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BOSTON MARATHON 2025

Jenna Bullbrook

Bib: 19221•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 36%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:25
Rank: #12595
Start → 5K
7:32/mi
23:25 split
10K· 6.21 mi
46:17
Rank: #11691 (+904)
5K → 10K
7:22/mi
22:52 split
15K· 9.32 mi
1:09:18
Rank: #11410 (+281)
10K → 15K
7:25/mi
23:01 split
20K· 12.43 mi
1:32:30
Rank: #11160 (+250)
15K → 20K
7:28/mi
23:12 split
Half· 13.11 mi
1:37:38
Rank: #11209 (-49)
20K → Half
7:31/mi
5:08 split
25K· 15.53 mi
1:56:12
Rank: #11179 (+30)
Half → 25K
7:39/mi
18:34 split
30K· 18.64 mi
2:21:33
Rank: #11384 (-205)
25K → 30K
8:10/mi
25:21 split
20M
2:33:57
Rank: #11892 (-508)
30K → 20M
9:07/mi
12:24 split
21M
2:43:33
Rank: #12209 (-317)
20M → 21M
9:36/mi
9:36 split
35K· 21.75 mi
2:50:43
Rank: #12621 (-412)
21M → 35K
9:35/mi
7:10 split
23M
3:03:57
Rank: #13495 (-874)
35K → 23M
10:34/mi
13:14 split
24M
3:13:12
Rank: #13803 (-308)
23M → 24M
9:15/mi
9:15 split
40K· 24.85 mi
3:21:19
Rank: #14049 (-246)
24M → 40K
9:30/mi
8:07 split
25.2M
3:24:30
Rank: #14013 (+36)
40K → 25.2M
9:14/mi
3:11 split
Finish· 26.22 mi
3:33:46
Rank: #14230 (-217)
25.2M → Finish
9:06/mi
9:16 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:38
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:56:08
Pace8:52 /mi
📊Positive Split: 18.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3923:257:3223:25
7:32
-
10K
6.21 mi11:41:3146:177:2722:52
7:22
-0:10
15K
9.32 mi12:04:321:09:187:2623:01
7:25
+0:03
20K
12.43 mi12:27:441:32:307:2723:12
7:28
+0:03
Half
13.11 mi12:32:521:37:387:275:08
7:31
+0:03
25K
15.53 mi12:51:261:56:127:2918:34
7:39
+0:08
30K
18.64 mi13:16:472:21:337:3625:21
8:10
+0:31
20M
20.00 mi13:29:112:33:577:4212:24
9:07
+0:57
21M
21.00 mi13:38:472:43:337:479:36
9:36
+0:29
35K
21.75 mi13:45:572:50:437:517:10
9:35
-0:01
23M
23.00 mi13:59:113:03:578:0013:14
10:34
+0:59
24M
24.00 mi14:08:263:13:128:039:15
9:15
-1:19
40K
24.85 mi14:16:333:21:198:068:07
9:30
+0:15
25.2M
25.20 mi14:19:443:24:308:073:11
9:14
-0:16
Finish
26.22 mi14:29:003:33:468:109:16
9:06
-0:08

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

7:22 /mi

Average Pace

8:10 /mi

Slowest Pace

10:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:33

66% of race

Time at Steady Pace

58:59

28% of race

Time at Slower Pace

13:14

6% of race

Average Pace: 8:09 /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 mi11:18:3923:257:3223:25
7:32
#12595
10K
6.21 mi11:41:3146:177:2722:52
7:22
#11691
15K
9.32 mi12:04:321:09:187:2623:01
7:25
#11410
20K
12.43 mi12:27:441:32:307:2723:12
7:28
#11160
Half
13.11 mi12:32:521:37:387:275:08
7:31
#11209
25K
15.53 mi12:51:261:56:127:2918:34
7:39
#11179
30K
18.64 mi13:16:472:21:337:3625:21
8:10
#11384
20M
20.00 mi13:29:112:33:577:4212:24
9:07
#11892
21M
21.00 mi13:38:472:43:337:479:36
9:36
#12209
35K
21.75 mi13:45:572:50:437:517:10
9:35
#12621
23M
23.00 mi13:59:113:03:578:0013:14
10:34
#13495
24M
24.00 mi14:08:263:13:128:039:15
9:15
#13803
40K
24.85 mi14:16:333:21:198:068:07
9:30
#14049
25.2M
25.20 mi14:19:443:24:308:073:11
9:14
#14013
Finish
26.22 mi14:29:003:33:468:109:16
9:06
#14230
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125953114311410970(Top 39%)2364(Top 19%)2364(Top 43%)
10K6.21 mi3.10 mi11691+9042646+4682646+46810850(Top 38%)2230(Top 18%)2230(Top 41%)
15K9.32 mi3.11 mi11410+2812535+1112535+11110970(Top 39%)2364(Top 19%)2364(Top 43%)
20K12.43 mi3.11 mi11160+2502432+1032432+10310508(Top 37%)2219(Top 18%)2219(Top 41%)
Half13.11 mi0.68 mi11209-492459-272459-2712036(Top 42%)2986(Top 24%)2986(Top 55%)
25K15.53 mi2.42 mi11179+302485-262485-2611236(Top 40%)2712(Top 22%)2712(Top 50%)
30K18.64 mi3.11 mi11384-2052666-1812666-18112536(Top 44%)3588(Top 29%)3588(Top 66%)
20M20.00 mi1.36 mi11892-5082974-3082974-30817436(Top 61%)6381(Top 52%)6381(Top 117%)
21M21.00 mi1.00 mi12209-3173189-2153189-21516555(Top 58%)6001(Top 49%)6001(Top 110%)
35K21.75 mi0.75 mi12621-4123431-2423431-24220608(Top 73%)8290(Top 68%)8290(Top 152%)
23M23.00 mi1.25 mi13495-8743954-5233954-52322184(Top 78%)9159(Top 75%)9159(Top 167%)
24M24.00 mi1.00 mi13803-3084149-1954149-19518589(Top 65%)7330(Top 60%)7330(Top 134%)
40K24.85 mi0.85 mi14049-2464305-1564305-15618694(Top 66%)7470(Top 61%)7470(Top 137%)
25.2M25.20 mi0.35 mi14013+364295+104295+1013153(Top 46%)4572(Top 37%)4572(Top 84%)
Finish26.22 mi1.02 mi14230-2174438-1434438-14319499(Top 69%)7857(Top 64%)7857(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10970

Females

2364

F18-39

2364

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10850

Females

2230

F18-39

2230

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10970

Females

2364

F18-39

2364

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

10508

Females

2219

F18-39

2219

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

12036

Females

2986

F18-39

2986

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

11236

Females

2712

F18-39

2712

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

12536

Females

3588

F18-39

3588

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

17436

Females

6381

F18-39

6381

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16555

Females

6001

F18-39

6001

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20608

Females

8290

F18-39

8290

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22184

Females

9159

F18-39

9159

23M→24M

23.0 - 24.0 mi

Top 65%
×6stories
+12ft-82ft

Overall

18589

Females

7330

F18-39

7330

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18694

Females

7470

F18-39

7470

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13153

Females

4572

F18-39

4572

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

19499

Females

7857

F18-39

7857

Passing Analysis

Category:
Athletes Passed
2221
Passed By
3856
Net Change
-1635
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12595
5K → 10K94036+904#12595#11691
10K → 15K34362+281#11691#11410
15K → 20K31363+250#11410#11160
20K → Half2271-49#11160#11209
Half → 25K179149+30#11209#11179
25K → 30K165370-205#11179#11384
30K → 20M39547-508#11384#11892
20M → 21M46363-317#11892#12209
21M → 35K18430-412#12209#12621
35K → 23M14888-874#12621#13495
23M → 24M28336-308#13495#13803
24M → 40K29275-246#13803#14049
40K → 25.2M5721+36#14049#14013
25.2M → Finish28245-217#14013#14230
TOTALS22213856-1635
📊

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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing