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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Iona Buffum

Bib: 33496 •F •Age: N/A

RI

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
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
34:17
3.11 mi
Rank: #28064
Start → 5K
34:17 | 11:03/mi
10K
1:08:15
6.21 mi
Rank: #27865 (+199)
5K → 10K
33:58 | 10:56/mi
15K
1:43:15
9.32 mi
Rank: #27822 (+43)
10K → 15K
35:00 | 11:16/mi
20K
2:17:27
12.43 mi
Rank: #27609 (+213)
15K → 20K
34:12 | 11:01/mi
HALF
2:24:32
13.11 mi
Rank: #27552 (+57)
20K → HALF
7:05 | 10:24/mi
25K
2:52:40
15.53 mi
Rank: #27463 (+89)
HALF → 25K
28:08 | 11:37/mi
30K
3:32:46
18.64 mi
Rank: #27544 (-81)
25K → 30K
40:06 | 12:55/mi
20M
3:48:37
20.00 mi
Rank: #27446 (+98)
30K → 20M
15:51 | 11:41/mi
21M
4:00:07
21.00 mi
Rank: #27314 (+132)
20M → 21M
11:30 | 11:30/mi
35K
4:08:11
21.75 mi
Rank: #27244 (+70)
21M → 35K
8:04 | 10:47/mi
23M
4:21:09
23.00 mi
Rank: #27093 (+151)
35K → 23M
12:58 | 10:22/mi
24M
4:30:54
24.00 mi
Rank: #26959 (+134)
23M → 24M
9:45 | 9:45/mi
40K
4:41:14
24.85 mi
Rank: #26940 (+19)
24M → 40K
10:20 | 12:06/mi
25.2M
4:44:41
25.20 mi
Rank: #26878 (+62)
40K → 25.2M
3:27 | 10:01/mi
FINISH
4:53:07
26.22 mi
Rank: #26674 (+204)
25.2M → FINISH
8:26 | 8:17/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:24:32
Pace11:02 /mi
2nd Half
Distance13.11 mi
Time2:28:35
Pace11:21 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:04:5934:1711:0334:17
11:03
-
10K
6.21 mi12:38:571:08:1511:0033:58
10:56
-0:07
15K
9.32 mi13:13:571:43:1511:0535:00
11:16
+0:20
20K
12.43 mi13:48:092:17:2711:0434:12
11:01
-0:15
HALF
13.11 mi13:55:142:24:3211:027:05
10:24
-0:37
25K
15.53 mi14:23:222:52:4011:0728:08
11:37
+1:13
30K
18.64 mi15:03:283:32:4611:2540:06
12:55
+1:18
20M
20.00 mi15:19:193:48:3711:2615:51
11:41
-1:14
21M
21.00 mi15:30:494:00:0711:2711:30
11:30
-0:11
35K
21.75 mi15:38:534:08:1111:258:04
10:47
-0:43
23M
23.00 mi15:51:514:21:0911:2212:58
10:22
-0:25
24M
24.00 mi16:01:364:30:5411:189:45
9:45
-0:37
40K
24.85 mi16:11:564:41:1411:1910:20
12:06
+2:21
25.2M
25.20 mi16:15:234:44:4111:183:27
10:01
-2:05
FINISH
26.22 mi16:23:494:53:0711:128:26
8:17
-1:44

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

8:17 /mi

Average Pace

11:11 /mi

Slowest Pace

12:55 /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

41:41

14% of race

Time at Steady Pace

2:37:01

54% of race

Time at Slower Pace

1:34:25

32% of race

Average Pace: 11:11 /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 mi12:04:5934:1711:0334:17
11:03
#28064
10K
6.21 mi12:38:571:08:1511:0033:58
10:56
#27865
15K
9.32 mi13:13:571:43:1511:0535:00
11:16
#27822
20K
12.43 mi13:48:092:17:2711:0434:12
11:01
#27609
HALF
13.11 mi13:55:142:24:3211:027:05
10:24
#27552
25K
15.53 mi14:23:222:52:4011:0728:08
11:37
#27463
30K
18.64 mi15:03:283:32:4611:2540:06
12:55
#27544
20M
20.00 mi15:19:193:48:3711:2615:51
11:41
#27446
21M
21.00 mi15:30:494:00:0711:2711:30
11:30
#27314
35K
21.75 mi15:38:534:08:1111:258:04
10:47
#27244
23M
23.00 mi15:51:514:21:0911:2212:58
10:22
#27093
24M
24.00 mi16:01:364:30:5411:189:45
9:45
#26959
40K
24.85 mi16:11:564:41:1411:1910:20
12:06
#26940
25.2M
25.20 mi16:15:234:44:4111:183:27
10:01
#26878
FINISH
26.22 mi16:23:494:53:0711:128:26
8:17
#26674
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 mi28064119251192527731(Top 96%)11748(Top 93%)11748(Top 206%)
10K6.21 mi3.10 mi27865+19911804+12111804+12127592(Top 95%)11654(Top 93%)11654(Top 204%)
15K9.32 mi3.11 mi27822+4311781+2311781+2327731(Top 96%)11748(Top 93%)11748(Top 206%)
20K12.43 mi3.11 mi27609+21311662+11911662+11926971(Top 93%)11293(Top 90%)11293(Top 198%)
HALF13.11 mi0.68 mi27552+5711631+3111631+3126476(Top 91%)11046(Top 88%)11046(Top 193%)
25K15.53 mi2.42 mi27463+8911582+4911582+4927133(Top 93%)11444(Top 91%)11444(Top 200%)
30K18.64 mi3.11 mi27544-8111661-7911661-7927643(Top 95%)11799(Top 94%)11799(Top 206%)
20M20.00 mi1.36 mi27446+9811609+5211609+5225948(Top 89%)10954(Top 87%)10954(Top 192%)
21M21.00 mi1.00 mi27314+13211539+7011539+7024203(Top 83%)10105(Top 80%)10105(Top 177%)
35K21.75 mi0.75 mi27244+7011497+4211497+4224876(Top 86%)10459(Top 83%)10459(Top 183%)
23M23.00 mi1.25 mi27093+15111423+7411423+7423055(Top 79%)9548(Top 76%)9548(Top 167%)
24M24.00 mi1.00 mi26959+13411353+7011353+7022125(Top 76%)9115(Top 72%)9115(Top 159%)
40K24.85 mi0.85 mi26940+1911348+511348+526034(Top 90%)11161(Top 89%)11161(Top 195%)
25.2M25.20 mi0.35 mi26878+6211315+3311315+3319518(Top 67%)7851(Top 62%)7851(Top 137%)
FINISH26.22 mi1.02 mi26674+20411221+9411221+9416939(Top 58%)6489(Top 52%)6489(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21
+97ft-345ft

Overall

27731

Females

11748

F18-39

11748

5K→10K

3.1 - 6.2 mi

Top 95%
×5
+79ft-138ft

Overall

27592

Females

11654

F18-39

11654

10K→15K

6.2 - 9.3 mi

Top 96%
×3
+67ft-78ft

Overall

27731

Females

11748

F18-39

11748

15K→20K

9.3 - 12.4 mi

Top 93%
×5
+106ft-86ft

Overall

26971

Females

11293

F18-39

11293

20K→HALF

12.4 - 13.1 mi

Top 91%
×2
+19ft-37ft

Overall

26476

Females

11046

F18-39

11046

HALF→25K

13.1 - 15.5 mi

Top 93%
×4
+66ft-88ft

Overall

27133

Females

11444

F18-39

11444

25K→30K

15.5 - 18.6 mi

Top 95%
×9
+181ft-148ft

Overall

27643

Females

11799

F18-39

11799

30K→20M

18.6 - 20.0 mi

Top 89%
×5
+64ft-50ft

Overall

25948

Females

10954

F18-39

10954

20M→21M

20.0 - 21.0 mi

Top 83%
×8
+106ft-24ft

Overall

24203

Females

10105

F18-39

10105

21M→35K

21.0 - 21.8 mi

Top 86%
×7
+17ft-86ft

Overall

24876

Females

10459

F18-39

10459

35K→23M

21.8 - 23.0 mi

Top 79%
×5
+23ft-63ft

Overall

23055

Females

9548

F18-39

9548

23M→24M

23.0 - 24.0 mi

Top 76%
×6
+12ft-82ft

Overall

22125

Females

9115

F18-39

9115

24M→40K

24.0 - 24.9 mi

Top 90%
×1
+6ft-20ft

Overall

26034

Females

11161

F18-39

11161

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1
+13ft-16ft

Overall

19518

Females

7851

F18-39

7851

25.2M→FINISH

25.2 - 26.2 mi

Top 58%
×2
+22ft-21ft

Overall

16939

Females

6489

F18-39

6489

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1714*
Passed By
324
Net Change
+1390
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28064
5K → 10K249*50+199#28064#27865
10K → 15K12077+43#27865#27822
15K → 20K226*13+213#27822#27609
20K → HALF603+57#27609#27552
HALF → 25K11728+89#27552#27463
25K → 30K51132-81#27463#27544
30K → 20M1024+98#27544#27446
20M → 21M1320+132#27446#27314
21M → 35K711+70#27314#27244
35K → 23M1510+151#27244#27093
23M → 24M1340+134#27093#26959
24M → 40K3415+19#26959#26940
40K → 25.2M631+62#26940#26878
25.2M → FINISH204*0+204#26878#26674
TOTALS1714*324+1390

* 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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