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BOSTON MARATHON 2026

Chelsea Dunton

Bib: 14420•F

CA

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 32%
Gender (Female)
#0 / 12578
Top 15%
Age Group (F18-39)
#0 / 5716
Top 27%
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
22:49
3.11 mi
Rank: #11426
Start → 5K
22:49 | 7:21/mi
10K
45:47
6.21 mi
Rank: #11691 (-265)
5K → 10K
22:58 | 7:24/mi
15K
1:08:29
9.32 mi
Rank: #11476 (+215)
10K → 15K
22:42 | 7:19/mi
20K
1:31:06
12.43 mi
Rank: #11128 (+348)
15K → 20K
22:37 | 7:17/mi
HALF
1:35:58
13.11 mi
Rank: #11045 (+83)
20K → HALF
4:52 | 7:09/mi
25K
1:53:27
15.53 mi
Rank: #10618 (+427)
HALF → 25K
17:29 | 7:13/mi
30K
2:16:44
18.64 mi
Rank: #10373 (+245)
25K → 30K
23:17 | 7:30/mi
20M
2:26:40
20.00 mi
Rank: #10119 (+254)
30K → 20M
9:56 | 7:19/mi
21M
2:34:15
21.00 mi
Rank: #9905 (+214)
20M → 21M
7:35 | 7:35/mi
35K
2:39:26
21.75 mi
Rank: #9740 (+165)
21M → 35K
5:11 | 6:56/mi
23M
2:48:34
23.00 mi
Rank: #9529 (+211)
35K → 23M
9:08 | 7:18/mi
24M
2:55:51
24.00 mi
Rank: #9428 (+101)
23M → 24M
7:17 | 7:17/mi
40K
3:02:06
24.85 mi
Rank: #9337 (+91)
24M → 40K
6:15 | 7:19/mi
25.2M
3:04:54
25.20 mi
Rank: #9312 (+25)
40K → 25.2M
2:48 | 8:08/mi
FINISH
3:12:03
26.22 mi
Rank: #9215 (+97)
25.2M → FINISH
7:09 | 7:01/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:35:58
Pace7:20 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:36:05
Pace7:20 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5622:497:2122:49
7:21
-
10K
6.21 mi11:15:5445:477:2322:58
7:24
+0:03
15K
9.32 mi11:38:361:08:297:2122:42
7:19
-0:05
20K
12.43 mi12:01:131:31:067:2022:37
7:17
-0:02
HALF
13.11 mi12:06:051:35:587:204:52
7:09
-0:08
25K
15.53 mi12:23:341:53:277:1917:29
7:13
+0:04
30K
18.64 mi12:46:512:16:447:2123:17
7:30
+0:17
20M
20.00 mi12:56:472:26:407:219:56
7:19
-0:11
21M
21.00 mi13:04:222:34:157:217:35
7:35
+0:16
35K
21.75 mi13:09:332:39:267:205:11
6:56
-0:39
23M
23.00 mi13:18:412:48:347:209:08
7:18
+0:22
24M
24.00 mi13:25:582:55:517:207:17
7:17
-0:01
40K
24.85 mi13:32:133:02:067:206:15
7:19
+0:02
25.2M
25.20 mi13:35:013:04:547:212:48
8:08
+0:49
FINISH
26.22 mi13:42:103:12:037:207:09
7:01
-1:07

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

6:56 /mi

Average Pace

7:20 /mi

Slowest Pace

8:08 /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

3:09:15

99% of race

Time at Steady Pace

2:48

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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 mi10:52:5622:497:2122:49
7:21
#11426
10K
6.21 mi11:15:5445:477:2322:58
7:24
#11691
15K
9.32 mi11:38:361:08:297:2122:42
7:19
#11476
20K
12.43 mi12:01:131:31:067:2022:37
7:17
#11128
HALF
13.11 mi12:06:051:35:587:204:52
7:09
#11045
25K
15.53 mi12:23:341:53:277:1917:29
7:13
#10618
30K
18.64 mi12:46:512:16:447:2123:17
7:30
#10373
20M
20.00 mi12:56:472:26:407:219:56
7:19
#10119
21M
21.00 mi13:04:222:34:157:217:35
7:35
#9905
35K
21.75 mi13:09:332:39:267:205:11
6:56
#9740
23M
23.00 mi13:18:412:48:347:209:08
7:18
#9529
24M
24.00 mi13:25:582:55:517:207:17
7:17
#9428
40K
24.85 mi13:32:133:02:067:206:15
7:19
#9337
25.2M
25.20 mi13:35:013:04:547:212:48
8:08
#9312
FINISH
26.22 mi13:42:103:12:037:207:09
7:01
#9215
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 mi114262599259911115(Top 38%)2530(Top 20%)2530(Top 44%)
10K6.21 mi3.10 mi11691-2652760-1612760-16112012(Top 41%)2971(Top 24%)2971(Top 52%)
15K9.32 mi3.11 mi11476+2152679+812679+8111115(Top 38%)2530(Top 20%)2530(Top 44%)
20K12.43 mi3.11 mi11128+3482529+1502529+15010001(Top 34%)2044(Top 16%)2044(Top 36%)
HALF13.11 mi0.68 mi11045+832491+382491+389824(Top 34%)1894(Top 15%)1894(Top 33%)
25K15.53 mi2.42 mi10618+4272304+1872304+1878971(Top 31%)1641(Top 13%)1641(Top 29%)
30K18.64 mi3.11 mi10373+2452230+742230+749628(Top 33%)2101(Top 17%)2101(Top 37%)
20M20.00 mi1.36 mi10119+2542123+1072123+1077783(Top 27%)1394(Top 11%)1394(Top 24%)
21M21.00 mi1.00 mi9905+2142036+872036+877080(Top 24%)1240(Top 10%)1240(Top 22%)
35K21.75 mi0.75 mi9740+1651971+651971+656646(Top 23%)1056(Top 8%)1056(Top 18%)
23M23.00 mi1.25 mi9529+2111904+671904+677492(Top 26%)1422(Top 11%)1422(Top 25%)
24M24.00 mi1.00 mi9428+1011878+261878+268510(Top 29%)1958(Top 16%)1958(Top 34%)
40K24.85 mi0.85 mi9337+911865+131865+137550(Top 26%)1610(Top 13%)1610(Top 28%)
25.2M25.20 mi0.35 mi9312+251863+21863+29134(Top 31%)2399(Top 19%)2399(Top 42%)
FINISH26.22 mi1.02 mi9215+971853+101853+107742(Top 27%)1798(Top 14%)1798(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21
+97ft-345ft

Overall

11115

Females

2530

F18-39

2530

5K→10K

3.1 - 6.2 mi

Top 41%
×5
+79ft-138ft

Overall

12012

Females

2971

F18-39

2971

10K→15K

6.2 - 9.3 mi

Top 38%
×3
+67ft-78ft

Overall

11115

Females

2530

F18-39

2530

15K→20K

9.3 - 12.4 mi

Top 34%
×5
+106ft-86ft

Overall

10001

Females

2044

F18-39

2044

20K→HALF

12.4 - 13.1 mi

Top 34%
×2
+19ft-37ft

Overall

9824

Females

1894

F18-39

1894

HALF→25K

13.1 - 15.5 mi

Top 31%
×4
+66ft-88ft

Overall

8971

Females

1641

F18-39

1641

25K→30K

15.5 - 18.6 mi

Top 33%
×9
+181ft-148ft

Overall

9628

Females

2101

F18-39

2101

30K→20M

18.6 - 20.0 mi

Top 27%
×5
+64ft-50ft

Overall

7783

Females

1394

F18-39

1394

20M→21M

20.0 - 21.0 mi

Top 24%
×8
+106ft-24ft

Overall

7080

Females

1240

F18-39

1240

21M→35K

21.0 - 21.8 mi

Top 23%
×7
+17ft-86ft

Overall

6646

Females

1056

F18-39

1056

35K→23M

21.8 - 23.0 mi

Top 26%
×5
+23ft-63ft

Overall

7492

Females

1422

F18-39

1422

23M→24M

23.0 - 24.0 mi

Top 29%
×6
+12ft-82ft

Overall

8510

Females

1958

F18-39

1958

24M→40K

24.0 - 24.9 mi

Top 26%
×1
+6ft-20ft

Overall

7550

Females

1610

F18-39

1610

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1
+13ft-16ft

Overall

9134

Females

2399

F18-39

2399

25.2M→FINISH

25.2 - 26.2 mi

Top 27%
×2
+22ft-21ft

Overall

7742

Females

1798

F18-39

1798

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2945*
Passed By
733
Net Change
+2211
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11426
5K → 10K152416-265#11426#11691
10K → 15K31297+215#11691#11476
15K → 20K36416+348#11476#11128
20K → HALF896+83#11128#11045
HALF → 25K4369+427#11045#10618
25K → 30K31570+245#10618#10373
30K → 20M2551+254#10373#10119
20M → 21M221*7+214#10119#9905
21M → 35K1683+165#9905#9740
35K → 23M22110+211#9740#9529
23M → 24M12322+101#9529#9428
24M → 40K11524+91#9428#9337
40K → 25.2M4015+25#9337#9312
25.2M → FINISH13437+97#9312#9215
TOTALS2945*733+2211

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

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📊

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