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BOSTON MARATHON 2023

Zitao Liu

Bib: 11631•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 44%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 49%
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
22:42
Rank: #8156
Start → 5K
22:42 | 7:18/mi
10K· 6.21 mi
45:39
Rank: #8791 (-635)
5K → 10K
22:57 | 7:23/mi
15K· 9.32 mi
1:09:20
Rank: #9523 (-732)
10K → 15K
23:41 | 7:37/mi
20K· 12.43 mi
1:33:35
Rank: #10098 (-575)
15K → 20K
24:15 | 7:48/mi
Half· 13.11 mi
1:38:42
Rank: #10100 (-2)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:57:54
Rank: #10410 (-310)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:24:14
Rank: #11071 (-661)
25K → 30K
26:20 | 8:29/mi
20M
2:35:53
Rank: #11315 (-244)
30K → 20M
11:39 | 8:34/mi
21M
2:45:08
Rank: #11550 (-235)
20M → 21M
9:15 | 9:15/mi
35K· 21.75 mi
2:51:09
Rank: #11589 (-39)
21M → 35K
6:01 | 8:03/mi
23M
3:01:46
Rank: #11668 (-79)
35K → 23M
10:37 | 8:29/mi
24M
3:10:10
Rank: #11773 (-105)
23M → 24M
8:24 | 8:24/mi
40K· 24.85 mi
3:17:30
Rank: #11857 (-84)
24M → 40K
7:20 | 8:35/mi
25.2M
3:20:39
Rank: #11879 (-22)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:28:34
Rank: #11810 (+69)
25.2M → Finish
7:55 | 7:46/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:42
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:49:52
Pace8:23 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2522:427:1822:42
7:18
-
10K
6.21 mi11:12:2245:397:2122:57
7:23
+0:05
15K
9.32 mi11:36:031:09:207:2623:41
7:37
+0:14
20K
12.43 mi12:00:181:33:357:3224:15
7:48
+0:11
Half
13.11 mi12:05:251:38:427:325:07
7:30
-0:18
25K
15.53 mi12:24:371:57:547:3519:12
7:55
+0:25
30K
18.64 mi12:50:572:24:147:4426:20
8:29
+0:34
20M
20.00 mi13:02:362:35:537:4811:39
8:34
+0:05
21M
21.00 mi13:11:512:45:087:529:15
9:15
+0:41
35K
21.75 mi13:17:522:51:097:526:01
8:03
-1:12
23M
23.00 mi13:28:293:01:467:5410:37
8:29
+0:26
24M
24.00 mi13:36:533:10:107:558:24
8:24
-0:05
40K
24.85 mi13:44:133:17:307:577:20
8:35
+0:11
25.2M
25.20 mi13:47:223:20:397:583:09
9:08
+0:33
Finish
26.22 mi13:55:173:28:347:587:55
7:46
-1:22

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

7:18 /mi

Average Pace

7:58 /mi

Slowest Pace

9:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:14:27

36% of race

Time at Steady Pace

57:23

28% of race

Time at Slower Pace

1:16:44

37% of race

Average Pace: 7:57 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:49:2522:427:1822:42
7:18
#8156
10K
6.21 mi11:12:2245:397:2122:57
7:23
#8791
15K
9.32 mi11:36:031:09:207:2623:41
7:37
#9523
20K
12.43 mi12:00:181:33:357:3224:15
7:48
#10098
Half
13.11 mi12:05:251:38:427:325:07
7:30
#10100
25K
15.53 mi12:24:371:57:547:3519:12
7:55
#10410
30K
18.64 mi12:50:572:24:147:4426:20
8:29
#11071
20M
20.00 mi13:02:362:35:537:4811:39
8:34
#11315
21M
21.00 mi13:11:512:45:087:529:15
9:15
#11550
35K
21.75 mi13:17:522:51:097:526:01
8:03
#11589
23M
23.00 mi13:28:293:01:467:5410:37
8:29
#11668
24M
24.00 mi13:36:533:10:107:558:24
8:24
#11773
40K
24.85 mi13:44:133:17:307:577:20
8:35
#11857
25.2M
25.20 mi13:47:223:20:397:583:09
9:08
#11879
Finish
26.22 mi13:55:173:28:347:587:55
7:46
#11810
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi81567076707611222(Top 42%)8730(Top 58%)8730(Top 425%)
10K6.21 mi3.10 mi8791-6357455-3797455-3799521(Top 36%)7871(Top 52%)7871(Top 384%)
15K9.32 mi3.11 mi9523-7327882-4277882-42711222(Top 42%)8730(Top 58%)8730(Top 425%)
20K12.43 mi3.11 mi10098-5758205-3238205-32311814(Top 44%)8935(Top 59%)8935(Top 435%)
Half13.11 mi0.68 mi10100-28204+18204+110341(Top 39%)8253(Top 54%)8253(Top 402%)
25K15.53 mi2.42 mi10410-3108344-1408344-14012081(Top 45%)8934(Top 59%)8934(Top 435%)
30K18.64 mi3.11 mi11071-6618610-2668610-26614175(Top 53%)9717(Top 64%)9717(Top 474%)
20M20.00 mi1.36 mi11315-2448694-848694-8414124(Top 53%)9611(Top 63%)9611(Top 468%)
21M21.00 mi1.00 mi11550-2358774-808774-8014764(Top 55%)9825(Top 65%)9825(Top 479%)
35K21.75 mi0.75 mi11589-398774877412516(Top 47%)8770(Top 58%)8770(Top 427%)
23M23.00 mi1.25 mi11668-798792-188792-1813129(Top 49%)8963(Top 59%)8963(Top 437%)
24M24.00 mi1.00 mi11773-1058819-278819-2713931(Top 52%)9269(Top 61%)9269(Top 452%)
40K24.85 mi0.85 mi11857-848829-108829-1013876(Top 52%)9172(Top 60%)9172(Top 447%)
25.2M25.20 mi0.35 mi11879-228826+38826+313413(Top 50%)8914(Top 59%)8914(Top 434%)
Finish26.22 mi1.02 mi11810+698776+508776+5010511(Top 39%)7535(Top 50%)7535(Top 367%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11222

Males

8730

M50-54

8730

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9521

Males

7871

M50-54

7871

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11222

Males

8730

M50-54

8730

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11814

Males

8935

M50-54

8935

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10341

Males

8253

M50-54

8253

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12081

Males

8934

M50-54

8934

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14175

Males

9717

M50-54

9717

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14124

Males

9611

M50-54

9611

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

14764

Males

9825

M50-54

9825

21M→35K

21.0 - 21.8 mi

Top 47%
×7stories
+17ft-86ft

Overall

12516

Males

8770

M50-54

8770

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

13129

Males

8963

M50-54

8963

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

13931

Males

9269

M50-54

9269

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13876

Males

9172

M50-54

9172

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13413

Males

8914

M50-54

8914

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10511

Males

7535

M50-54

7535

Passing Analysis

Category:
Athletes Passed
669*
Passed By
4322
Net Change
-3654
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8156
5K → 10K60695-635#8156#8791
10K → 15K29761-732#8791#9523
15K → 20K43617-575#9523#10098
20K → Half37*39-2#10098#10100
Half → 25K55365-310#10100#10410
25K → 30K49710-661#10410#11071
30K → 20M38282-244#11071#11315
20M → 21M32267-235#11315#11550
21M → 35K4180-39#11550#11589
35K → 23M73152-79#11589#11668
23M → 24M41146-105#11668#11773
24M → 40K41125-84#11773#11857
40K → 25.2M2143-22#11857#11879
25.2M → Finish10940+69#11879#11810
TOTALS669*4322-3654

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing