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BOSTON MARATHON 2026

Dieyi Situ

Bib: 22789•F

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0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
27:17
3.11 mi
Rank: #21613
Start → 5K
27:17 | 8:47/mi
10K
54:20
6.21 mi
Rank: #21560 (+53)
5K → 10K
27:03 | 8:43/mi
15K
1:21:23
9.32 mi
Rank: #21432 (+128)
10K → 15K
27:03 | 8:43/mi
20K
1:48:51
12.43 mi
Rank: #21348 (+84)
15K → 20K
27:28 | 8:51/mi
HALF
1:54:36
13.11 mi
Rank: #21268 (+80)
20K → HALF
5:45 | 8:27/mi
25K
2:16:24
15.53 mi
Rank: #21234 (+34)
HALF → 25K
21:48 | 9:00/mi
30K
2:45:10
18.64 mi
Rank: #21112 (+122)
25K → 30K
28:46 | 9:16/mi
20M
2:57:47
20.00 mi
Rank: #21035 (+77)
30K → 20M
12:37 | 9:18/mi
21M
3:07:50
21.00 mi
Rank: #21021 (+14)
20M → 21M
10:03 | 10:03/mi
35K
3:14:29
21.75 mi
Rank: #20960 (+61)
21M → 35K
6:39 | 8:54/mi
23M
3:26:16
23.00 mi
Rank: #20938 (+22)
35K → 23M
11:47 | 9:25/mi
24M
3:35:28
24.00 mi
Rank: #20917 (+21)
23M → 24M
9:12 | 9:12/mi
40K
3:43:25
24.85 mi
Rank: #20864 (+53)
24M → 40K
7:57 | 9:18/mi
25.2M
3:47:08
25.20 mi
Rank: #20898 (-34)
40K → 25.2M
3:43 | 10:47/mi
FINISH
3:56:37
26.22 mi
Rank: #20963 (-65)
25.2M → FINISH
9:29 | 9:19/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:54:36
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time2:02:01
Pace9:19 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:31:5927:178:4727:17
8:47
-
10K
6.21 mi11:59:0254:208:4527:03
8:43
-0:04
15K
9.32 mi12:26:051:21:238:4427:03
8:43
0:00
20K
12.43 mi12:53:331:48:518:4627:28
8:51
+0:08
HALF
13.11 mi12:59:181:54:368:455:45
8:27
-0:24
25K
15.53 mi13:21:062:16:248:4721:48
9:00
+0:33
30K
18.64 mi13:49:522:45:108:5228:46
9:16
+0:16
20M
20.00 mi14:02:292:57:478:5412:37
9:18
+0:02
21M
21.00 mi14:12:323:07:508:5710:03
10:03
+0:45
35K
21.75 mi14:19:113:14:298:576:39
8:54
-1:09
23M
23.00 mi14:30:583:26:168:5911:47
9:25
+0:31
24M
24.00 mi14:40:103:35:288:599:12
9:12
-0:13
40K
24.85 mi14:48:073:43:259:007:57
9:18
+0:06
25.2M
25.20 mi14:51:503:47:089:013:43
10:47
+1:29
FINISH
26.22 mi15:01:193:56:379:029:29
9:19
-1:28

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:27 /mi

Average Pace

9:02 /mi

Slowest Pace

10:47 /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

2:01:15

51% of race

Time at Steady Pace

1:41:36

43% of race

Time at Slower Pace

13:46

6% of race

Average Pace: 9:01 /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 mi11:31:5927:178:4727:17
8:47
#21613
10K
6.21 mi11:59:0254:208:4527:03
8:43
#21560
15K
9.32 mi12:26:051:21:238:4427:03
8:43
#21432
20K
12.43 mi12:53:331:48:518:4627:28
8:51
#21348
HALF
13.11 mi12:59:181:54:368:455:45
8:27
#21268
25K
15.53 mi13:21:062:16:248:4721:48
9:00
#21234
30K
18.64 mi13:49:522:45:108:5228:46
9:16
#21112
20M
20.00 mi14:02:292:57:478:5412:37
9:18
#21035
21M
21.00 mi14:12:323:07:508:5710:03
10:03
#21021
35K
21.75 mi14:19:113:14:298:576:39
8:54
#20960
23M
23.00 mi14:30:583:26:168:5911:47
9:25
#20938
24M
24.00 mi14:40:103:35:288:599:12
9:12
#20917
40K
24.85 mi14:48:073:43:259:007:57
9:18
#20864
25.2M
25.20 mi14:51:503:47:089:013:43
10:47
#20898
FINISH
26.22 mi15:01:193:56:379:029:29
9:19
#20963
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi216138493849321242(Top 73%)8256(Top 66%)8256(Top 670%)
10K6.21 mi3.10 mi21560+538446+478446+4721461(Top 74%)8377(Top 67%)8377(Top 679%)
15K9.32 mi3.11 mi21432+1288374+728374+7221242(Top 73%)8256(Top 66%)8256(Top 670%)
20K12.43 mi3.11 mi21348+848342+328342+3221190(Top 73%)8244(Top 66%)8244(Top 669%)
HALF13.11 mi0.68 mi21268+808300+428300+4219938(Top 69%)7565(Top 60%)7565(Top 614%)
25K15.53 mi2.42 mi21234+348284+168284+1621132(Top 73%)8230(Top 65%)8230(Top 667%)
30K18.64 mi3.11 mi21112+1228233+518233+5120776(Top 72%)8143(Top 65%)8143(Top 660%)
20M20.00 mi1.36 mi21035+778214+198214+1920264(Top 70%)7954(Top 63%)7954(Top 645%)
21M21.00 mi1.00 mi21021+148212+28212+220601(Top 71%)8165(Top 65%)8165(Top 662%)
35K21.75 mi0.75 mi20960+618188+248188+2419603(Top 68%)7761(Top 62%)7761(Top 629%)
23M23.00 mi1.25 mi20938+228181+78181+720326(Top 70%)8130(Top 65%)8130(Top 659%)
24M24.00 mi1.00 mi20917+218179+28179+220280(Top 70%)8196(Top 65%)8196(Top 665%)
40K24.85 mi0.85 mi20864+538168+118168+1119689(Top 68%)7925(Top 63%)7925(Top 643%)
25.2M25.20 mi0.35 mi20898-348187-198187-1921844(Top 75%)8992(Top 71%)8992(Top 729%)
FINISH26.22 mi1.02 mi20963-658237-508237-5021688(Top 75%)8902(Top 71%)8902(Top 722%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21
+97ft-345ft

Overall

21242

Females

8256

F50-54

8256

5K→10K

3.1 - 6.2 mi

Top 74%
×5
+79ft-138ft

Overall

21461

Females

8377

F50-54

8377

10K→15K

6.2 - 9.3 mi

Top 73%
×3
+67ft-78ft

Overall

21242

Females

8256

F50-54

8256

15K→20K

9.3 - 12.4 mi

Top 73%
×5
+106ft-86ft

Overall

21190

Females

8244

F50-54

8244

20K→HALF

12.4 - 13.1 mi

Top 69%
×2
+19ft-37ft

Overall

19938

Females

7565

F50-54

7565

HALF→25K

13.1 - 15.5 mi

Top 73%
×4
+66ft-88ft

Overall

21132

Females

8230

F50-54

8230

25K→30K

15.5 - 18.6 mi

Top 72%
×9
+181ft-148ft

Overall

20776

Females

8143

F50-54

8143

30K→20M

18.6 - 20.0 mi

Top 70%
×5
+64ft-50ft

Overall

20264

Females

7954

F50-54

7954

20M→21M

20.0 - 21.0 mi

Top 71%
×8
+106ft-24ft

Overall

20601

Females

8165

F50-54

8165

21M→35K

21.0 - 21.8 mi

Top 68%
×7
+17ft-86ft

Overall

19603

Females

7761

F50-54

7761

35K→23M

21.8 - 23.0 mi

Top 70%
×5
+23ft-63ft

Overall

20326

Females

8130

F50-54

8130

23M→24M

23.0 - 24.0 mi

Top 70%
×6
+12ft-82ft

Overall

20280

Females

8196

F50-54

8196

24M→40K

24.0 - 24.9 mi

Top 68%
×1
+6ft-20ft

Overall

19689

Females

7925

F50-54

7925

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1
+13ft-16ft

Overall

21844

Females

8992

F50-54

8992

25.2M→FINISH

25.2 - 26.2 mi

Top 75%
×2
+22ft-21ft

Overall

21688

Females

8902

F50-54

8902

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1756
Passed By
1106
Net Change
+650
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21613
5K → 10K320267+53#21613#21560
10K → 15K233105+128#21560#21432
15K → 20K201117+84#21432#21348
20K → HALF855+80#21348#21268
HALF → 25K13096+34#21268#21234
25K → 30K228106+122#21234#21112
30K → 20M11033+77#21112#21035
20M → 21M7460+14#21035#21021
21M → 35K7918+61#21021#20960
35K → 23M9876+22#20960#20938
23M → 24M6140+21#20938#20917
24M → 40K8431+53#20917#20864
40K → 25.2M2054-34#20864#20898
25.2M → FINISH3398-65#20898#20963
TOTALS17561106+650
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing