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BOSTON MARATHON 2026

Chelsea Ellis

Bib: 10727•F

CT

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 38%
Gender (Female)
#0 / 12578
Top 21%
Age Group (F18-39)
#0 / 5716
Top 38%
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
22:51
3.11 mi
Rank: #11550
Start → 5K
22:51 | 7:22/mi
10K
45:41
6.21 mi
Rank: #11547 (+3)
5K → 10K
22:50 | 7:21/mi
15K
1:08:29
9.32 mi
Rank: #11479 (+68)
10K → 15K
22:48 | 7:21/mi
20K
1:31:37
12.43 mi
Rank: #11487 (-8)
15K → 20K
23:08 | 7:27/mi
HALF
1:36:35
13.11 mi
Rank: #11467 (+20)
20K → HALF
4:58 | 7:18/mi
25K
1:54:30
15.53 mi
Rank: #11284 (+183)
HALF → 25K
17:55 | 7:24/mi
30K
2:18:18
18.64 mi
Rank: #11198 (+86)
25K → 30K
23:48 | 7:40/mi
20M
2:28:43
20.00 mi
Rank: #11111 (+87)
30K → 20M
10:25 | 7:41/mi
21M
2:36:49
21.00 mi
Rank: #11036 (+75)
20M → 21M
8:06 | 8:06/mi
35K
2:42:29
21.75 mi
Rank: #11019 (+17)
21M → 35K
5:40 | 7:35/mi
23M
2:52:25
23.00 mi
Rank: #11044 (-25)
35K → 23M
9:56 | 7:57/mi
24M
2:59:58
24.00 mi
Rank: #10954 (+90)
23M → 24M
7:33 | 7:33/mi
40K
3:06:33
24.85 mi
Rank: #10910 (+44)
24M → 40K
6:35 | 7:42/mi
25.2M
3:09:26
25.20 mi
Rank: #10887 (+23)
40K → 25.2M
2:53 | 8:22/mi
FINISH
3:17:15
26.22 mi
Rank: #10928 (-41)
25.2M → FINISH
7:49 | 7:41/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:36:35
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:40:40
Pace7:41 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:41:1022:517:2222:51
7:22
-
10K
6.21 mi11:04:0045:417:2222:50
7:21
-0:01
15K
9.32 mi11:26:481:08:297:2122:48
7:21
0:00
20K
12.43 mi11:49:561:31:377:2323:08
7:27
+0:06
HALF
13.11 mi11:54:541:36:357:234:58
7:18
-0:09
25K
15.53 mi12:12:491:54:307:2317:55
7:24
+0:06
30K
18.64 mi12:36:372:18:187:2623:48
7:40
+0:16
20M
20.00 mi12:47:022:28:437:2710:25
7:41
+0:01
21M
21.00 mi12:55:082:36:497:298:06
8:06
+0:25
35K
21.75 mi13:00:482:42:297:295:40
7:35
-0:31
23M
23.00 mi13:10:442:52:257:309:56
7:57
+0:22
24M
24.00 mi13:18:172:59:587:307:33
7:33
-0:24
40K
24.85 mi13:24:523:06:337:316:35
7:42
+0:09
25.2M
25.20 mi13:27:453:09:267:322:53
8:22
+0:40
FINISH
26.22 mi13:35:343:17:157:327:49
7:41
-0:41

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

7:18 /mi

Average Pace

7:32 /mi

Slowest Pace

8:22 /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

3:06:16

94% of race

Time at Steady Pace

10:59

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:41:1022:517:2222:51
7:22
#11550
10K
6.21 mi11:04:0045:417:2222:50
7:21
#11547
15K
9.32 mi11:26:481:08:297:2122:48
7:21
#11479
20K
12.43 mi11:49:561:31:377:2323:08
7:27
#11487
HALF
13.11 mi11:54:541:36:357:234:58
7:18
#11467
25K
15.53 mi12:12:491:54:307:2317:55
7:24
#11284
30K
18.64 mi12:36:372:18:187:2623:48
7:40
#11198
20M
20.00 mi12:47:022:28:437:2710:25
7:41
#11111
21M
21.00 mi12:55:082:36:497:298:06
8:06
#11036
35K
21.75 mi13:00:482:42:297:295:40
7:35
#11019
23M
23.00 mi13:10:442:52:257:309:56
7:57
#11044
24M
24.00 mi13:18:172:59:587:307:33
7:33
#10954
40K
24.85 mi13:24:523:06:337:316:35
7:42
#10910
25.2M
25.20 mi13:27:453:09:267:322:53
8:22
#10887
FINISH
26.22 mi13:35:343:17:157:327:49
7:41
#10928
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 mi115502667266711440(Top 39%)2708(Top 22%)2708(Top 47%)
10K6.21 mi3.10 mi11547+32691-242691-2411614(Top 40%)2765(Top 22%)2765(Top 48%)
15K9.32 mi3.11 mi11479+682682+92682+911440(Top 39%)2708(Top 22%)2708(Top 47%)
20K12.43 mi3.11 mi11487-82710-282710-2811532(Top 40%)2848(Top 23%)2848(Top 50%)
HALF13.11 mi0.68 mi11467+202709+12709+111141(Top 38%)2554(Top 20%)2554(Top 45%)
25K15.53 mi2.42 mi11284+1832633+762633+7610497(Top 36%)2388(Top 19%)2388(Top 42%)
30K18.64 mi3.11 mi11198+862644-112644-1110937(Top 38%)2730(Top 22%)2730(Top 48%)
20M20.00 mi1.36 mi11111+872629+152629+1510399(Top 36%)2596(Top 21%)2596(Top 45%)
21M21.00 mi1.00 mi11036+752619+102619+1010572(Top 36%)2763(Top 22%)2763(Top 48%)
35K21.75 mi0.75 mi11019+172624-52624-511410(Top 39%)3210(Top 26%)3210(Top 56%)
23M23.00 mi1.25 mi11044-252654-302654-3012046(Top 42%)3618(Top 29%)3618(Top 63%)
24M24.00 mi1.00 mi10954+902647+72647+710494(Top 36%)2909(Top 23%)2909(Top 51%)
40K24.85 mi0.85 mi10910+442644+32644+310343(Top 36%)2917(Top 23%)2917(Top 51%)
25.2M25.20 mi0.35 mi10887+232639+52639+510768(Top 37%)3209(Top 26%)3209(Top 56%)
FINISH26.22 mi1.02 mi10928-412685-462685-4612762(Top 44%)4258(Top 34%)4258(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21
+97ft-345ft

Overall

11440

Females

2708

F18-39

2708

5K→10K

3.1 - 6.2 mi

Top 40%
×5
+79ft-138ft

Overall

11614

Females

2765

F18-39

2765

10K→15K

6.2 - 9.3 mi

Top 39%
×3
+67ft-78ft

Overall

11440

Females

2708

F18-39

2708

15K→20K

9.3 - 12.4 mi

Top 40%
×5
+106ft-86ft

Overall

11532

Females

2848

F18-39

2848

20K→HALF

12.4 - 13.1 mi

Top 38%
×2
+19ft-37ft

Overall

11141

Females

2554

F18-39

2554

HALF→25K

13.1 - 15.5 mi

Top 36%
×4
+66ft-88ft

Overall

10497

Females

2388

F18-39

2388

25K→30K

15.5 - 18.6 mi

Top 38%
×9
+181ft-148ft

Overall

10937

Females

2730

F18-39

2730

30K→20M

18.6 - 20.0 mi

Top 36%
×5
+64ft-50ft

Overall

10399

Females

2596

F18-39

2596

20M→21M

20.0 - 21.0 mi

Top 36%
×8
+106ft-24ft

Overall

10572

Females

2763

F18-39

2763

21M→35K

21.0 - 21.8 mi

Top 39%
×7
+17ft-86ft

Overall

11410

Females

3210

F18-39

3210

35K→23M

21.8 - 23.0 mi

Top 42%
×5
+23ft-63ft

Overall

12046

Females

3618

F18-39

3618

23M→24M

23.0 - 24.0 mi

Top 36%
×6
+12ft-82ft

Overall

10494

Females

2909

F18-39

2909

24M→40K

24.0 - 24.9 mi

Top 36%
×1
+6ft-20ft

Overall

10343

Females

2917

F18-39

2917

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1
+13ft-16ft

Overall

10768

Females

3209

F18-39

3209

25.2M→FINISH

25.2 - 26.2 mi

Top 44%
×2
+22ft-21ft

Overall

12762

Females

4258

F18-39

4258

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1817*
Passed By
1195
Net Change
+622
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11550
5K → 10K203*200+3#11550#11547
10K → 15K223*155+68#11547#11479
15K → 20K149157-8#11479#11487
20K → HALF3717+20#11487#11467
HALF → 25K216*33+183#11467#11284
25K → 30K236*150+86#11284#11198
30K → 20M13144+87#11198#11111
20M → 21M14166+75#11111#11036
21M → 35K6346+17#11036#11019
35K → 23M90115-25#11019#11044
23M → 24M12737+90#11044#10954
24M → 40K9955+44#10954#10910
40K → 25.2M4421+23#10910#10887
25.2M → FINISH5899-41#10887#10928
TOTALS1817*1195+622

* 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