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BOSTON MARATHON 2026

Katherine Andersen

Bib: 16523•F

OR

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0:00
/ mi
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Overall
#0 / 29021
Top 43%
Gender (Female)
#0 / 12578
Top 28%
Age Group (F18-39)
#0 / 5716
Top 47%
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
21:58
3.11 mi
Rank: #9139
Start → 5K
21:58 | 7:05/mi
10K
44:00
6.21 mi
Rank: #9209 (-70)
5K → 10K
22:02 | 7:06/mi
15K
1:06:21
9.32 mi
Rank: #9425 (-216)
10K → 15K
22:21 | 7:12/mi
20K
1:29:08
12.43 mi
Rank: #9649 (-224)
15K → 20K
22:47 | 7:20/mi
HALF
1:34:08
13.11 mi
Rank: #9740 (-91)
20K → HALF
5:00 | 7:21/mi
25K
1:52:12
15.53 mi
Rank: #9924 (-184)
HALF → 25K
18:04 | 7:27/mi
30K
2:16:44
18.64 mi
Rank: #10375 (-451)
25K → 30K
24:32 | 7:54/mi
20M
2:28:05
20.00 mi
Rank: #10804 (-429)
30K → 20M
11:21 | 8:22/mi
21M
2:37:23
21.00 mi
Rank: #11261 (-457)
20M → 21M
9:18 | 9:18/mi
35K
2:43:27
21.75 mi
Rank: #11384 (-123)
21M → 35K
6:04 | 8:07/mi
23M
2:54:12
23.00 mi
Rank: #11703 (-319)
35K → 23M
10:45 | 8:36/mi
24M
3:02:25
24.00 mi
Rank: #11845 (-142)
23M → 24M
8:13 | 8:13/mi
40K
3:09:57
24.85 mi
Rank: #12099 (-254)
24M → 40K
7:32 | 8:49/mi
25.2M
3:13:16
25.20 mi
Rank: #12201 (-102)
40K → 25.2M
3:19 | 9:38/mi
FINISH
3:22:04
26.22 mi
Rank: #12495 (-294)
25.2M → FINISH
8:48 | 8:39/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:08
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:47:56
Pace8:14 /mi
📊Positive Split: 14.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:03:0621:587:0521:58
7:05
-
10K
6.21 mi11:25:0844:007:0522:02
7:06
+0:01
15K
9.32 mi11:47:291:06:217:0822:21
7:12
+0:06
20K
12.43 mi12:10:161:29:087:1122:47
7:20
+0:08
HALF
13.11 mi12:15:161:34:087:115:00
7:21
+0:01
25K
15.53 mi12:33:201:52:127:1418:04
7:27
+0:06
30K
18.64 mi12:57:522:16:447:2124:32
7:54
+0:27
20M
20.00 mi13:09:132:28:057:2511:21
8:22
+0:28
21M
21.00 mi13:18:312:37:237:309:18
9:18
+0:56
35K
21.75 mi13:24:352:43:277:316:04
8:07
-1:11
23M
23.00 mi13:35:202:54:127:3510:45
8:36
+0:29
24M
24.00 mi13:43:333:02:257:378:13
8:13
-0:23
40K
24.85 mi13:51:053:09:577:397:32
8:49
+0:36
25.2M
25.20 mi13:54:243:13:167:413:19
9:38
+0:49
FINISH
26.22 mi14:03:123:22:047:438:48
8:39
-0:59

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

7:05 /mi

Average Pace

7:43 /mi

Slowest Pace

9:38 /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

1:52:12

56% of race

Time at Steady Pace

50:10

25% of race

Time at Slower Pace

39:42

20% of race

Average Pace: 7:42 /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 mi11:03:0621:587:0521:58
7:05
#9139
10K
6.21 mi11:25:0844:007:0522:02
7:06
#9209
15K
9.32 mi11:47:291:06:217:0822:21
7:12
#9425
20K
12.43 mi12:10:161:29:087:1122:47
7:20
#9649
HALF
13.11 mi12:15:161:34:087:115:00
7:21
#9740
25K
15.53 mi12:33:201:52:127:1418:04
7:27
#9924
30K
18.64 mi12:57:522:16:447:2124:32
7:54
#10375
20M
20.00 mi13:09:132:28:057:2511:21
8:22
#10804
21M
21.00 mi13:18:312:37:237:309:18
9:18
#11261
35K
21.75 mi13:24:352:43:277:316:04
8:07
#11384
23M
23.00 mi13:35:202:54:127:3510:45
8:36
#11703
24M
24.00 mi13:43:333:02:257:378:13
8:13
#11845
40K
24.85 mi13:51:053:09:577:397:32
8:49
#12099
25.2M
25.20 mi13:54:243:13:167:413:19
9:38
#12201
FINISH
26.22 mi14:03:123:22:047:438:48
8:39
#12495
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 mi91391472147210098(Top 35%)2004(Top 16%)2004(Top 35%)
10K6.21 mi3.10 mi9209-701517-451517-459372(Top 32%)1628(Top 13%)1628(Top 28%)
15K9.32 mi3.11 mi9425-2161635-1181635-11810098(Top 35%)2004(Top 16%)2004(Top 35%)
20K12.43 mi3.11 mi9649-2241762-1271762-12710509(Top 36%)2317(Top 18%)2317(Top 41%)
HALF13.11 mi0.68 mi9740-911814-521814-5211590(Top 40%)2815(Top 22%)2815(Top 49%)
25K15.53 mi2.42 mi9924-1841934-1201934-12011034(Top 38%)2657(Top 21%)2657(Top 46%)
30K18.64 mi3.11 mi10375-4512232-2982232-29812713(Top 44%)3689(Top 29%)3689(Top 65%)
20M20.00 mi1.36 mi10804-4292475-2432475-24315262(Top 53%)5216(Top 41%)5216(Top 91%)
21M21.00 mi1.00 mi11261-4572724-2492724-24917617(Top 61%)6572(Top 52%)6572(Top 115%)
35K21.75 mi0.75 mi11384-1232792-682792-6815218(Top 52%)5291(Top 42%)5291(Top 93%)
23M23.00 mi1.25 mi11703-3193008-2163008-21616249(Top 56%)5973(Top 47%)5973(Top 104%)
24M24.00 mi1.00 mi11845-1423117-1093117-10915191(Top 52%)5434(Top 43%)5434(Top 95%)
40K24.85 mi0.85 mi12099-2543296-1793296-17917448(Top 60%)6746(Top 54%)6746(Top 118%)
25.2M25.20 mi0.35 mi12201-1023353-573353-5717870(Top 62%)6933(Top 55%)6933(Top 121%)
FINISH26.22 mi1.02 mi12495-2943539-1863539-18618839(Top 65%)7471(Top 59%)7471(Top 131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21
+97ft-345ft

Overall

10098

Females

2004

F18-39

2004

5K→10K

3.1 - 6.2 mi

Top 32%
×5
+79ft-138ft

Overall

9372

Females

1628

F18-39

1628

10K→15K

6.2 - 9.3 mi

Top 35%
×3
+67ft-78ft

Overall

10098

Females

2004

F18-39

2004

15K→20K

9.3 - 12.4 mi

Top 36%
×5
+106ft-86ft

Overall

10509

Females

2317

F18-39

2317

20K→HALF

12.4 - 13.1 mi

Top 40%
×2
+19ft-37ft

Overall

11590

Females

2815

F18-39

2815

HALF→25K

13.1 - 15.5 mi

Top 38%
×4
+66ft-88ft

Overall

11034

Females

2657

F18-39

2657

25K→30K

15.5 - 18.6 mi

Top 44%
×9
+181ft-148ft

Overall

12713

Females

3689

F18-39

3689

30K→20M

18.6 - 20.0 mi

Top 53%
×5
+64ft-50ft

Overall

15262

Females

5216

F18-39

5216

20M→21M

20.0 - 21.0 mi

Top 61%
×8
+106ft-24ft

Overall

17617

Females

6572

F18-39

6572

21M→35K

21.0 - 21.8 mi

Top 52%
×7
+17ft-86ft

Overall

15218

Females

5291

F18-39

5291

35K→23M

21.8 - 23.0 mi

Top 56%
×5
+23ft-63ft

Overall

16249

Females

5973

F18-39

5973

23M→24M

23.0 - 24.0 mi

Top 52%
×6
+12ft-82ft

Overall

15191

Females

5434

F18-39

5434

24M→40K

24.0 - 24.9 mi

Top 60%
×1
+6ft-20ft

Overall

17448

Females

6746

F18-39

6746

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1
+13ft-16ft

Overall

17870

Females

6933

F18-39

6933

25.2M→FINISH

25.2 - 26.2 mi

Top 65%
×2
+22ft-21ft

Overall

18839

Females

7471

F18-39

7471

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
751
Passed By
2560
Net Change
-3356
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9139
5K → 10K194200-70#9139#9209
10K → 15K77200-216#9209#9425
15K → 20K86200-224#9425#9649
20K → HALF697-91#9649#9740
HALF → 25K68200-184#9740#9924
25K → 30K101200-451#9924#10375
30K → 20M18200-429#10375#10804
20M → 21M18200-457#10804#11261
21M → 35K33156-123#11261#11384
35K → 23M34200-319#11384#11703
23M → 24M52194-142#11703#11845
24M → 40K35200-254#11845#12099
40K → 25.2M11113-102#12099#12201
25.2M → FINISH18200-294#12201#12495
TOTALS7512560-3356
📊

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