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BOSTON MARATHON 2026

Courtney Sellig

Bib: 17045•F

NY

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 33%
Gender (Female)
#0 / 12578
Top 16%
Age Group (F18-39)
#0 / 5716
Top 30%
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
22:31
3.11 mi
Rank: #10612
Start → 5K
22:31 | 7:15/mi
10K
45:06
6.21 mi
Rank: #10726 (-114)
5K → 10K
22:35 | 7:17/mi
15K
1:07:32
9.32 mi
Rank: #10570 (+156)
10K → 15K
22:26 | 7:14/mi
20K
1:30:08
12.43 mi
Rank: #10373 (+197)
15K → 20K
22:36 | 7:17/mi
HALF
1:34:59
13.11 mi
Rank: #10329 (+44)
20K → HALF
4:51 | 7:07/mi
25K
1:52:31
15.53 mi
Rank: #10096 (+233)
HALF → 25K
17:32 | 7:14/mi
30K
2:15:37
18.64 mi
Rank: #9864 (+232)
25K → 30K
23:06 | 7:27/mi
20M
2:25:53
20.00 mi
Rank: #9784 (+80)
30K → 20M
10:16 | 7:34/mi
21M
2:33:40
21.00 mi
Rank: #9678 (+106)
20M → 21M
7:47 | 7:47/mi
35K
2:39:08
21.75 mi
Rank: #9629 (+49)
21M → 35K
5:28 | 7:19/mi
23M
2:48:37
23.00 mi
Rank: #9553 (+76)
35K → 23M
9:29 | 7:35/mi
24M
2:56:14
24.00 mi
Rank: #9597 (-44)
23M → 24M
7:37 | 7:37/mi
40K
3:02:49
24.85 mi
Rank: #9605 (-8)
24M → 40K
6:35 | 7:42/mi
25.2M
3:05:40
25.20 mi
Rank: #9587 (+18)
40K → 25.2M
2:51 | 8:16/mi
FINISH
3:13:13
26.22 mi
Rank: #9606 (-19)
25.2M → FINISH
7:33 | 7:25/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:59
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:38:14
Pace7:30 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:03:4722:317:1522:31
7:15
-
10K
6.21 mi11:26:2245:067:1622:35
7:17
+0:02
15K
9.32 mi11:48:481:07:327:1522:26
7:14
-0:03
20K
12.43 mi12:11:241:30:087:1622:36
7:17
+0:03
HALF
13.11 mi12:16:151:34:597:154:51
7:07
-0:10
25K
15.53 mi12:33:471:52:317:1517:32
7:14
+0:07
30K
18.64 mi12:56:532:15:377:1723:06
7:27
+0:13
20M
20.00 mi13:07:092:25:537:1810:16
7:34
+0:07
21M
21.00 mi13:14:562:33:407:207:47
7:47
+0:13
35K
21.75 mi13:20:242:39:087:205:28
7:19
-0:28
23M
23.00 mi13:29:532:48:377:209:29
7:35
+0:16
24M
24.00 mi13:37:302:56:147:217:37
7:37
+0:02
40K
24.85 mi13:44:053:02:497:226:35
7:42
+0:05
25.2M
25.20 mi13:46:563:05:407:232:51
8:16
+0:34
FINISH
26.22 mi13:54:293:13:137:237:33
7:25
-0:51

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

7:07 /mi

Average Pace

7:22 /mi

Slowest Pace

8:16 /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

3:10:22

99% of race

Time at Steady Pace

2:51

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi11:03:4722:317:1522:31
7:15
#10612
10K
6.21 mi11:26:2245:067:1622:35
7:17
#10726
15K
9.32 mi11:48:481:07:327:1522:26
7:14
#10570
20K
12.43 mi12:11:241:30:087:1622:36
7:17
#10373
HALF
13.11 mi12:16:151:34:597:154:51
7:07
#10329
25K
15.53 mi12:33:471:52:317:1517:32
7:14
#10096
30K
18.64 mi12:56:532:15:377:1723:06
7:27
#9864
20M
20.00 mi13:07:092:25:537:1810:16
7:34
#9784
21M
21.00 mi13:14:562:33:407:207:47
7:47
#9678
35K
21.75 mi13:20:242:39:087:205:28
7:19
#9629
23M
23.00 mi13:29:532:48:377:209:29
7:35
#9553
24M
24.00 mi13:37:302:56:147:217:37
7:37
#9597
40K
24.85 mi13:44:053:02:497:226:35
7:42
#9605
25.2M
25.20 mi13:46:563:05:407:232:51
8:16
#9587
FINISH
26.22 mi13:54:293:13:137:237:33
7:25
#9606
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi106122189218910313(Top 36%)2112(Top 17%)2112(Top 37%)
10K6.21 mi3.10 mi10726-1142257-682257-6810885(Top 38%)2360(Top 19%)2360(Top 41%)
15K9.32 mi3.11 mi10570+1562202+552202+5510313(Top 36%)2112(Top 17%)2112(Top 37%)
20K12.43 mi3.11 mi10373+1972133+692133+699964(Top 34%)2029(Top 16%)2029(Top 35%)
HALF13.11 mi0.68 mi10329+442116+172116+179650(Top 33%)1823(Top 14%)1823(Top 32%)
25K15.53 mi2.42 mi10096+2332033+832033+839142(Top 32%)1716(Top 14%)1716(Top 30%)
30K18.64 mi3.11 mi9864+2321969+641969+649140(Top 31%)1863(Top 15%)1863(Top 33%)
20M20.00 mi1.36 mi9784+801960+91960+99524(Top 33%)2156(Top 17%)2156(Top 38%)
21M21.00 mi1.00 mi9678+1061933+271933+278424(Top 29%)1788(Top 14%)1788(Top 31%)
35K21.75 mi0.75 mi9629+491921+121921+129390(Top 32%)2192(Top 17%)2192(Top 38%)
23M23.00 mi1.25 mi9553+761917+41917+49445(Top 33%)2301(Top 18%)2301(Top 40%)
24M24.00 mi1.00 mi9597-441956-391956-3910978(Top 38%)3146(Top 25%)3146(Top 55%)
40K24.85 mi0.85 mi9605-81983-271983-2710328(Top 36%)2902(Top 23%)2902(Top 51%)
25.2M25.20 mi0.35 mi9587+181993-101993-1010083(Top 35%)2847(Top 23%)2847(Top 50%)
FINISH26.22 mi1.02 mi9606-192039-462039-4610733(Top 37%)3207(Top 25%)3207(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21
+97ft-345ft

Overall

10313

Females

2112

F18-39

2112

5K→10K

3.1 - 6.2 mi

Top 38%
×5
+79ft-138ft

Overall

10885

Females

2360

F18-39

2360

10K→15K

6.2 - 9.3 mi

Top 36%
×3
+67ft-78ft

Overall

10313

Females

2112

F18-39

2112

15K→20K

9.3 - 12.4 mi

Top 34%
×5
+106ft-86ft

Overall

9964

Females

2029

F18-39

2029

20K→HALF

12.4 - 13.1 mi

Top 33%
×2
+19ft-37ft

Overall

9650

Females

1823

F18-39

1823

HALF→25K

13.1 - 15.5 mi

Top 32%
×4
+66ft-88ft

Overall

9142

Females

1716

F18-39

1716

25K→30K

15.5 - 18.6 mi

Top 31%
×9
+181ft-148ft

Overall

9140

Females

1863

F18-39

1863

30K→20M

18.6 - 20.0 mi

Top 33%
×5
+64ft-50ft

Overall

9524

Females

2156

F18-39

2156

20M→21M

20.0 - 21.0 mi

Top 29%
×8
+106ft-24ft

Overall

8424

Females

1788

F18-39

1788

21M→35K

21.0 - 21.8 mi

Top 32%
×7
+17ft-86ft

Overall

9390

Females

2192

F18-39

2192

35K→23M

21.8 - 23.0 mi

Top 33%
×5
+23ft-63ft

Overall

9445

Females

2301

F18-39

2301

23M→24M

23.0 - 24.0 mi

Top 38%
×6
+12ft-82ft

Overall

10978

Females

3146

F18-39

3146

24M→40K

24.0 - 24.9 mi

Top 36%
×1
+6ft-20ft

Overall

10328

Females

2902

F18-39

2902

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1
+13ft-16ft

Overall

10083

Females

2847

F18-39

2847

25.2M→FINISH

25.2 - 26.2 mi

Top 37%
×2
+22ft-21ft

Overall

10733

Females

3207

F18-39

3207

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1997*
Passed By
891
Net Change
+1006
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10612
5K → 10K185200-114#10612#10726
10K → 15K234*78+156#10726#10570
15K → 20K266*69+197#10570#10373
20K → HALF5511+44#10373#10329
HALF → 25K247*14+233#10329#10096
25K → 30K295*63+232#10096#9864
30K → 20M12848+80#9864#9784
20M → 21M13731+106#9784#9678
21M → 35K7526+49#9678#9629
35K → 23M12751+76#9629#9553
23M → 24M65109-44#9553#9597
24M → 40K6674-8#9597#9605
40K → 25.2M4325+18#9605#9587
25.2M → FINISH7492-19#9587#9606
TOTALS1997*891+1006

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

📊

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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing