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BOSTON MARATHON 2026

Kaizhi Feng

Bib: 21326•F

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 41%
Masters (Masters Women)
#0 / 6862
Top 25%
Age Group (F50-54)
#0 / 1233
Top 19%
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
25:42
3.11 mi
Rank: #18696
Start → 5K
25:42 | 8:17/mi
10K
50:54
6.21 mi
Rank: #18354 (+342)
5K → 10K
25:12 | 8:07/mi
15K
1:15:57
9.32 mi
Rank: #18061 (+293)
10K → 15K
25:03 | 8:04/mi
20K
1:40:55
12.43 mi
Rank: #17655 (+406)
15K → 20K
24:58 | 8:03/mi
HALF
1:46:20
13.11 mi
Rank: #17595 (+60)
20K → HALF
5:25 | 7:57/mi
25K
2:05:45
15.53 mi
Rank: #17235 (+360)
HALF → 25K
19:25 | 8:01/mi
30K
2:31:21
18.64 mi
Rank: #16833 (+402)
25K → 30K
25:36 | 8:15/mi
20M
2:42:23
20.00 mi
Rank: #16601 (+232)
30K → 20M
11:02 | 8:08/mi
21M
2:50:46
21.00 mi
Rank: #16333 (+268)
20M → 21M
8:23 | 8:23/mi
35K
2:56:35
21.75 mi
Rank: #16191 (+142)
21M → 35K
5:49 | 7:47/mi
23M
3:06:13
23.00 mi
Rank: #15834 (+357)
35K → 23M
9:38 | 7:42/mi
24M
3:13:52
24.00 mi
Rank: #15625 (+209)
23M → 24M
7:39 | 7:39/mi
40K
3:20:25
24.85 mi
Rank: #15431 (+194)
24M → 40K
6:33 | 7:40/mi
25.2M
3:23:17
25.20 mi
Rank: #15343 (+88)
40K → 25.2M
2:52 | 8:19/mi
FINISH
3:31:06
26.22 mi
Rank: #15255 (+88)
25.2M → FINISH
7:49 | 7:41/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time1:46:20
Pace8:07 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:44:46
Pace8:00 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:5225:428:1725:42
8:17
-
10K
6.21 mi11:52:0450:548:1225:12
8:07
-0:10
15K
9.32 mi12:17:071:15:578:0925:03
8:04
-0:03
20K
12.43 mi12:42:051:40:558:0824:58
8:03
-0:01
HALF
13.11 mi12:47:301:46:208:075:25
7:57
-0:06
25K
15.53 mi13:06:552:05:458:0619:25
8:01
+0:04
30K
18.64 mi13:32:312:31:218:0825:36
8:15
+0:14
20M
20.00 mi13:43:332:42:238:0811:02
8:08
-0:07
21M
21.00 mi13:51:562:50:468:088:23
8:23
+0:15
35K
21.75 mi13:57:452:56:358:085:49
7:47
-0:36
23M
23.00 mi14:07:233:06:138:069:38
7:42
-0:05
24M
24.00 mi14:15:023:13:528:057:39
7:39
-0:03
40K
24.85 mi14:21:353:20:258:046:33
7:40
+0:01
25.2M
25.20 mi14:24:273:23:178:052:52
8:19
+0:39
FINISH
26.22 mi14:32:163:31:068:047:49
7:41
-0:38

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

7:39 /mi

Average Pace

8:03 /mi

Slowest Pace

8:23 /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

1:02:18

30% of race

Time at Steady Pace

2:28:48

70% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:03 /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 mi11:26:5225:428:1725:42
8:17
#18696
10K
6.21 mi11:52:0450:548:1225:12
8:07
#18354
15K
9.32 mi12:17:071:15:578:0925:03
8:04
#18061
20K
12.43 mi12:42:051:40:558:0824:58
8:03
#17655
HALF
13.11 mi12:47:301:46:208:075:25
7:57
#17595
25K
15.53 mi13:06:552:05:458:0619:25
8:01
#17235
30K
18.64 mi13:32:312:31:218:0825:36
8:15
#16833
20M
20.00 mi13:43:332:42:238:0811:02
8:08
#16601
21M
21.00 mi13:51:562:50:468:088:23
8:23
#16333
35K
21.75 mi13:57:452:56:358:085:49
7:47
#16191
23M
23.00 mi14:07:233:06:138:069:38
7:42
#15834
24M
24.00 mi14:15:023:13:528:057:39
7:39
#15625
40K
24.85 mi14:21:353:20:258:046:33
7:40
#15431
25.2M
25.20 mi14:24:273:23:178:052:52
8:19
#15343
FINISH
26.22 mi14:32:163:31:068:047:49
7:41
#15255
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 mi186966895689517452(Top 60%)6162(Top 49%)6162(Top 500%)
10K6.21 mi3.10 mi18354+3426694+2016694+20118049(Top 62%)6508(Top 52%)6508(Top 528%)
15K9.32 mi3.11 mi18061+2936524+1706524+17017452(Top 60%)6162(Top 49%)6162(Top 500%)
20K12.43 mi3.11 mi17655+4066304+2206304+22016387(Top 56%)5595(Top 44%)5595(Top 454%)
HALF13.11 mi0.68 mi17595+606264+406264+4016736(Top 58%)5743(Top 46%)5743(Top 466%)
25K15.53 mi2.42 mi17235+3606071+1936071+19315472(Top 53%)5121(Top 41%)5121(Top 415%)
30K18.64 mi3.11 mi16833+4025873+1985873+19815201(Top 52%)5080(Top 40%)5080(Top 412%)
20M20.00 mi1.36 mi16601+2325764+1095764+10913721(Top 47%)4362(Top 35%)4362(Top 354%)
21M21.00 mi1.00 mi16333+2685627+1375627+13712417(Top 43%)3752(Top 30%)3752(Top 304%)
35K21.75 mi0.75 mi16191+1425575+525575+5212935(Top 45%)4057(Top 32%)4057(Top 329%)
23M23.00 mi1.25 mi15834+3575383+1925383+19210333(Top 36%)2780(Top 22%)2780(Top 225%)
24M24.00 mi1.00 mi15625+2095272+1115272+11111263(Top 39%)3327(Top 26%)3327(Top 270%)
40K24.85 mi0.85 mi15431+1945192+805192+8010087(Top 35%)2807(Top 22%)2807(Top 228%)
25.2M25.20 mi0.35 mi15343+885143+495143+4910559(Top 36%)3139(Top 25%)3139(Top 255%)
FINISH26.22 mi1.02 mi15255+885101+425101+4212790(Top 44%)4286(Top 34%)4286(Top 348%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21
+97ft-345ft

Overall

17452

Females

6162

F50-54

6162

5K→10K

3.1 - 6.2 mi

Top 62%
×5
+79ft-138ft

Overall

18049

Females

6508

F50-54

6508

10K→15K

6.2 - 9.3 mi

Top 60%
×3
+67ft-78ft

Overall

17452

Females

6162

F50-54

6162

15K→20K

9.3 - 12.4 mi

Top 56%
×5
+106ft-86ft

Overall

16387

Females

5595

F50-54

5595

20K→HALF

12.4 - 13.1 mi

Top 58%
×2
+19ft-37ft

Overall

16736

Females

5743

F50-54

5743

HALF→25K

13.1 - 15.5 mi

Top 53%
×4
+66ft-88ft

Overall

15472

Females

5121

F50-54

5121

25K→30K

15.5 - 18.6 mi

Top 52%
×9
+181ft-148ft

Overall

15201

Females

5080

F50-54

5080

30K→20M

18.6 - 20.0 mi

Top 47%
×5
+64ft-50ft

Overall

13721

Females

4362

F50-54

4362

20M→21M

20.0 - 21.0 mi

Top 43%
×8
+106ft-24ft

Overall

12417

Females

3752

F50-54

3752

21M→35K

21.0 - 21.8 mi

Top 45%
×7
+17ft-86ft

Overall

12935

Females

4057

F50-54

4057

35K→23M

21.8 - 23.0 mi

Top 36%
×5
+23ft-63ft

Overall

10333

Females

2780

F50-54

2780

23M→24M

23.0 - 24.0 mi

Top 39%
×6
+12ft-82ft

Overall

11263

Females

3327

F50-54

3327

24M→40K

24.0 - 24.9 mi

Top 35%
×1
+6ft-20ft

Overall

10087

Females

2807

F50-54

2807

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1
+13ft-16ft

Overall

10559

Females

3139

F50-54

3139

25.2M→FINISH

25.2 - 26.2 mi

Top 44%
×2
+22ft-21ft

Overall

12790

Females

4286

F50-54

4286

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
3790
Passed By
349
Net Change
+3441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18696
5K → 10K486144+342#18696#18354
10K → 15K37481+293#18354#18061
15K → 20K42822+406#18061#17655
20K → HALF7212+60#17655#17595
HALF → 25K3666+360#17595#17235
25K → 30K43028+402#17235#16833
30K → 20M2408+232#16833#16601
20M → 21M2735+268#16601#16333
21M → 35K15311+142#16333#16191
35K → 23M3581+357#16191#15834
23M → 24M2101+209#15834#15625
24M → 40K1951+194#15625#15431
40K → 25.2M891+88#15431#15343
25.2M → FINISH11628+88#15343#15255
TOTALS3790349+3441
📊

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