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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Erin Tolfo

Bib: 16797 •F •Age: N/A

BC

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 35%
Gender (Female)
#0 / 12578
Top 19%
Masters (Masters Women)
#0 / 6862
Top 6%
Age Group (F40-44)
#0 / 1737
Top 14%
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
23:07
3.11 mi
Rank: #12286
Start → 5K
23:07 | 7:27/mi
10K
45:39
6.21 mi
Rank: #11501 (+785)
5K → 10K
22:32 | 7:16/mi
15K
1:08:24
9.32 mi
Rank: #11391 (+110)
10K → 15K
22:45 | 7:20/mi
20K
1:31:19
12.43 mi
Rank: #11263 (+128)
15K → 20K
22:55 | 7:23/mi
HALF
1:36:14
13.11 mi
Rank: #11227 (+36)
20K → HALF
4:55 | 7:13/mi
25K
1:54:11
15.53 mi
Rank: #11094 (+133)
HALF → 25K
17:57 | 7:25/mi
30K
2:17:26
18.64 mi
Rank: #10729 (+365)
25K → 30K
23:15 | 7:30/mi
20M
2:27:43
20.00 mi
Rank: #10628 (+101)
30K → 20M
10:17 | 7:35/mi
21M
2:35:40
21.00 mi
Rank: #10526 (+102)
20M → 21M
7:57 | 7:57/mi
35K
2:41:14
21.75 mi
Rank: #10506 (+20)
21M → 35K
5:34 | 7:27/mi
23M
2:50:46
23.00 mi
Rank: #10410 (+96)
35K → 23M
9:32 | 7:38/mi
24M
2:58:20
24.00 mi
Rank: #10394 (+16)
23M → 24M
7:34 | 7:34/mi
40K
3:05:03
24.85 mi
Rank: #10404 (-10)
24M → 40K
6:43 | 7:52/mi
25.2M
3:07:50
25.20 mi
Rank: #10359 (+45)
40K → 25.2M
2:47 | 8:05/mi
FINISH
3:15:05
26.22 mi
Rank: #10261 (+98)
25.2M → FINISH
7:15 | 7:07/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
Time1:36:14
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:38:51
Pace7:33 /mi
📊Positive Split: 2.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:04:3123:077:2723:07
7:27
-
10K
6.21 mi11:27:0345:397:2122:32
7:16
-0:11
15K
9.32 mi11:49:481:08:247:2122:45
7:20
+0:04
20K
12.43 mi12:12:431:31:197:2122:55
7:23
+0:03
HALF
13.11 mi12:17:381:36:147:214:55
7:13
-0:10
25K
15.53 mi12:35:351:54:117:2217:57
7:25
+0:12
30K
18.64 mi12:58:502:17:267:2323:15
7:30
+0:05
20M
20.00 mi13:09:072:27:437:2410:17
7:35
+0:05
21M
21.00 mi13:17:042:35:407:257:57
7:57
+0:22
35K
21.75 mi13:22:382:41:147:255:34
7:27
-0:30
23M
23.00 mi13:32:102:50:467:269:32
7:38
+0:11
24M
24.00 mi13:39:442:58:207:267:34
7:34
-0:04
40K
24.85 mi13:46:273:05:037:276:43
7:52
+0:18
25.2M
25.20 mi13:49:143:07:507:282:47
8:05
+0:13
FINISH
26.22 mi13:56:293:15:057:277:15
7:07
-0:58

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

7:07 /mi

Average Pace

7:27 /mi

Slowest Pace

8:05 /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

2:57:38

91% of race

Time at Steady Pace

17:27

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi11:04:3123:077:2723:07
7:27
#12286
10K
6.21 mi11:27:0345:397:2122:32
7:16
#11501
15K
9.32 mi11:49:481:08:247:2122:45
7:20
#11391
20K
12.43 mi12:12:431:31:197:2122:55
7:23
#11263
HALF
13.11 mi12:17:381:36:147:214:55
7:13
#11227
25K
15.53 mi12:35:351:54:117:2217:57
7:25
#11094
30K
18.64 mi12:58:502:17:267:2323:15
7:30
#10729
20M
20.00 mi13:09:072:27:437:2410:17
7:35
#10628
21M
21.00 mi13:17:042:35:407:257:57
7:57
#10526
35K
21.75 mi13:22:382:41:147:255:34
7:27
#10506
23M
23.00 mi13:32:102:50:467:269:32
7:38
#10410
24M
24.00 mi13:39:442:58:207:267:34
7:34
#10394
40K
24.85 mi13:46:273:05:037:276:43
7:52
#10404
25.2M
25.20 mi13:49:143:07:507:282:47
8:05
#10359
FINISH
26.22 mi13:56:293:15:057:277:15
7:07
#10261
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi122863083308311278(Top 39%)2625(Top 21%)2625(Top 151%)
10K6.21 mi3.10 mi11501+7852666+4172666+41710730(Top 37%)2269(Top 18%)2269(Top 131%)
15K9.32 mi3.11 mi11391+1102636+302636+3011278(Top 39%)2625(Top 21%)2625(Top 151%)
20K12.43 mi3.11 mi11263+1282599+372599+3710918(Top 38%)2534(Top 20%)2534(Top 146%)
HALF13.11 mi0.68 mi11227+362589+102589+1010477(Top 36%)2233(Top 18%)2233(Top 129%)
25K15.53 mi2.42 mi11094+1332541+482541+4810593(Top 37%)2427(Top 19%)2427(Top 140%)
30K18.64 mi3.11 mi10729+3652409+1322409+1329560(Top 33%)2078(Top 17%)2078(Top 120%)
20M20.00 mi1.36 mi10628+1012386+232386+239635(Top 33%)2215(Top 18%)2215(Top 128%)
21M21.00 mi1.00 mi10526+1022355+312355+319578(Top 33%)2297(Top 18%)2297(Top 132%)
35K21.75 mi0.75 mi10506+202364-92364-910423(Top 36%)2685(Top 21%)2685(Top 155%)
23M23.00 mi1.25 mi10410+962355+92355+99737(Top 34%)2467(Top 20%)2467(Top 142%)
24M24.00 mi1.00 mi10394+162373-182373-1810633(Top 37%)2975(Top 24%)2975(Top 171%)
40K24.85 mi0.85 mi10404-102393-202393-2011464(Top 40%)3487(Top 28%)3487(Top 201%)
25.2M25.20 mi0.35 mi10359+452387+62387+68869(Top 31%)2293(Top 18%)2293(Top 132%)
FINISH26.22 mi1.02 mi10261+982358+292358+298501(Top 29%)2153(Top 17%)2153(Top 124%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21
+97ft-345ft

Overall

11278

Females

2625

F40-44

2625

5K→10K

3.1 - 6.2 mi

Top 37%
×5
+79ft-138ft

Overall

10730

Females

2269

F40-44

2269

10K→15K

6.2 - 9.3 mi

Top 39%
×3
+67ft-78ft

Overall

11278

Females

2625

F40-44

2625

15K→20K

9.3 - 12.4 mi

Top 38%
×5
+106ft-86ft

Overall

10918

Females

2534

F40-44

2534

20K→HALF

12.4 - 13.1 mi

Top 36%
×2
+19ft-37ft

Overall

10477

Females

2233

F40-44

2233

HALF→25K

13.1 - 15.5 mi

Top 37%
×4
+66ft-88ft

Overall

10593

Females

2427

F40-44

2427

25K→30K

15.5 - 18.6 mi

Top 33%
×9
+181ft-148ft

Overall

9560

Females

2078

F40-44

2078

30K→20M

18.6 - 20.0 mi

Top 33%
×5
+64ft-50ft

Overall

9635

Females

2215

F40-44

2215

20M→21M

20.0 - 21.0 mi

Top 33%
×8
+106ft-24ft

Overall

9578

Females

2297

F40-44

2297

21M→35K

21.0 - 21.8 mi

Top 36%
×7
+17ft-86ft

Overall

10423

Females

2685

F40-44

2685

35K→23M

21.8 - 23.0 mi

Top 34%
×5
+23ft-63ft

Overall

9737

Females

2467

F40-44

2467

23M→24M

23.0 - 24.0 mi

Top 37%
×6
+12ft-82ft

Overall

10633

Females

2975

F40-44

2975

24M→40K

24.0 - 24.9 mi

Top 40%
×1
+6ft-20ft

Overall

11464

Females

3487

F40-44

3487

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1
+13ft-16ft

Overall

8869

Females

2293

F40-44

2293

25.2M→FINISH

25.2 - 26.2 mi

Top 29%
×2
+22ft-21ft

Overall

8501

Females

2153

F40-44

2153

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2773*
Passed By
748
Net Change
+2025
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12286
5K → 10K836*51+785#12286#11501
10K → 15K247*137+110#11501#11391
15K → 20K214*86+128#11391#11263
20K → HALF459+36#11263#11227
HALF → 25K18956+133#11227#11094
25K → 30K409*44+365#11094#10729
30K → 20M13938+101#10729#10628
20M → 21M15048+102#10628#10526
21M → 35K5838+20#10526#10506
35K → 23M15256+96#10506#10410
23M → 24M8670+16#10410#10394
24M → 40K6676-10#10394#10404
40K → 25.2M5712+45#10404#10359
25.2M → FINISH12527+98#10359#10261
TOTALS2773*748+2025

* 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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Activity Data

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