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BOSTON MARATHON 2026

Erin Spencer

Bib: 21944 •F •Age: N/A

CA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 44%
Masters (Masters Women)
#0 / 6862
Top 30%
Age Group (F45-49)
#0 / 1786
Top 36%
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
25:29
3.11 mi
Rank: #18235
Start → 5K
25:29 | 8:13/mi
10K
50:10
6.21 mi
Rank: #17613 (+622)
5K → 10K
24:41 | 7:57/mi
15K
1:15:21
9.32 mi
Rank: #17666 (-53)
10K → 15K
25:11 | 8:07/mi
20K
1:39:58
12.43 mi
Rank: #17130 (+536)
15K → 20K
24:37 | 7:56/mi
HALF
1:45:21
13.11 mi
Rank: #17091 (+39)
20K → HALF
5:23 | 7:54/mi
25K
2:04:54
15.53 mi
Rank: #16872 (+219)
HALF → 25K
19:33 | 8:04/mi
30K
2:30:59
18.64 mi
Rank: #16698 (+174)
25K → 30K
26:05 | 8:24/mi
20M
2:42:23
20.00 mi
Rank: #16602 (+96)
30K → 20M
11:24 | 8:24/mi
21M
2:51:09
21.00 mi
Rank: #16463 (+139)
20M → 21M
8:46 | 8:46/mi
35K
2:57:19
21.75 mi
Rank: #16420 (+43)
21M → 35K
6:10 | 8:15/mi
23M
3:07:41
23.00 mi
Rank: #16269 (+151)
35K → 23M
10:22 | 8:18/mi
24M
3:15:51
24.00 mi
Rank: #16183 (+86)
23M → 24M
8:10 | 8:10/mi
40K
3:22:56
24.85 mi
Rank: #16101 (+82)
24M → 40K
7:05 | 8:18/mi
25.2M
3:25:58
25.20 mi
Rank: #16050 (+51)
40K → 25.2M
3:02 | 8:48/mi
FINISH
3:34:00
26.22 mi
Rank: #15966 (+84)
25.2M → FINISH
8:02 | 7:53/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:45:21
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:48:39
Pace8:18 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:4325:298:1325:29
8:13
-
10K
6.21 mi11:51:2450:108:0524:41
7:57
-0:16
15K
9.32 mi12:16:351:15:218:0625:11
8:07
+0:10
20K
12.43 mi12:41:121:39:588:0324:37
7:56
-0:11
HALF
13.11 mi12:46:351:45:218:035:23
7:54
-0:02
25K
15.53 mi13:06:082:04:548:0319:33
8:04
+0:10
30K
18.64 mi13:32:132:30:598:0626:05
8:24
+0:20
20M
20.00 mi13:43:372:42:238:0811:24
8:24
0:00
21M
21.00 mi13:52:232:51:098:108:46
8:46
+0:22
35K
21.75 mi13:58:332:57:198:106:10
8:15
-0:31
23M
23.00 mi14:08:553:07:418:1010:22
8:18
+0:03
24M
24.00 mi14:17:053:15:518:108:10
8:10
-0:08
40K
24.85 mi14:24:103:22:568:107:05
8:18
+0:08
25.2M
25.20 mi14:27:123:25:588:113:02
8:48
+0:30
FINISH
26.22 mi14:35:143:34:008:118:02
7:53
-0:55

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

7:53 /mi

Average Pace

8:10 /mi

Slowest Pace

8:48 /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

3:22:12

94% of race

Time at Steady Pace

11:48

6% of race

Time at Slower Pace

0:00

0% 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 mi11:26:4325:298:1325:29
8:13
#18235
10K
6.21 mi11:51:2450:108:0524:41
7:57
#17613
15K
9.32 mi12:16:351:15:218:0625:11
8:07
#17666
20K
12.43 mi12:41:121:39:588:0324:37
7:56
#17130
HALF
13.11 mi12:46:351:45:218:035:23
7:54
#17091
25K
15.53 mi13:06:082:04:548:0319:33
8:04
#16872
30K
18.64 mi13:32:132:30:598:0626:05
8:24
#16698
20M
20.00 mi13:43:372:42:238:0811:24
8:24
#16602
21M
21.00 mi13:52:232:51:098:108:46
8:46
#16463
35K
21.75 mi13:58:332:57:198:106:10
8:15
#16420
23M
23.00 mi14:08:553:07:418:1010:22
8:18
#16269
24M
24.00 mi14:17:053:15:518:108:10
8:10
#16183
40K
24.85 mi14:24:103:22:568:107:05
8:18
#16101
25.2M
25.20 mi14:27:123:25:588:113:02
8:48
#16050
FINISH
26.22 mi14:35:143:34:008:118:02
7:53
#15966
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi182356638663817754(Top 61%)6335(Top 50%)6335(Top 355%)
10K6.21 mi3.10 mi17613+6226260+3786260+37816829(Top 58%)5815(Top 46%)5815(Top 326%)
15K9.32 mi3.11 mi17666-536301-416301-4117754(Top 61%)6335(Top 50%)6335(Top 355%)
20K12.43 mi3.11 mi17130+5366003+2986003+29815548(Top 54%)5117(Top 41%)5117(Top 287%)
HALF13.11 mi0.68 mi17091+395986+175986+1716388(Top 56%)5576(Top 44%)5576(Top 312%)
25K15.53 mi2.42 mi16872+2195861+1255861+12515886(Top 55%)5357(Top 43%)5357(Top 300%)
30K18.64 mi3.11 mi16698+1745808+535808+5316247(Top 56%)5660(Top 45%)5660(Top 317%)
20M20.00 mi1.36 mi16602+965765+435765+4315540(Top 54%)5382(Top 43%)5382(Top 301%)
21M21.00 mi1.00 mi16463+1395699+665699+6614808(Top 51%)5040(Top 40%)5040(Top 282%)
35K21.75 mi0.75 mi16420+435684+155684+1516121(Top 56%)5820(Top 46%)5820(Top 326%)
23M23.00 mi1.25 mi16269+1515631+535631+5314383(Top 50%)4929(Top 39%)4929(Top 276%)
24M24.00 mi1.00 mi16183+865598+335598+3314885(Top 51%)5274(Top 42%)5274(Top 295%)
40K24.85 mi0.85 mi16101+825575+235575+2314388(Top 50%)5106(Top 41%)5106(Top 286%)
25.2M25.20 mi0.35 mi16050+515556+195556+1913603(Top 47%)4698(Top 37%)4698(Top 263%)
FINISH26.22 mi1.02 mi15966+845526+305526+3014400(Top 50%)5132(Top 41%)5132(Top 287%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21
+97ft-345ft

Overall

17754

Females

6335

F45-49

6335

5K→10K

3.1 - 6.2 mi

Top 58%
×5
+79ft-138ft

Overall

16829

Females

5815

F45-49

5815

10K→15K

6.2 - 9.3 mi

Top 61%
×3
+67ft-78ft

Overall

17754

Females

6335

F45-49

6335

15K→20K

9.3 - 12.4 mi

Top 54%
×5
+106ft-86ft

Overall

15548

Females

5117

F45-49

5117

20K→HALF

12.4 - 13.1 mi

Top 56%
×2
+19ft-37ft

Overall

16388

Females

5576

F45-49

5576

HALF→25K

13.1 - 15.5 mi

Top 55%
×4
+66ft-88ft

Overall

15886

Females

5357

F45-49

5357

25K→30K

15.5 - 18.6 mi

Top 56%
×9
+181ft-148ft

Overall

16247

Females

5660

F45-49

5660

30K→20M

18.6 - 20.0 mi

Top 54%
×5
+64ft-50ft

Overall

15540

Females

5382

F45-49

5382

20M→21M

20.0 - 21.0 mi

Top 51%
×8
+106ft-24ft

Overall

14808

Females

5040

F45-49

5040

21M→35K

21.0 - 21.8 mi

Top 56%
×7
+17ft-86ft

Overall

16121

Females

5820

F45-49

5820

35K→23M

21.8 - 23.0 mi

Top 50%
×5
+23ft-63ft

Overall

14383

Females

4929

F45-49

4929

23M→24M

23.0 - 24.0 mi

Top 51%
×6
+12ft-82ft

Overall

14885

Females

5274

F45-49

5274

24M→40K

24.0 - 24.9 mi

Top 50%
×1
+6ft-20ft

Overall

14388

Females

5106

F45-49

5106

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1
+13ft-16ft

Overall

13603

Females

4698

F45-49

4698

25.2M→FINISH

25.2 - 26.2 mi

Top 50%
×2
+22ft-21ft

Overall

14400

Females

5132

F45-49

5132

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2951*
Passed By
670
Net Change
+2269
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18235
5K → 10K707*85+622#18235#17613
10K → 15K159200-53#17613#17666
15K → 20K545*9+536#17666#17130
20K → HALF5617+39#17130#17091
HALF → 25K259*40+219#17091#16872
25K → 30K279*105+174#16872#16698
30K → 20M13135+96#16698#16602
20M → 21M16930+139#16602#16463
21M → 35K8340+43#16463#16420
35K → 23M18231+151#16420#16269
23M → 24M10923+86#16269#16183
24M → 40K10826+82#16183#16101
40K → 25.2M565+51#16101#16050
25.2M → FINISH10824+84#16050#15966
TOTALS2951*670+2269

* 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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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing