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BOSTON MARATHON 2026

Ali Nelson

Bib: 16757•F

OR

0:00
0:00
/ mi
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Overall
#0 / 29021
Top 37%
Gender (Female)
#0 / 12578
Top 20%
Division (F18-39)
#0 / 5716
Top 36%
Race Day Weather
51°/41°F
overcast clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:11
Rank: #15275
Start → 5K
24:11 | 7:48/mi
10K· 6.21 mi
47:43
Rank: #14428 (+847)
5K → 10K
23:32 | 7:35/mi
15K· 9.32 mi
1:10:53
Rank: #13706 (+722)
10K → 15K
23:10 | 7:28/mi
20K· 12.43 mi
1:34:15
Rank: #13312 (+394)
15K → 20K
23:22 | 7:32/mi
HALF· 13.11 mi
1:39:20
Rank: #13278 (+34)
20K → HALF
5:05 | 7:28/mi
25K· 15.53 mi
1:57:26
Rank: #12926 (+352)
HALF → 25K
18:06 | 7:28/mi
30K· 18.64 mi
2:21:03
Rank: #12443 (+483)
25K → 30K
23:37 | 7:37/mi
20M
2:31:11
Rank: #12151 (+292)
30K → 20M
10:08 | 7:28/mi
21M
2:38:53
Rank: #11878 (+273)
20M → 21M
7:42 | 7:42/mi
35K· 21.75 mi
2:44:23
Rank: #11761 (+117)
21M → 35K
5:30 | 7:22/mi
23M
2:53:30
Rank: #11440 (+321)
35K → 23M
9:07 | 7:18/mi
24M
3:00:31
Rank: #11169 (+271)
23M → 24M
7:01 | 7:01/mi
40K· 24.85 mi
3:06:33
Rank: #10906 (+263)
24M → 40K
6:02 | 7:04/mi
25.2M
3:09:09
Rank: #10789 (+117)
40K → 25.2M
2:36 | 7:33/mi
FINISH· 26.22 mi
3:16:10
Rank: #10609 (+180)
25.2M → FINISH
7:01 | 6:54/mi

The Course

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Half Splits

1st Half· via HALF
Distance13.11 mi
Time1:39:20
Pace7:35 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:50
Pace7:24 /mi
📊Negative Split: 2.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:05:4024:117:4824:11
7:48
-
10K
6.21 mi11:29:1247:437:4123:32
7:35
-0:13
15K
9.32 mi11:52:221:10:537:3723:10
7:28
-0:07
20K
12.43 mi12:15:441:34:157:3623:22
7:32
+0:04
HALF
13.11 mi12:20:491:39:207:355:05
7:28
-0:04
25K
15.53 mi12:38:551:57:267:3418:06
7:28
0:00
30K
18.64 mi13:02:322:21:037:3423:37
7:37
+0:09
20M
20.00 mi13:12:402:31:117:3410:08
7:28
-0:09
21M
21.00 mi13:20:222:38:537:347:42
7:42
+0:14
35K
21.75 mi13:25:522:44:237:345:30
7:22
-0:20
23M
23.00 mi13:34:592:53:307:339:07
7:18
-0:04
24M
24.00 mi13:42:003:00:317:327:01
7:01
-0:17
40K
24.85 mi13:48:023:06:337:316:02
7:04
+0:03
25.2M
25.20 mi13:50:383:09:097:312:36
7:33
+0:29
FINISH
26.22 mi13:57:393:16:107:307:01
6:54
-0:39

Checkpoints & Pacing

📈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

6:54 /mi

Average Pace

7:29 /mi

Slowest Pace

7:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:40

72% of race

Time at Steady Pace

55:30

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:05:4024:117:4824:11
7:48
#15275
10K
6.21 mi11:29:1247:437:4123:32
7:35
#14428
15K
9.32 mi11:52:221:10:537:3723:10
7:28
#13706
20K
12.43 mi12:15:441:34:157:3623:22
7:32
#13312
HALF
13.11 mi12:20:491:39:207:355:05
7:28
#13278
25K
15.53 mi12:38:551:57:267:3418:06
7:28
#12926
30K
18.64 mi13:02:322:21:037:3423:37
7:37
#12443
20M
20.00 mi13:12:402:31:117:3410:08
7:28
#12151
21M
21.00 mi13:20:222:38:537:347:42
7:42
#11878
35K
21.75 mi13:25:522:44:237:345:30
7:22
#11761
23M
23.00 mi13:34:592:53:307:339:07
7:18
#11440
24M
24.00 mi13:42:003:00:317:327:01
7:01
#11169
40K
24.85 mi13:48:023:06:337:316:02
7:04
#10906
25.2M
25.20 mi13:50:383:09:097:312:36
7:33
#10789
FINISH
26.22 mi13:57:393:16:107:307:01
6:54
#10609
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi152754853485312448(Top 43%)3258(Top 26%)3258(Top 57%)
10K6.21 mi3.10 mi14428+8474349+5044349+50413618(Top 47%)3889(Top 31%)3889(Top 68%)
15K9.32 mi3.11 mi13706+7223937+4123937+41212448(Top 43%)3258(Top 26%)3258(Top 57%)
20K12.43 mi3.11 mi13312+3943750+1873750+18712165(Top 42%)3194(Top 25%)3194(Top 56%)
HALF13.11 mi0.68 mi13278+343733+173733+1712649(Top 44%)3367(Top 27%)3367(Top 59%)
25K15.53 mi2.42 mi12926+3523554+1793554+17911132(Top 38%)2702(Top 21%)2702(Top 47%)
30K18.64 mi3.11 mi12443+4833329+2253329+22510461(Top 36%)2498(Top 20%)2498(Top 44%)
20M20.00 mi1.36 mi12151+2923187+1423187+1428883(Top 31%)1869(Top 15%)1869(Top 33%)
21M21.00 mi1.00 mi11878+2733049+1383049+1387880(Top 27%)1571(Top 12%)1571(Top 27%)
35K21.75 mi0.75 mi11761+1173003+463003+469782(Top 34%)2391(Top 19%)2391(Top 42%)
23M23.00 mi1.25 mi11440+3212853+1502853+1507408(Top 26%)1392(Top 11%)1392(Top 24%)
24M24.00 mi1.00 mi11169+2712745+1082745+1086631(Top 23%)1174(Top 9%)1174(Top 21%)
40K24.85 mi0.85 mi10906+2632640+1052640+1055894(Top 20%)968(Top 8%)968(Top 17%)
25.2M25.20 mi0.35 mi10789+1172588+522588+525615(Top 19%)957(Top 8%)957(Top 17%)
FINISH26.22 mi1.02 mi10609+1802526+622526+626743(Top 23%)1384(Top 11%)1384(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

12448

Females

3258

F18-39

3258

5K→10K

3.1 - 6.2 mi

Top 47%
×5stories
+79ft-138ft

Overall

13618

Females

3889

F18-39

3889

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

12448

Females

3258

F18-39

3258

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

12165

Females

3194

F18-39

3194

20K→HALF

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

12649

Females

3367

F18-39

3367

HALF→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

11132

Females

2702

F18-39

2702

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

10461

Females

2498

F18-39

2498

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8883

Females

1869

F18-39

1869

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7880

Females

1571

F18-39

1571

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9782

Females

2391

F18-39

2391

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7408

Females

1392

F18-39

1392

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6631

Females

1174

F18-39

1174

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5894

Females

968

F18-39

968

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5615

Females

957

F18-39

957

25.2M→FINISH

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6743

Females

1384

F18-39

1384

Passing Analysis

Category:
Athletes Passed
4826
Passed By
160
Net Change
+4666
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15275
5K → 10K90659+847#15275#14428
10K → 15K73614+722#14428#13706
15K → 20K41925+394#13706#13312
20K → HALF4915+34#13312#13278
HALF → 25K3608+352#13278#12926
25K → 30K49815+483#12926#12443
30K → 20M2931+292#12443#12151
20M → 21M2774+273#12151#11878
21M → 35K1269+117#11878#11761
35K → 23M3254+321#11761#11440
23M → 24M2721+271#11440#11169
24M → 40K2630+263#11169#10906
40K → 25.2M1170+117#10906#10789
25.2M → FINISH1855+180#10789#10609
TOTALS4826160+4666
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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OTQ

Olympic Trials Qualifying analysis available

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing