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BOSTON MARATHON 2026

Stefanie Bong

Bib: 18009•F

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0:00
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 44%
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
24:09
3.11 mi
Rank: #15201
Start → 5K
24:09 | 7:47/mi
10K
48:05
6.21 mi
Rank: #14962 (+239)
5K → 10K
23:56 | 7:43/mi
15K
1:12:07
9.32 mi
Rank: #14871 (+91)
10K → 15K
24:02 | 7:45/mi
20K
1:36:33
12.43 mi
Rank: #14904 (-33)
15K → 20K
24:26 | 7:52/mi
HALF
1:41:49
13.11 mi
Rank: #14900 (+4)
20K → HALF
5:16 | 7:44/mi
25K
2:00:56
15.53 mi
Rank: #14815 (+85)
HALF → 25K
19:07 | 7:53/mi
30K
2:27:13
18.64 mi
Rank: #15170 (-355)
25K → 30K
26:17 | 8:28/mi
20M
2:39:07
20.00 mi
Rank: #15391 (-221)
30K → 20M
11:54 | 8:46/mi
21M
2:48:14
21.00 mi
Rank: #15451 (-60)
20M → 21M
9:07 | 9:07/mi
35K
2:54:29
21.75 mi
Rank: #15487 (-36)
21M → 35K
6:15 | 8:22/mi
23M
3:05:26
23.00 mi
Rank: #15592 (-105)
35K → 23M
10:57 | 8:45/mi
24M
3:14:03
24.00 mi
Rank: #15688 (-96)
23M → 24M
8:37 | 8:37/mi
40K
3:21:42
24.85 mi
Rank: #15780 (-92)
24M → 40K
7:39 | 8:57/mi
25.2M
3:25:05
25.20 mi
Rank: #15828 (-48)
40K → 25.2M
3:23 | 9:49/mi
FINISH
3:34:11
26.22 mi
Rank: #16005 (-177)
25.2M → FINISH
9:06 | 8:56/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:41:49
Pace7:47 /mi
2nd Half
Distance13.11 mi
Time1:52:22
Pace8:35 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:06:3924:097:4724:09
7:47
-
10K
6.21 mi11:30:3548:057:4523:56
7:43
-0:04
15K
9.32 mi11:54:371:12:077:4524:02
7:45
+0:02
20K
12.43 mi12:19:031:36:337:4724:26
7:52
+0:07
HALF
13.11 mi12:24:191:41:497:475:16
7:44
-0:08
25K
15.53 mi12:43:262:00:567:4819:07
7:53
+0:09
30K
18.64 mi13:09:432:27:137:5426:17
8:28
+0:35
20M
20.00 mi13:21:372:39:077:5811:54
8:46
+0:18
21M
21.00 mi13:30:442:48:148:019:07
9:07
+0:21
35K
21.75 mi13:36:592:54:298:026:15
8:22
-0:45
23M
23.00 mi13:47:563:05:268:0410:57
8:45
+0:23
24M
24.00 mi13:56:333:14:038:068:37
8:37
-0:08
40K
24.85 mi14:04:123:21:428:077:39
8:57
+0:20
25.2M
25.20 mi14:07:353:25:058:093:23
9:49
+0:52
FINISH
26.22 mi14:16:413:34:118:119:06
8:56
-0:53

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

7:43 /mi

Average Pace

8:10 /mi

Slowest Pace

9:49 /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

2:00:56

56% of race

Time at Steady Pace

1:04:00

30% of race

Time at Slower Pace

29:15

14% of race

Average Pace: 8:10 /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 mi11:06:3924:097:4724:09
7:47
#15201
10K
6.21 mi11:30:3548:057:4523:56
7:43
#14962
15K
9.32 mi11:54:371:12:077:4524:02
7:45
#14871
20K
12.43 mi12:19:031:36:337:4724:26
7:52
#14904
HALF
13.11 mi12:24:191:41:497:475:16
7:44
#14900
25K
15.53 mi12:43:262:00:567:4819:07
7:53
#14815
30K
18.64 mi13:09:432:27:137:5426:17
8:28
#15170
20M
20.00 mi13:21:372:39:077:5811:54
8:46
#15391
21M
21.00 mi13:30:442:48:148:019:07
9:07
#15451
35K
21.75 mi13:36:592:54:298:026:15
8:22
#15487
23M
23.00 mi13:47:563:05:268:0410:57
8:45
#15592
24M
24.00 mi13:56:333:14:038:068:37
8:37
#15688
40K
24.85 mi14:04:123:21:428:077:39
8:57
#15780
25.2M
25.20 mi14:07:353:25:058:093:23
9:49
#15828
FINISH
26.22 mi14:16:413:34:118:119:06
8:56
#16005
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 mi152014815481514835(Top 51%)4642(Top 37%)4642(Top 81%)
10K6.21 mi3.10 mi14962+2394689+1264689+12614820(Top 51%)4587(Top 36%)4587(Top 80%)
15K9.32 mi3.11 mi14871+914653+364653+3614835(Top 51%)4642(Top 37%)4642(Top 81%)
20K12.43 mi3.11 mi14904-334687-344687-3415062(Top 52%)4833(Top 38%)4833(Top 85%)
HALF13.11 mi0.68 mi14900+44682+54682+515051(Top 52%)4772(Top 38%)4772(Top 83%)
25K15.53 mi2.42 mi14815+854641+414641+4114498(Top 50%)4578(Top 36%)4578(Top 80%)
30K18.64 mi3.11 mi15170-3554905-2644905-26416654(Top 57%)5904(Top 47%)5904(Top 103%)
20M20.00 mi1.36 mi15391-2215057-1525057-15217751(Top 61%)6604(Top 53%)6604(Top 116%)
21M21.00 mi1.00 mi15451-605119-625119-6216763(Top 58%)6109(Top 49%)6109(Top 107%)
35K21.75 mi0.75 mi15487-365155-365155-3616781(Top 58%)6192(Top 49%)6192(Top 108%)
23M23.00 mi1.25 mi15592-1055241-865241-8617195(Top 59%)6527(Top 52%)6527(Top 114%)
24M24.00 mi1.00 mi15688-965313-725313-7217588(Top 61%)6777(Top 54%)6777(Top 119%)
40K24.85 mi0.85 mi15780-925387-745387-7418142(Top 63%)7112(Top 57%)7112(Top 124%)
25.2M25.20 mi0.35 mi15828-485429-425429-4218684(Top 64%)7372(Top 59%)7372(Top 129%)
FINISH26.22 mi1.02 mi16005-1775553-1245553-12420225(Top 70%)8189(Top 65%)8189(Top 143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21
+97ft-345ft

Overall

14835

Females

4642

F18-39

4642

5K→10K

3.1 - 6.2 mi

Top 51%
×5
+79ft-138ft

Overall

14820

Females

4587

F18-39

4587

10K→15K

6.2 - 9.3 mi

Top 51%
×3
+67ft-78ft

Overall

14835

Females

4642

F18-39

4642

15K→20K

9.3 - 12.4 mi

Top 52%
×5
+106ft-86ft

Overall

15062

Females

4833

F18-39

4833

20K→HALF

12.4 - 13.1 mi

Top 52%
×2
+19ft-37ft

Overall

15051

Females

4772

F18-39

4772

HALF→25K

13.1 - 15.5 mi

Top 50%
×4
+66ft-88ft

Overall

14498

Females

4578

F18-39

4578

25K→30K

15.5 - 18.6 mi

Top 57%
×9
+181ft-148ft

Overall

16654

Females

5904

F18-39

5904

30K→20M

18.6 - 20.0 mi

Top 61%
×5
+64ft-50ft

Overall

17751

Females

6604

F18-39

6604

20M→21M

20.0 - 21.0 mi

Top 58%
×8
+106ft-24ft

Overall

16763

Females

6109

F18-39

6109

21M→35K

21.0 - 21.8 mi

Top 58%
×7
+17ft-86ft

Overall

16781

Females

6192

F18-39

6192

35K→23M

21.8 - 23.0 mi

Top 59%
×5
+23ft-63ft

Overall

17195

Females

6527

F18-39

6527

23M→24M

23.0 - 24.0 mi

Top 61%
×6
+12ft-82ft

Overall

17588

Females

6777

F18-39

6777

24M→40K

24.0 - 24.9 mi

Top 63%
×1
+6ft-20ft

Overall

18142

Females

7112

F18-39

7112

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1
+13ft-16ft

Overall

18684

Females

7372

F18-39

7372

25.2M→FINISH

25.2 - 26.2 mi

Top 70%
×2
+22ft-21ft

Overall

20225

Females

8189

F18-39

8189

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1551
Passed By
2355
Net Change
-804
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15201
5K → 10K423184+239#15201#14962
10K → 15K253162+91#14962#14871
15K → 20K174207-33#14871#14904
20K → HALF3531+4#14904#14900
HALF → 25K18095+85#14900#14815
25K → 30K108463-355#14815#15170
30K → 20M59280-221#15170#15391
20M → 21M84144-60#15391#15451
21M → 35K5490-36#15451#15487
35K → 23M64169-105#15487#15592
23M → 24M36132-96#15592#15688
24M → 40K43135-92#15688#15780
40K → 25.2M1563-48#15780#15828
25.2M → FINISH23200-177#15828#16005
TOTALS15512355-804

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📊

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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing