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BOSTON MARATHON 2024

Kellie Zajac

Bib: 20004•F

OH

Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Age Group (F45-49)
#0 / 1753
Race Day Weather
55°/45°F
scattered 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· 3.11 mi
25:59
Rank: #17040
Start → 5K
25:59 | 8:22/mi
10K· 6.21 mi
56:44
Rank: #20382 (-3342)
5K → 10K
30:45 | 9:54/mi
15K· 9.32 mi
1:25:10
Rank: #20102 (+280)
10K → 15K
28:26 | 9:09/mi
20K· 12.43 mi
1:59:02
Rank: #20895 (-793)
15K → 20K
33:52 | 10:54/mi
Half· 13.11 mi
2:05:25
Rank: #20826 (+69)
20K → Half
6:23 | 9:21/mi
25K· 15.53 mi
2:32:22
Rank: #20970 (-144)
Half → 25K
26:57 | 11:07/mi
30K· 18.64 mi
3:09:22
Rank: #21156 (-186)
25K → 30K
37:00 | 11:55/mi
20M
3:24:23
Rank: #21021 (+135)
30K → 20M
15:01 | 11:03/mi
21M
3:36:33
Rank: #20930 (+91)
20M → 21M
12:10 | 12:10/mi
35K· 21.75 mi
3:44:33
Rank: #20840 (+90)
21M → 35K
8:00 | 10:42/mi
23M
3:58:06
Rank: #20674 (+166)
35K → 23M
13:33 | 10:49/mi
24M
4:08:04
Rank: #20501 (+173)
23M → 24M
9:58 | 9:58/mi
40K· 24.85 mi
4:16:55
Rank: #20358 (+143)
24M → 40K
8:51 | 10:21/mi
25.2M
4:21:18
Rank: #20331 (+27)
40K → 25.2M
4:23 | 12:43/mi
Finish· 26.22 mi
4:30:32
Rank: #20154 (+177)
25.2M → Finish
9:14 | 9:04/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time2:05:25
Pace9:34 /mi
2nd Half
Distance13.11 mi
Time2:25:07
Pace11:04 /mi
📊Positive Split: 15.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3525:598:2225:59
8:22
-
10K
6.21 mi11:52:2056:449:0830:45
9:54
+1:32
15K
9.32 mi12:20:461:25:109:0828:26
9:09
-0:45
20K
12.43 mi12:54:381:59:029:3533:52
10:54
+1:45
Half
13.11 mi13:01:012:05:259:346:23
9:21
-1:33
25K
15.53 mi13:27:582:32:229:4926:57
11:07
+1:46
30K
18.64 mi14:04:583:09:2210:1037:00
11:55
+0:48
20M
20.00 mi14:19:593:24:2310:1315:01
11:03
-0:52
21M
21.00 mi14:32:093:36:3310:1912:10
12:10
+1:07
35K
21.75 mi14:40:093:44:3310:208:00
10:42
-1:28
23M
23.00 mi14:53:423:58:0610:2113:33
10:49
+0:07
24M
24.00 mi15:03:404:08:0410:209:58
9:58
-0:51
40K
24.85 mi15:12:314:16:5510:208:51
10:21
+0:23
25.2M
25.20 mi15:16:544:21:1810:224:23
12:43
+2:22
Finish
26.22 mi15:26:084:30:3210:209:14
9:04
-3:39

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

8:22 /mi

Average Pace

10:20 /mi

Slowest Pace

12:43 /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

1:50:45

41% of race

Time at Steady Pace

1:46:14

39% of race

Time at Slower Pace

53:33

20% of race

Average Pace: 10:19 /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 mi11:21:3525:598:2225:59
8:22
#17040
10K
6.21 mi11:52:2056:449:0830:45
9:54
#20382
15K
9.32 mi12:20:461:25:109:0828:26
9:09
#20102
20K
12.43 mi12:54:381:59:029:3533:52
10:54
#20895
Half
13.11 mi13:01:012:05:259:346:23
9:21
#20826
25K
15.53 mi13:27:582:32:229:4926:57
11:07
#20970
30K
18.64 mi14:04:583:09:2210:1037:00
11:55
#21156
20M
20.00 mi14:19:593:24:2310:1315:01
11:03
#21021
21M
21.00 mi14:32:093:36:3310:1912:10
12:10
#20930
35K
21.75 mi14:40:093:44:3310:208:00
10:42
#20840
23M
23.00 mi14:53:423:58:0610:2113:33
10:49
#20674
24M
24.00 mi15:03:404:08:0410:209:58
9:58
#20501
40K
24.85 mi15:12:314:16:5510:208:51
10:21
#20358
25.2M
25.20 mi15:16:544:21:1810:224:23
12:43
#20331
Finish
26.22 mi15:26:084:30:3210:209:14
9:04
#20154
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi170406195619519534(Top 76%)7539(Top 69%)7539(Top 430%)
10K6.21 mi3.10 mi20382-33428062-18678062-186722327(Top 87%)9076(Top 83%)9076(Top 518%)
15K9.32 mi3.11 mi20102+2807889+1737889+17319534(Top 76%)7539(Top 69%)7539(Top 430%)
20K12.43 mi3.11 mi20895-7938303-4148303-41422455(Top 88%)9158(Top 84%)9158(Top 522%)
Half13.11 mi0.68 mi20826+698265+388265+3819647(Top 77%)7688(Top 70%)7688(Top 439%)
25K15.53 mi2.42 mi20970-1448362-978362-9721712(Top 85%)8836(Top 81%)8836(Top 504%)
30K18.64 mi3.11 mi21156-1868518-1568518-15621772(Top 85%)9042(Top 83%)9042(Top 516%)
20M20.00 mi1.36 mi21021+1358481+378481+3719409(Top 76%)7920(Top 73%)7920(Top 452%)
21M21.00 mi1.00 mi20930+918447+348447+3419196(Top 75%)7911(Top 72%)7911(Top 451%)
35K21.75 mi0.75 mi20840+908420+278420+2719094(Top 75%)7889(Top 72%)7889(Top 450%)
23M23.00 mi1.25 mi20674+1668358+628358+6217930(Top 70%)7388(Top 68%)7388(Top 421%)
24M24.00 mi1.00 mi20501+1738284+748284+7416242(Top 64%)6578(Top 60%)6578(Top 375%)
40K24.85 mi0.85 mi20358+1438222+628222+6216245(Top 64%)6628(Top 61%)6628(Top 378%)
25.2M25.20 mi0.35 mi20331+278217+58217+519074(Top 75%)8048(Top 74%)8048(Top 459%)
Finish26.22 mi1.02 mi20154+1778130+878130+8714541(Top 57%)5753(Top 53%)5753(Top 328%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

19534

Females

7539

F45-49

7539

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

22327

Females

9076

F45-49

9076

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

19534

Females

7539

F45-49

7539

15K→20K

9.3 - 12.4 mi

Top 88%
×5stories
+106ft-86ft

Overall

22455

Females

9158

F45-49

9158

20K→Half

12.4 - 13.1 mi

Top 77%
×2stories
+19ft-37ft

Overall

19647

Females

7688

F45-49

7688

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

21712

Females

8836

F45-49

8836

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

21772

Females

9042

F45-49

9042

30K→20M

18.6 - 20.0 mi

Top 76%
×5stories
+64ft-50ft

Overall

19409

Females

7920

F45-49

7920

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

19196

Females

7911

F45-49

7911

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

19094

Females

7889

F45-49

7889

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

17930

Females

7388

F45-49

7388

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

16242

Females

6578

F45-49

6578

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16245

Females

6628

F45-49

6628

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19074

Females

8048

F45-49

8048

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

14541

Females

5753

F45-49

5753

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1775
Passed By
4889
Net Change
-3114
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17040
5K → 10K03342-3342#17040#20382
10K → 15K35575+280#20382#20102
15K → 20K37830-793#20102#20895
20K → Half767+69#20895#20826
Half → 25K101245-144#20826#20970
25K → 30K109295-186#20970#21156
30K → 20M15015+135#21156#21021
20M → 21M11726+91#21021#20930
21M → 35K10515+90#20930#20840
35K → 23M18014+166#20840#20674
23M → 24M1741+173#20674#20501
24M → 40K1507+143#20501#20358
40K → 25.2M4013+27#20358#20331
25.2M → Finish1814+177#20331#20154
TOTALS17754889-3114
📊

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