212:3314:04
14:04
#25907
40K
24.85 mi16:10:055:12:5012:3511:48
13:48
#25906
25.2M
25.20 mi16:15:015:17:4612:374:56
14:18
#25898
Finish
26.22 mi16:26:495:29:3412:3511:48
11:35
#25877
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23568138641386423454(Top 88%)13850(Top 91%)13850(Top 262%)
10K6.21 mi3.10 mi23780-21213984-12013984-12023862(Top 90%)14028(Top 92%)14028(Top 265%)
15K9.32 mi3.11 mi23688+9213948+3613948+3623454(Top 88%)13850(Top 91%)13850(Top 262%)
20K12.43 mi3.11 mi24689-100114383-43514383-43525983(Top 98%)14915(Top 98%)14915(Top 282%)
Half13.11 mi0.68 mi24965-27614505-12214505-12226550(Top 100%)15142(Top 100%)15142(Top 287%)
25K15.53 mi2.42 mi25626-66114774-26914774-26926571(Top 100%)15151(Top 100%)15151(Top 287%)
30K18.64 mi3.11 mi25836-21014858-8414858-8426329(Top 99%)15036(Top 99%)15036(Top 285%)
20M20.00 mi1.36 mi25876-4014869-1114869-1126117(Top 98%)14909(Top 98%)14909(Top 282%)
21M21.00 mi1.00 mi25868+814863+614863+625520(Top 96%)14632(Top 96%)14632(Top 277%)
35K21.75 mi0.75 mi25874-6148631486325910(Top 97%)14793(Top 97%)14793(Top 280%)
23M23.00 mi1.25 mi25886-12148631486325881(Top 97%)14771(Top 97%)14771(Top 279%)
24M24.00 mi1.00 mi25907-2114869-614869-626101(Top 98%)14868(Top 98%)14868(Top 281%)
40K24.85 mi0.85 mi25906+1148691486925567(Top 96%)14587(Top 96%)14587(Top 276%)
25.2M25.20 mi0.35 mi25898+814866+314866+325238(Top 95%)14414(Top 95%)14414(Top 273%)
Finish26.22 mi1.02 mi25877+2114853+1314853+1324784(Top 93%)14215(Top 94%)14215(Top 269%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23454

Males

13850

M18-39

13850

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

23862

Males

14028

M18-39

14028

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23454

Males

13850

M18-39

13850

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

25983

Males

14915

M18-39

14915

20K→Half

12.4 - 13.1 mi

Top 100%
×2stories
+19ft-37ft

Overall

26550

Males

15142

M18-39

15142

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

26571

Males

15151

M18-39

15151

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

26329

Males

15036

M18-39

15036

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

26117

Males

14909

M18-39

14909

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

25520

Males

14632

M18-39

14632

21M→35K

21.0 - 21.8 mi

Top 97%
×7stories
+17ft-86ft

Overall

25910

Males

14793

M18-39

14793

35K→23M

21.8 - 23.0 mi

Top 97%
×5stories
+23ft-63ft

Overall

25881

Males

14771

M18-39

14771

23M→24M

23.0 - 24.0 mi

Top 98%
×6stories
+12ft-82ft

Overall

26101

Males

14868

M18-39

14868

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25567

Males

14587

M18-39

14587

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25238

Males

14414

M18-39

14414

25.2M→Finish

25.2 - 26.2 mi

Top 93%
×2stories
+22ft-21ft

Overall

24784

Males

14215

M18-39

14215

Passing Analysis

Category:
Athletes Passed
410
Passed By
2719
Net Change
-2309
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23568
5K → 10K116328-212#23568#23780
10K → 15K16371+92#23780#23688
15K → 20K51006-1001#23688#24689
20K → Half0276-276#24689#24965
Half → 25K2663-661#24965#25626
25K → 30K13223-210#25626#25836
30K → 20M1151-40#25836#25876
20M → 21M2315+8#25876#25868
21M → 35K915-6#25868#25874
35K → 23M1426-12#25874#25886
23M → 24M627-21#25886#25907
24M → 40K1413+1#25907#25906
40K → 25.2M124+8#25906#25898
25.2M → Finish221+21#25898#25877
TOTALS4102719-2309
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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