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JD
Jack Diffendarfer
MalePennsylvania2016–2026
7
Total Finishes
4
Different Races
1
States (2%)
1:30:19
PR (6:54/mi)
1:35:15
Average
+0:05:40
Slower (first to last)
Medal House
2026
Coastal Delaware Running Festival
1:35:59
#49 overall
2025
Coastal Delaware Running Festival
1:32:21
#31 overall
2025
Coastal Delaware Running Festival
1:32:21
#31 overall#28 gender
2024
Strasburg Half Marathon & 5K
1:41:06
#1 overall
2019
Turkey Hill Country Classic
1:34:30
#10 overall#9 gender
2017
Turkey Hill Country Classic
1:40:12
#22 overall#16 gender
2016
Turkey Hill Country Classic
1:30:19
#8 overall#8 gender
Performance Timeline
Complete Race Log
| Year | Race | State | Time | Place |
|---|---|---|---|---|
| 2026 | Coastal Delaware Running FestivalRehoboth Beach | DE | 1:35:59 | #49 |
| 2025 | Coastal Delaware Running FestivalRehoboth Beach | DE | 1:32:21 | #31 |
| 2025 | Coastal Delaware Running FestivalDewey Beach | DE | 1:32:21 | #31 |
| 2024 | Strasburg Half Marathon & 5KStrasburg | PA | 1:41:06 | #1 |
| 2019 | Turkey Hill Country ClassicLancaster | PA | 1:34:30 | #10 |
| 2017 | Turkey Hill Country ClassicLancaster | PA | 1:40:12 | #22 |
| 2016 | Turkey Hill Country ClassicLancaster | PA | 1:30:19 | #8 |
States Raced
1 race 2 races 3-4 races 5+ races
State Breakdown
PAPennsylvania
4 races50-State Challenge
1/ 51 states + DC
50 states to go