Boston Marathon logo
BOSTON MARATHON 2024

Haichuan Liu

Bib: 1277•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Top 5%
Gender (Male)
#0 / 14578
Top 8%
Masters (Masters Men)
#0 / 9729
Top 2%
Division (M45-49)
#0 / 2218
Top 3%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:45
Rank: #1027
Start → 5K
18:45 | 6:02/mi
10K· 6.21 mi
37:57
Rank: #1216 (-189)
5K → 10K
19:12 | 6:11/mi
15K· 9.32 mi
57:24
Rank: #1321 (-105)
10K → 15K
19:27 | 6:16/mi
20K· 12.43 mi
1:16:58
Rank: #1303 (+18)
15K → 20K
19:34 | 6:18/mi
Half· 13.11 mi
1:21:13
Rank: #1307 (-4)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:36:42
Rank: #1286 (+21)
Half → 25K
15:29 | 6:23/mi
30K· 18.64 mi
1:57:13
Rank: #1250 (+36)
25K → 30K
20:31 | 6:36/mi
20M
2:06:21
Rank: #1224 (+26)
30K → 20M
9:08 | 6:43/mi
21M
2:13:32
Rank: #1205 (+19)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:18:26
Rank: #1193 (+12)
21M → 35K
4:54 | 6:33/mi
23M
2:27:03
Rank: #1173 (+20)
35K → 23M
8:37 | 6:53/mi
24M
2:33:49
Rank: #1169 (+4)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:39:52
Rank: #1185 (-16)
24M → 40K
6:03 | 7:05/mi
25.2M
2:42:36
Rank: #1204 (-19)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
2:49:41
Rank: #1241 (-37)
25.2M → Finish
7:05 | 6:57/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
Time1:21:13
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:28:28
Pace6:45 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2418:456:0218:45
6:02
-
10K
6.21 mi10:38:3637:576:0619:12
6:11
+0:09
15K
9.32 mi10:58:0357:246:1019:27
6:16
+0:05
20K
12.43 mi11:17:371:16:586:1219:34
6:18
+0:02
Half
13.11 mi11:21:521:21:136:124:15
6:14
-0:04
25K
15.53 mi11:37:211:36:426:1315:29
6:23
+0:09
30K
18.64 mi11:57:521:57:136:1720:31
6:36
+0:13
20M
20.00 mi12:07:002:06:216:199:08
6:43
+0:07
21M
21.00 mi12:14:112:13:326:227:11
7:11
+0:28
35K
21.75 mi12:19:052:18:266:224:54
6:33
-0:38
23M
23.00 mi12:27:422:27:036:248:37
6:53
+0:20
24M
24.00 mi12:34:282:33:496:256:46
6:46
-0:07
40K
24.85 mi12:40:312:39:526:266:03
7:05
+0:19
25.2M
25.20 mi12:43:152:42:366:272:44
7:56
+0:51
Finish
26.22 mi12:50:202:49:416:297:05
6:57
-0:59

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

6:29 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:13

48% of race

Time at Steady Pace

56:48

33% of race

Time at Slower Pace

31:40

19% 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 mi10:19:2418:456:0218:45
6:02
#1027
10K
6.21 mi10:38:3637:576:0619:12
6:11
#1216
15K
9.32 mi10:58:0357:246:1019:27
6:16
#1321
20K
12.43 mi11:17:371:16:586:1219:34
6:18
#1303
Half
13.11 mi11:21:521:21:136:124:15
6:14
#1307
25K
15.53 mi11:37:211:36:426:1315:29
6:23
#1286
30K
18.64 mi11:57:521:57:136:1720:31
6:36
#1250
20M
20.00 mi12:07:002:06:216:199:08
6:43
#1224
21M
21.00 mi12:14:112:13:326:227:11
7:11
#1205
35K
21.75 mi12:19:052:18:266:224:54
6:33
#1193
23M
23.00 mi12:27:422:27:036:248:37
6:53
#1173
24M
24.00 mi12:34:282:33:496:256:46
6:46
#1169
40K
24.85 mi12:40:312:39:526:266:03
7:05
#1185
25.2M
25.20 mi12:43:152:42:366:272:44
7:56
#1204
Finish
26.22 mi12:50:202:49:416:297:05
6:57
#1241
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10279909901587(Top 6%)1535(Top 11%)1535(Top 69%)
10K6.21 mi3.10 mi1216-1891176-1861176-1861429(Top 6%)1384(Top 9%)1384(Top 62%)
15K9.32 mi3.11 mi1321-1051281-1051281-1051587(Top 6%)1535(Top 11%)1535(Top 69%)
20K12.43 mi3.11 mi1303+181262+191262+191351(Top 5%)1307(Top 9%)1307(Top 59%)
Half13.11 mi0.68 mi1307-41265-31265-31403(Top 5%)1358(Top 9%)1358(Top 61%)
25K15.53 mi2.42 mi1286+211242+231242+231390(Top 5%)1341(Top 9%)1341(Top 60%)
30K18.64 mi3.11 mi1250+361205+371205+371331(Top 5%)1272(Top 9%)1272(Top 57%)
20M20.00 mi1.36 mi1224+261181+241181+241368(Top 5%)1300(Top 9%)1300(Top 59%)
21M21.00 mi1.00 mi1205+191161+201161+201500(Top 6%)1413(Top 10%)1413(Top 64%)
35K21.75 mi0.75 mi1193+121149+121149+121380(Top 5%)1299(Top 9%)1299(Top 59%)
23M23.00 mi1.25 mi1173+201126+231126+231531(Top 6%)1430(Top 10%)1430(Top 64%)
24M24.00 mi1.00 mi1169+41122+41122+41564(Top 6%)1440(Top 10%)1440(Top 65%)
40K24.85 mi0.85 mi1185-161137-151137-152063(Top 8%)1835(Top 13%)1835(Top 83%)
25.2M25.20 mi0.35 mi1204-191155-181155-182478(Top 10%)2133(Top 15%)2133(Top 96%)
Finish26.22 mi1.02 mi1241-371187-321187-322914(Top 11%)2452(Top 17%)2452(Top 111%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1587

Males

1535

M45-49

1535

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1429

Males

1384

M45-49

1384

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1587

Males

1535

M45-49

1535

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1351

Males

1307

M45-49

1307

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1403

Males

1358

M45-49

1358

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1390

Males

1341

M45-49

1341

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1331

Males

1272

M45-49

1272

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1368

Males

1300

M45-49

1300

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1500

Males

1413

M45-49

1413

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1380

Males

1299

M45-49

1299

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1531

Males

1430

M45-49

1430

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1564

Males

1440

M45-49

1440

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2063

Males

1835

M45-49

1835

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2478

Males

2133

M45-49

2133

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2914

Males

2452

M45-49

2452

Passing Analysis

Category:
Athletes Passed
490
Passed By
704
Net Change
-214
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1027
5K → 10K13202-189#1027#1216
10K → 15K36141-105#1216#1321
15K → 20K6345+18#1321#1303
20K → Half812-4#1303#1307
Half → 25K5837+21#1307#1286
25K → 30K8751+36#1286#1250
30K → 20M5933+26#1250#1224
20M → 21M3516+19#1224#1205
21M → 35K2513+12#1205#1193
35K → 23M4525+20#1193#1173
23M → 24M1915+4#1173#1169
24M → 40K1834-16#1169#1185
40K → 25.2M928-19#1185#1204
25.2M → Finish1552-37#1204#1241
TOTALS490704-214
📊

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