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BOSTON MARATHON 2026

Natalia Alarcon

Bib: 27951β€’F

NY

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
Race Day Weather
51Β°/41Β°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
31:27
3.11 mi
Rank: #26281
Start β†’ 5K
31:27 | 10:08/mi
10K
1:03:33
6.21 mi
Rank: #26460 (-179)
5K β†’ 10K
32:06 | 10:20/mi
15K
1:36:34
9.32 mi
Rank: #26623 (-163)
10K β†’ 15K
33:01 | 10:38/mi
20K
2:10:59
12.43 mi
Rank: #26749 (-126)
15K β†’ 20K
34:25 | 11:05/mi
HALF
2:17:44
13.11 mi
Rank: #26679 (+70)
20K β†’ HALF
6:45 | 9:55/mi
25K
2:43:34
15.53 mi
Rank: #26527 (+152)
HALF β†’ 25K
25:50 | 10:40/mi
30K
3:16:47
18.64 mi
Rank: #26230 (+297)
25K β†’ 30K
33:13 | 10:42/mi
20M
3:31:23
20.00 mi
Rank: #26090 (+140)
30K β†’ 20M
14:36 | 10:45/mi
21M
3:42:54
21.00 mi
Rank: #26011 (+79)
20M β†’ 21M
11:31 | 11:31/mi
35K
3:50:06
21.75 mi
Rank: #25870 (+141)
21M β†’ 35K
7:12 | 9:38/mi
23M
4:03:06
23.00 mi
Rank: #25727 (+143)
35K β†’ 23M
13:00 | 10:24/mi
24M
4:12:59
24.00 mi
Rank: #25601 (+126)
23M β†’ 24M
9:53 | 9:53/mi
40K
4:21:55
24.85 mi
Rank: #25509 (+92)
24M β†’ 40K
8:56 | 10:27/mi
25.2M
4:25:57
25.20 mi
Rank: #25475 (+34)
40K β†’ 25.2M
4:02 | 11:42/mi
FINISH
4:35:53
26.22 mi
Rank: #25390 (+85)
25.2M β†’ FINISH
9:56 | 9:45/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Halfβš–οΈ Balanced
via HALF
Distance13.11 mi
Time2:17:44
Pace10:31 /mi
2nd Halfβš–οΈ Balanced
Distance13.11 mi
Time2:18:09
Pace10:33 /mi
πŸ“ŠEven Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:3531:2710:0831:27
10:08
-
10K
6.21 mi12:25:411:03:3310:1432:06
10:20
+0:12
15K
9.32 mi12:58:421:36:3410:2233:01
10:38
+0:18
20K
12.43 mi13:33:072:10:5910:3334:25
11:05
+0:27
HALF
13.11 mi13:39:522:17:4410:316:45
9:55
-1:10
25K
15.53 mi14:05:422:43:3410:3225:50
10:40
+0:45
30K
18.64 mi14:38:553:16:4710:3433:13
10:42
+0:02
20M
20.00 mi14:53:313:31:2310:3514:36
10:45
+0:03
21M
21.00 mi15:05:023:42:5410:3711:31
11:31
+0:46
35K
21.75 mi15:12:143:50:0610:357:12
9:38
-1:53
23M
23.00 mi15:25:144:03:0610:3513:00
10:24
+0:46
24M
24.00 mi15:35:074:12:5910:339:53
9:53
-0:31
40K
24.85 mi15:44:034:21:5510:338:56
10:27
+0:34
25.2M
25.20 mi15:48:054:25:5710:344:02
11:42
+1:15
FINISH
26.22 mi15:58:014:35:5310:329:56
9:45
-1:57

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:38 /mi

Average Pace

10:32 /mi

Slowest Pace

11:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

1:05:13

24% of race

Time at Steady Pace

2:26:06

53% of race

Time at Slower Pace

1:04:34

23% of race

Average Pace: 10:31 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi11:53:3531:2710:0831:27
10:08
#26281
10K
6.21 mi12:25:411:03:3310:1432:06
10:20
#26460
15K
9.32 mi12:58:421:36:3410:2233:01
10:38
#26623
20K
12.43 mi13:33:072:10:5910:3334:25
11:05
#26749
HALF
13.11 mi13:39:522:17:4410:316:45
9:55
#26679
25K
15.53 mi14:05:422:43:3410:3225:50
10:40
#26527
30K
18.64 mi14:38:553:16:4710:3433:13
10:42
#26230
20M
20.00 mi14:53:313:31:2310:3514:36
10:45
#26090
21M
21.00 mi15:05:023:42:5410:3711:31
11:31
#26011
35K
21.75 mi15:12:143:50:0610:357:12
9:38
#25870
23M
23.00 mi15:25:144:03:0610:3513:00
10:24
#25727
24M
24.00 mi15:35:074:12:5910:339:53
9:53
#25601
40K
24.85 mi15:44:034:21:5510:338:56
10:27
#25509
25.2M
25.20 mi15:48:054:25:5710:344:02
11:42
#25475
FINISH
26.22 mi15:58:014:35:5310:329:56
9:45
#25390
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi26281108561085626913(Top 93%)11244(Top 89%)11244(Top 912%)
10K6.21 mi3.10 mi26460-17910968-11210968-11226598(Top 92%)11071(Top 88%)11071(Top 898%)
15K9.32 mi3.11 mi26623-16311070-10211070-10226913(Top 93%)11244(Top 89%)11244(Top 912%)
20K12.43 mi3.11 mi26749-12611159-8911159-8927058(Top 93%)11343(Top 90%)11343(Top 920%)
HALF13.11 mi0.68 mi26679+7011122+3711122+3725463(Top 88%)10467(Top 83%)10467(Top 849%)
25K15.53 mi2.42 mi26527+15211038+8411038+8425767(Top 89%)10655(Top 85%)10655(Top 864%)
30K18.64 mi3.11 mi26230+29710899+13910899+13924700(Top 85%)10218(Top 81%)10218(Top 829%)
20M20.00 mi1.36 mi26090+14010829+7010829+7024402(Top 84%)10129(Top 81%)10129(Top 821%)
21M21.00 mi1.00 mi26011+7910804+2510804+2524228(Top 83%)10116(Top 80%)10116(Top 820%)
35K21.75 mi0.75 mi25870+14110732+7210732+7222169(Top 76%)9045(Top 72%)9045(Top 734%)
23M23.00 mi1.25 mi25727+14310678+5410678+5423124(Top 80%)9582(Top 76%)9582(Top 777%)
24M24.00 mi1.00 mi25601+12610620+5810620+5822494(Top 78%)9291(Top 74%)9291(Top 754%)
40K24.85 mi0.85 mi25509+9210588+3210588+3223103(Top 80%)9684(Top 77%)9684(Top 785%)
25.2M25.20 mi0.35 mi25475+3410579+910579+923922(Top 82%)10105(Top 80%)10105(Top 820%)
FINISH26.22 mi1.02 mi25390+8510536+4310536+4323151(Top 80%)9688(Top 77%)9688(Top 786%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
Γ—21
+97ft-345ft

Overall

26913

Females

11244

F50-54

11244

5K→10K

3.1 - 6.2 mi

Top 92%
Γ—5
+79ft-138ft

Overall

26598

Females

11071

F50-54

11071

10K→15K

6.2 - 9.3 mi

Top 93%
Γ—3
+67ft-78ft

Overall

26913

Females

11244

F50-54

11244

15K→20K

9.3 - 12.4 mi

Top 93%
Γ—5
+106ft-86ft

Overall

27058

Females

11343

F50-54

11343

20K→HALF

12.4 - 13.1 mi

Top 88%
Γ—2
+19ft-37ft

Overall

25463

Females

10467

F50-54

10467

HALF→25K

13.1 - 15.5 mi

Top 89%
Γ—4
+66ft-88ft

Overall

25767

Females

10655

F50-54

10655

25K→30K

15.5 - 18.6 mi

Top 85%
Γ—9
+181ft-148ft

Overall

24700

Females

10218

F50-54

10218

30K→20M

18.6 - 20.0 mi

Top 84%
Γ—5
+64ft-50ft

Overall

24402

Females

10129

F50-54

10129

20M→21M

20.0 - 21.0 mi

Top 83%
Γ—8
+106ft-24ft

Overall

24228

Females

10116

F50-54

10116

21M→35K

21.0 - 21.8 mi

Top 76%
Γ—7
+17ft-86ft

Overall

22169

Females

9045

F50-54

9045

35K→23M

21.8 - 23.0 mi

Top 80%
Γ—5
+23ft-63ft

Overall

23124

Females

9582

F50-54

9582

23M→24M

23.0 - 24.0 mi

Top 78%
Γ—6
+12ft-82ft

Overall

22494

Females

9291

F50-54

9291

24M→40K

24.0 - 24.9 mi

Top 80%
Γ—1
+6ft-20ft

Overall

23103

Females

9684

F50-54

9684

40K→25.2M

24.9 - 25.2 mi

Top 82%
Γ—1
+13ft-16ft

Overall

23922

Females

10105

F50-54

10105

25.2M→FINISH

25.2 - 26.2 mi

Top 80%
Γ—2
+22ft-21ft

Overall

23151

Females

9688

F50-54

9688

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1725*
Passed By
678
Net Change
+891
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#26281
5K β†’ 10K131200-179#26281#26460
10K β†’ 15K76200-163#26460#26623
15K β†’ 20K81200-126#26623#26749
20K β†’ HALF711+70#26749#26679
HALF β†’ 25K16614+152#26679#26527
25K β†’ 30K306*9+297#26527#26230
30K β†’ 20M1455+140#26230#26090
20M β†’ 21M9213+79#26090#26011
21M β†’ 35K1421+141#26011#25870
35K β†’ 23M1507+143#25870#25727
23M β†’ 24M1293+126#25727#25601
24M β†’ 40K953+92#25601#25509
40K β†’ 25.2M439+34#25509#25475
25.2M β†’ FINISH9813+85#25475#25390
TOTALS1725*678+891

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

πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace 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